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弱點

Weak Encryption: User-Controlled Key Size

Abstract
請勿向使用金鑰大小參數的加密函數傳遞受感染的金鑰大小值。
Explanation
允許使用者控制的值決定金鑰大小，可能會允許攻擊者指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1. 資料透過一個不可信賴的來源進入程式

2. 使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後在執行加密的同時，資料用作金鑰大小值的全部或一部分。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1. 攻擊者可能使用此弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。通過該方式，嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2. 攻擊者可能操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零大小的加密金鑰 (或盡可能小)，這可能會導致攻擊者讀取其他使用者的加密資料 (一旦攻擊者瞭解到所使用的加密演算法)。

範例 1：以下程式碼會使用使用者控制的金鑰大小參數執行 RSA 加密：

    ...
    RSACryptoServiceProvider rsa1 = new RSACryptoServiceProvider(Convert.ToInt32(tx.Text));
    ...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均能夠透過修改文字方塊值 tx.Text 操縱用於加密演算法的金鑰大小參數。程式發佈後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手，因為很難知道惡意使用者是否已判斷出指定加密作業的金鑰大小。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.dotnet.weak_encryption_user_controlled_key_size
Abstract
使用金鑰大小的加密函數可能會接收受感染的金鑰大小值。
Explanation
藉由允許使用者控制的值決定金鑰大小，攻擊者可能會指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1.資料透過一個不可信賴的來源進入程式

2.使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後將該資料用作金鑰大小值的全部或一部分來執行加密。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1.攻擊者可以使用該弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。然後嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2.攻擊者可操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零加密金鑰大小 (或另一個極低的數字)，可能會讓攻擊者讀取其他使用者的加密資料 (在攻擊者已瞭解使用的加密演算法後)。

範例 1：以下程式碼使用使用者控制的衍生金鑰長度產生 RSA 金鑰：

...
rsa.GenerateKey(random, user_input)
...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均能夠操縱加密演算法的金鑰長度參數，因為變數 user_input 可由使用者控制。發佈軟體後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手。想知道惡意使用者是否已控制指定加密作業的金鑰大小，難如登天。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.golang.weak_encryption_user_controlled_key_size
Abstract
請勿向使用金鑰大小參數的加密函數傳遞受感染的金鑰大小值。
Explanation
允許使用者控制的值決定金鑰大小，可能會允許攻擊者指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1. 資料透過一個不可信賴的來源進入程式

2. 使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後在執行加密的同時，將該資料用作金鑰大小值的全部或一部分。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1.攻擊者可能使用此弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。通過該方式，嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2.攻擊者可能操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零大小的加密金鑰 (或盡可能小)，這可能會導致攻擊者讀取其他使用者的加密資料 (一旦攻擊者瞭解到所使用的加密演算法)。

範例 1：以下程式碼會使用使用者控制的金鑰大小參數執行 AES 加密：

...
Properties prop = new Properties();
prop.load(new FileInputStream("config.properties"));
String keySize = prop.getProperty("keySize");
...
PBEKeySpec spec = new PBEKeySpec(
                password.toCharArray(),
                saltBytes,
                pswdIterations,
                Integer.parseInt(keySize)
                );
SecretKey secretKey = factory.generateSecret(spec);
SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");
...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均將能夠透過修改屬性 keySize 操縱用於加密演算法的金鑰大小參數。程式發佈後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手，因為很難知道惡意使用者是否已判斷出指定加密作業的金鑰大小。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.java.weak_encryption_user_controlled_key_size
Abstract
請勿向使用金鑰大小參數的加密函數傳遞受感染的金鑰大小值。
Explanation
允許使用者控制的值決定金鑰大小，可能會允許攻擊者指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1. 資料透過一個不可信賴的來源進入程式

2. 使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後在執行加密的同時，將該資料用作金鑰大小值的全部或一部分。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1.攻擊者可能使用此弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。通過該方式，嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2.攻擊者可能操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零大小的加密金鑰 (或盡可能小)，這可能會導致攻擊者讀取其他使用者的加密資料 (一旦攻擊者瞭解到所使用的加密演算法)。

範例 1：以下程式碼會使用使用者控制的金鑰大小參數執行 AES 加密：

...
@property (strong, nonatomic) IBOutlet UITextField *inputTextField;
...
CCCrypt(kCCEncrypt,
        kCCAlgorithmAES,
        kCCOptionPKCS7Padding,
        key,
        sizeof(_inputTextField.text),
        iv,
        plaintext,
        sizeof(plaintext),
        ciphertext,
        sizeof(ciphertext),
        &numBytesEncrypted);
...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均將能夠透過修改 UITextField inputTextField 中的文字操縱用於加密演算法的金鑰大小參數。程式發佈後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手，因為很難知道惡意使用者是否已判斷出指定加密作業的金鑰大小。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.objc.weak_encryption_user_controlled_key_size
Abstract
請勿向使用金鑰大小參數的加密函數傳遞受感染的金鑰大小值。
Explanation
允許使用者控制的值決定金鑰大小，可能會允許攻擊者指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1.資料透過一個不可信賴的來源進入程式

2.使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後在執行加密的同時，資料用作金鑰大小值的全部或一部分。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1.攻擊者可能使用此弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。透過該方式，嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2.攻擊者可能操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零大小的加密金鑰 (或盡可能小)，這可能會導致攻擊者讀取其他使用者的加密資料 (一旦攻擊者瞭解到所使用的加密演算法)。

範例 1：以下程式碼從密碼衍生金鑰，但使用由使用者控制的衍生金鑰長度：

...
$hash = hash_pbkdf2('sha256', $password, $random_salt, 100000, strlen($password));
...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均能夠操縱加密演算法的金鑰長度參數，因為變數 user_input 可由使用者控制。程式發佈後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手，因為很難知道惡意使用者是否已判斷出指定加密作業的金鑰大小。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.php.weak_encryption_user_controlled_key_size
Abstract
請勿向使用金鑰大小參數的加密函數傳遞受感染的金鑰大小值。
Explanation
允許使用者控制的值決定金鑰大小，可能會允許攻擊者指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1. 資料透過一個不可信賴的來源進入程式

2. 使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後在執行加密的同時，將該資料用作金鑰大小值的全部或一部分。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1.攻擊者可能使用此弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。通過該方式，嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2.攻擊者可能操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零大小的加密金鑰 (或盡可能小)，這可能會導致攻擊者讀取其他使用者的加密資料 (一旦攻擊者瞭解到所使用的加密演算法)。

範例 1：以下程式碼從密碼衍生金鑰，但使用由使用者控制的衍生金鑰長度：

...
dk = hashlib.pbkdf2_hmac('sha256', password, random_salt, 100000, dklen=user_input)
...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均能夠操縱加密演算法的金鑰長度參數，因為變數 user_input 可由使用者控制。程式發佈後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手，因為很難知道惡意使用者是否已判斷出指定加密作業的金鑰大小。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.python.weak_encryption_user_controlled_key_size
Abstract
請勿向使用金鑰大小參數的加密函數傳遞受感染的金鑰大小值。
Explanation
允許使用者控制的值決定金鑰大小，可能會允許攻擊者指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1. 資料透過一個不可信賴的來源進入程式

2. 使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後在執行加密的同時，將該資料用作金鑰大小值的全部或一部分。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1. 攻擊者可能使用此弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。通過該方式，嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2. 攻擊者可能操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零大小的加密金鑰 (或盡可能小)，這可能會導致攻擊者讀取其他使用者的加密資料 (一旦攻擊者瞭解到所使用的加密演算法)。

範例 1：以下程式碼從密碼衍生金鑰，但使用由使用者控制的衍生金鑰長度：

...
dk = OpenSSL::PKCS5.pbkdf2_hmac(password, random_salt, 100000, user_input, digest)
...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均能夠操縱加密演算法的金鑰長度參數，因為變數 user_input 可由使用者控制。程式發佈後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手，因為很難知道惡意使用者是否已判斷出指定加密作業的金鑰大小。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.ruby.weak_encryption_user_controlled_key_size
Abstract
請勿向使用金鑰大小參數的加密函數傳遞受感染的金鑰大小值。
Explanation
允許使用者控制的值決定金鑰大小，可能會允許攻擊者指定空白金鑰，從而讓解密已使用空白金鑰加密的任何資料變得相對容易。即使需要使用非零值，攻擊者仍可以指定可能的最低值，這會降低加密的安全性。

安全性較低的加密：使用者控制的金鑰大小問題會在以下情況中發生：

1. 資料透過一個不可信賴的來源進入程式

2. 使用者控制的資料包含在金鑰大小參數內，或全部用作加密函數內的金鑰大小參數。

如同許多軟體的安全性弱點一樣，安全性較低的加密：使用者控制的金鑰大小是達到目的的一種手段，而不是一個目的。此弱點的基礎很簡單：攻擊者將惡意資料傳遞到應用程式，然後在執行加密的同時，資料用作金鑰大小值的全部或一部分。

具有使用者控制的金鑰大小的問題便是它會導致各種攻擊：

1. 攻擊者可能使用此弱點為加密作業 (包含攻擊者可存取的任何資料) 指定一個零金鑰大小。通過該方式，嘗試將許多不同的演算法與空白金鑰搭配使用來解密自己的資料，以洩漏應用程式內使用的加密實作相關的資訊將非常容易。這可能會透過允許攻擊者僅關注破解工作期間的特定演算法，讓解密其他使用者的加密資料變得更容易。
2. 攻擊者可能操縱其他使用者的加密金鑰大小，或誘騙其他使用者使用零大小的加密金鑰 (或盡可能小)，這可能會導致攻擊者讀取其他使用者的加密資料 (一旦攻擊者瞭解到所使用的加密演算法)。

範例 1：以下程式碼會使用使用者控制的金鑰大小參數執行 AES 加密：

...
@IBOutlet weak var inputTextField : UITextField!
...
let key = (inputTextField.text as NSString).dataUsingEncoding(NSUTF8StringEncoding)
let keyPointer = UnsafePointer<UInt8>(key.bytes)
let keyLength = size_t(key.length)
...
let operation : CCOperation = UInt32(kCCEncrypt)
let algoritm : CCAlgorithm = UInt32(kCCAlgorithmAES128)
let options : CCOptions = UInt32(kCCOptionPKCS7Padding)
var numBytesEncrypted :size_t = 0
CCCrypt(operation,
        algorithm,
        options,
        keyPointer,
        keyLength,
        iv,
        plaintextPointer,
        plaintextLength,
        ciphertextPointer,
        ciphertextLength,
        &numBytesEncrypted)
...
Example 1 中的程式碼將成功執行，但可取得此功能的任何人均將能夠透過修改 UITextField inputTextField 中的文字操縱用於加密演算法的金鑰大小參數。程式發佈後，想要復原與使用者控制的金鑰大小相關的問題便會相當棘手，因為很難知道惡意使用者是否已判斷出指定加密作業的金鑰大小。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 326
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002450
[3] Standards Mapping - FIPS200 MP
[4] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 AU-10 Non-Repudiation (P2), SC-12 Cryptographic Key Establishment and Management (P1), SC-13 Cryptographic Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 AU-10 Non-Repudiation, SC-12 Cryptographic Key Establishment and Management, SC-13 Cryptographic Protection
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 2.8.3 Single or Multi Factor One Time Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 6.2.3 Algorithms (L2 L3), 6.2.4 Algorithms (L2 L3), 6.2.5 Algorithms (L2 L3), 6.2.6 Algorithms (L2 L3), 9.1.2 Communications Security Requirements (L1 L2 L3), 9.1.3 Communications Security Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M6 Broken Cryptography
[9] Standards Mapping - OWASP Mobile 2024 M10 Insufficient Cryptography
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CRYPTO-1
[11] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A7 Insecure Cryptographic Storage
[14] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure
[15] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure
[16] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.6.1, Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.6.1, Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.6.1, Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.6.1, Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.6.1, Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.6.1, Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.6.1, Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.6.1, Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.6.1, Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.2 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000590 CAT II, APSC-DV-002010 CAT II, APSC-DV-002040 CAT II
desc.dataflow.swift.weak_encryption_user_controlled_key_size

WSE Misconfiguration: Insufficient Encryption

Abstract
簽章不加密會增加遭受暴力攻擊的機會。
Explanation
MessageProtectionOrder 屬性可讓您指定套用簽章及加密的順 (以及是否將簽章加密)。將 MessageProtectionOrder 屬性設定為 SignBeforeEncryptAndEncryptSignature 以外的類型可能會構成安全性問題。

以下清單為 SignBeforeEncryptAndEncryptSignature 的可能替代方案以及相關聯的問題。
SignBeforeEncrypt - 簽章套用在未加密的訊息，但是簽章本身無加密。
EncryptBeforeSign - 訊息內容已加密並完成簽署。

以低複雜性金鑰 (例如密碼) 簽署的訊息會更容易受到暴力攻擊。
References
[1] MessageProtectionOrder Enumeration Microsoft
[2] Standards Mapping - Common Weakness Enumeration CWE ID 311
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000068, CCI-002418, CCI-002420, CCI-002421, CCI-002422
[4] Standards Mapping - FIPS200 CM
[5] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-17 Remote Access (P1), SC-8 Transmission Confidentiality and Integrity (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-17 Remote Access, SC-8 Transmission Confidentiality and Integrity
[8] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 2.6.3 Look-up Secret Verifier Requirements (L2 L3), 6.2.1 Algorithms (L1 L2 L3), 8.1.6 General Data Protection (L3)
[10] Standards Mapping - OWASP Mobile 2014 M3 Insufficient Transport Layer Protection
[11] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management
[12] Standards Mapping - OWASP Top 10 2007 A8 Insecure Cryptographic Storage
[13] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration
[14] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration
[15] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration
[16] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.10
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.3, Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.3
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.3
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.3
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.3
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.3
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 7.1 - Use of Cryptography
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design
[29] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 311
[30] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 311
[31] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3150.1 CAT II, APP3260.1 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3150.1 CAT II, APP3260 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3150.1 CAT II, APP3260 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3150.1 CAT II, APP3260 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3150.1 CAT II, APP3260 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3150.1 CAT II, APP3260 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3150.1 CAT II, APP3260 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000260 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[54] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Transport Layer Protection (WASC-04)
[55] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage
desc.config.dotnet.wse_misconfiguration_insufficient_encryption

WSE Misconfiguration: Missing Authorization

Abstract
沒有明確設定 <authorization> 標籤可能造成權限擴大或匿名存取的問題。
Explanation
<authorization> 元素會指定一個授權規則的清單。如果存在一個 <authorization> 元素，且沒有可套用於傳送者的規則，則拒絕存取[1]。
在此案例中，已識別的組態設定檔案中不存在 <authorization> 標籤，可能會發生匿名存取。
References
[1] Element Microsoft
[2] Standards Mapping - Common Weakness Enumeration CWE ID 285
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-000804, CCI-002165
[4] Standards Mapping - FIPS200 CM
[5] Standards Mapping - General Data Protection Regulation (GDPR) Access Violation
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1), IA-8 Identification and Authentication (Non-Organizational Users) (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement, IA-8 Identification and Authentication (Non-Organizational Users)
[8] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 4.1.3 General Access Control Design (L1 L2 L3), 4.1.5 General Access Control Design (L1 L2 L3), 4.2.1 Operation Level Access Control (L1 L2 L3), 13.1.4 Generic Web Service Security Verification Requirements (L2 L3)
[10] Standards Mapping - OWASP Mobile 2014 M5 Poor Authorization and Authentication
[11] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management
[12] Standards Mapping - OWASP Top 10 2007 A10 Failure to Restrict URL Access
[13] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration
[14] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration
[15] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration
[16] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.10, Requirement 7.2
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.5.10, Requirement 7.2
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8, Requirement 7.2
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8, Requirement 7.2
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8, Requirement 7.2
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8, Requirement 7.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8, Requirement 7.2
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4, Requirement 7.3.2
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4, Requirement 7.3.2
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.4 - Authentication and Access Control
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.4 - Authentication and Access Control
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 5.4 - Authentication and Access Control, Control Objective C.2.3 - Web Software Access Controls
[29] Standards Mapping - SANS Top 25 2009 Porous Defenses - CWE ID 285
[30] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 285
[31] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3480.2 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3480.2 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3480.2 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3480.2 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3480.2 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3480.2 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3480.2 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[50] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[51] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[52] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[53] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II
[54] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Authorization (WASC-02)
[55] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authorization
desc.config.dotnet.wse_misconfiguration_missing_authorization

WSE Misconfiguration: Unsigned Fault Timestamp

Abstract
未簽署的時間戳記會讓 SOAP 訊息遭受纂改與重複進行的攻擊。
Explanation
安全性時間戳記可指示訊息建立的時間。若攻擊者截取稍後重新傳輸的訊息，接收者可拒絕重複進行的攻擊，因為時間戳記顯示這是舊訊息。或者，時間戳記可包含一個有效期屬性，您可以使用該屬性以限制安全語義的有效時間。

若要防止攻擊者纂改時間戳記，則時間戳記必須已完成簽署。如果時間戳記並未經過簽署，攻擊者可能會在接收者未察覺的狀況下攔截 SOAP 訊息、修改時間戳記並傳送該訊息。在這些情況下，攻擊者可能會誘使接收者接受惡意的訊息。

下列 WSE 政策檔案的片段為 SOAP 錯誤內未包含時間戳記的範例：

<policies>
...
      <protection>
        <fault signatureOptions="IncludeAddressing, IncludeSoapBody" encryptBody="true" />
References
[1] Element Microsoft
[2] Standards Mapping - Common Weakness Enumeration CWE ID 345
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001453, CCI-001941, CCI-001942, CCI-002418, CCI-002420, CCI-002421, CCI-002422
[4] Standards Mapping - FIPS200 CM
[5] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-17 Remote Access (P1), AU-10 Non-Repudiation (P2), IA-2 Identification and Authentication (Organizational Users) (P1), SC-8 Transmission Confidentiality and Integrity (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-17 Remote Access, AU-10 Non-Repudiation, IA-2 Identification and Authentication (Organizational Users), SC-8 Transmission Confidentiality and Integrity
[8] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 3.5.3 Token-based Session Management (L2 L3), 13.2.6 RESTful Web Service Verification Requirements (L2 L3)
[10] Standards Mapping - OWASP Mobile 2014 M3 Insufficient Transport Layer Protection
[11] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management
[12] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration
[13] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration
[14] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration
[15] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.10
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.4
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.4
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.4
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.4
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[23] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography
[24] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography, Control Objective C.4.1 - Web Software Communications
[26] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3260.1 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3860 CAT II, APP3260 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3860 CAT II, APP3260 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3860 CAT II, APP3260 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3860 CAT II, APP3260 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3860 CAT II, APP3260 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3860 CAT II, APP3260 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[49] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Transport Layer Protection (WASC-04)
desc.config.dotnet.wse_misconfiguration_unsigned_fault_timestamp

WSE Misconfiguration: Unsigned Request Timestamp

Abstract
未簽署的時間戳記會讓 SOAP 訊息遭受纂改與重複進行的攻擊。
Explanation
安全性時間戳記可指示訊息建立的時間。若攻擊者截取稍後重新傳輸的訊息，接收者可拒絕重複進行的攻擊，因為時間戳記顯示這是舊訊息。或者，時間戳記可包含一個有效期屬性，您可以使用該屬性以限制安全語義的有效時間。

若要防止攻擊者纂改時間戳記，則時間戳記必須已完成簽署。如果時間戳記並未經過簽署，攻擊者可能會在接收者未察覺的狀況下攔截 SOAP 訊息、修改時間戳記並傳送該訊息。在這些情況下，攻擊者可能會誘使接收者接受惡意的訊息。

下列 WSE 政策檔案的片段為 SOAP 訊息要求內未包含時間戳記的範例：

<policies>
...
      <protection>
        <request signatureOptions="IncludeAddressing, IncludeSoapBody" encryptBody="true" />
References
[1] Element Microsoft
[2] Standards Mapping - Common Weakness Enumeration CWE ID 345
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001453, CCI-001941, CCI-001942, CCI-002418, CCI-002420, CCI-002421, CCI-002422
[4] Standards Mapping - FIPS200 CM
[5] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-17 Remote Access (P1), AU-10 Non-Repudiation (P2), IA-2 Identification and Authentication (Organizational Users) (P1), SC-8 Transmission Confidentiality and Integrity (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-17 Remote Access, AU-10 Non-Repudiation, IA-2 Identification and Authentication (Organizational Users), SC-8 Transmission Confidentiality and Integrity
[8] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 3.5.3 Token-based Session Management (L2 L3), 13.2.6 RESTful Web Service Verification Requirements (L2 L3)
[10] Standards Mapping - OWASP Mobile 2014 M3 Insufficient Transport Layer Protection
[11] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management
[12] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration
[13] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration
[14] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration
[15] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.10
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.4
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.4
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.4
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.4
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[23] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography
[24] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography, Control Objective C.4.1 - Web Software Communications
[26] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3260.1 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3860 CAT II, APP3260 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3860 CAT II, APP3260 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3860 CAT II, APP3260 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3860 CAT II, APP3260 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3860 CAT II, APP3260 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3860 CAT II, APP3260 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[49] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Transport Layer Protection (WASC-04)
desc.config.dotnet.wse_misconfiguration_unsigned_request_timestamp

WSE Misconfiguration: Unsigned Response Timestamp

Abstract
未簽署的時間戳記會讓 SOAP 訊息遭受纂改與重複進行的攻擊。
Explanation
安全性時間戳記可指示訊息建立的時間。若攻擊者截取稍後重新傳輸的訊息，接收者可拒絕重複進行的攻擊，因為時間戳記顯示這是舊訊息。或者，時間戳記可包含一個有效期屬性，您可以使用該屬性以限制安全語義的有效時間。

若要防止攻擊者纂改時間戳記，則時間戳記必須已完成簽署。如果時間戳記並未經過簽署，攻擊者可能會在接收者未察覺的狀況下攔截 SOAP 訊息、修改時間戳記並傳送該訊息。在這些情況下，攻擊者可能會誘使接收者接受惡意的訊息。

下列 WSE 政策檔案的片段為 SOAP 訊息回應內未包含時間戳記的範例：

<policies>
...
      <protection>
        <response signatureOptions="IncludeAddressing, IncludeSoapBody" encryptBody="true" />
References
[1] Element Microsoft
[2] Standards Mapping - Common Weakness Enumeration CWE ID 345
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001453, CCI-001941, CCI-001942, CCI-002418, CCI-002420, CCI-002421, CCI-002422
[4] Standards Mapping - FIPS200 CM
[5] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-17 Remote Access (P1), AU-10 Non-Repudiation (P2), IA-2 Identification and Authentication (Organizational Users) (P1), SC-8 Transmission Confidentiality and Integrity (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-17 Remote Access, AU-10 Non-Repudiation, IA-2 Identification and Authentication (Organizational Users), SC-8 Transmission Confidentiality and Integrity
[8] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration
[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 3.5.3 Token-based Session Management (L2 L3), 13.2.6 RESTful Web Service Verification Requirements (L2 L3)
[10] Standards Mapping - OWASP Mobile 2014 M3 Insufficient Transport Layer Protection
[11] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management
[12] Standards Mapping - OWASP Top 10 2010 A6 Security Misconfiguration
[13] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration
[14] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration
[15] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.10
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.4
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.4
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.4
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.4
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[23] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography
[24] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.3 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography, Control Objective C.4.1 - Web Software Communications
[26] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3260.1 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3860 CAT II, APP3260 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3860 CAT II, APP3260 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3860 CAT II, APP3260 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3860 CAT II, APP3260 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3860 CAT II, APP3260 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3860 CAT II, APP3260 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000180 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-000180 CAT II, APSC-DV-000590 CAT II, APSC-DV-001620 CAT II, APSC-DV-001630 CAT II, APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II
[49] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Transport Layer Protection (WASC-04)
desc.config.dotnet.wse_misconfiguration_unsigned_response_timestamp

XML Entity Expansion Injection

Abstract
若使用未配置為阻止或限制文件類型定義 (DTD) 實體解析的 XML 剖析器，可能會使剖析器暴露於 XML Entity Expansion Injection
Explanation
XML Entity Expansion Injection 也稱為 XML Bomb，屬於 DoS 攻擊，它可受益於格式正確的有效 XML 區塊，這些區塊呈指數級擴充，直到耗盡伺服器分配的資源。XML 允許您定義用做字串替換巨集的自訂實體。藉由巢狀循環實體解析，攻擊者可能很容易就讓伺服器資源損毀。

以下 XML 文件顯示 XML Bomb 的一個範例。

    <?xml version="1.0"?>
    <!DOCTYPE lolz [
      <!ENTITY lol "lol">
      <!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
      <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
      <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
      <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
      <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
      <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
      <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
      <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
    ]>
    <lolz>&lol9;</lolz>


此測試可以藉由將小型 XML 文件擴充到記憶體超過 3 GB，使伺服器當機。
References
[1] XML External Entity (XXE) Processing OWASP
[2] Testing for XML Injection OWASP
[3] XML External Entities The Web Application Security Consortium
[4] Standards Mapping - Common Weakness Enumeration CWE ID 776
[5] Standards Mapping - Common Weakness Enumeration Top 25 2024 [24] CWE ID 400
[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385
[7] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[8] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[9] Standards Mapping - OWASP API 2023 API4 Unrestricted Resource Consumption
[10] Standards Mapping - OWASP Application Security Verification Standard 4.0 12.1.2 File Upload Requirements (L2 L3)
[11] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[12] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[13] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[14] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[15] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2010 A1 Injection
[17] Standards Mapping - OWASP Top 10 2013 A1 Injection
[18] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[19] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[29] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[30] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[53] Standards Mapping - Web Application Security Consortium Version 2.00 XML Entity Expansion (WASC-44)
[54] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.dataflow.abap.xml_entity_expansion_injection
Abstract
若使用未設定為阻止或限制文件類型定義 (DTD) 實體解析的 XML 剖析器，可能會使剖析器暴露於 XML Entity Expansion Injection 攻擊
Explanation
XML 實體擴大注入攻擊是憑藉格式良好的有效 XML 區塊進行的 DoS 攻擊，這些區塊會不斷激增，直到耗盡伺服器分配的資源為止。XML 允許定義充當字串替代巨集的自訂實體。透過建立巢狀的循環實體解析，攻擊者可能輕鬆地導致伺服器資源當機。

以下 XML 文件顯示了 XML 炸彈的範例。

<?xml version="1.0"?>
<!DOCTYPE lolz [
  <!ENTITY lol "lol">
  <!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
  <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
  <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
  <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
  <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
  <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
  <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
  <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<lolz>&lol9;</lolz>


此測試將小型 XML 文件擴大至在記憶體中超過 3GB，從而導致伺服器當機。
References
[1] XML Denial of Service Attacks and Defenses MSDN Magazine
[2] XML External Entity (XXE) Processing OWASP
[3] Testing for XML Injection OWASP
[4] XML External Entities The Web Application Security Consortium
[5] Standards Mapping - Common Weakness Enumeration CWE ID 776
[6] Standards Mapping - Common Weakness Enumeration Top 25 2024 [24] CWE ID 400
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385
[8] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[9] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[10] Standards Mapping - OWASP API 2023 API4 Unrestricted Resource Consumption
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 12.1.2 File Upload Requirements (L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[20] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[29] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[31] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[54] Standards Mapping - Web Application Security Consortium Version 2.00 XML Entity Expansion (WASC-44)
[55] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.controlflow.dotnet.xml_entity_expansion_injection
Abstract
若使用未配置為阻止或限制文件類型定義 (DTD) 實體解析的 XML 剖析器，可能會使剖析器暴露於 XML Entity Expansion Injection
Explanation
XML Entity Expansion Injection 也稱為 XML Bombs，是憑藉形式良好的有效 XML 區塊進行的 Denial Of Service (DoS) 攻擊，這些區塊會不斷激增，直到耗盡伺服器配置的資源為止。XML 允許定義充當字串替代巨集的自訂實體。透過建立巢狀的循環實體解析，攻擊者可能輕鬆地導致伺服器資源當機。

以下 XML 文件顯示了 XML 炸彈的範例。

<?xml version="1.0"?>
<!DOCTYPE lolz [
  <!ENTITY lol "lol">
  <!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
  <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
  <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
  <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
  <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
  <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
  <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
  <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<lolz>&lol9;</lolz>


此測試將小型 XML 文件擴大至在記憶體中超過 3GB，從而導致伺服器當機。
References
[1] XML External Entity (XXE) Processing OWASP
[2] Testing for XML Injection OWASP
[3] XML External Entities The Web Application Security Consortium
[4] INJECT-5: Restrict XML inclusion Oracle
[5] Standards Mapping - Common Weakness Enumeration CWE ID 776
[6] Standards Mapping - Common Weakness Enumeration Top 25 2024 [24] CWE ID 400
[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385
[8] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[9] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[10] Standards Mapping - OWASP API 2023 API4 Unrestricted Resource Consumption
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 12.1.2 File Upload Requirements (L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[20] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[29] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[31] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[54] Standards Mapping - Web Application Security Consortium Version 2.00 XML Entity Expansion (WASC-44)
[55] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.controlflow.java.xee_injection
Abstract
若使用未配置為阻止或限制文件類型定義 (DTD) 實體解析的 XML 剖析器，可能會使剖析器暴露於 XML Entity Expansion Injection
Explanation
XML Entity Expansion Injection 也稱為 XML Bomb，屬於 DoS 攻擊，它可受益於格式正確的有效 XML 區塊，這些區塊呈指數級擴充，直到耗盡伺服器分配的資源。XML 允許您定義用做字串替換巨集的自訂實體。藉由巢狀循環實體解析，攻擊者可能很容易就讓伺服器資源損毀。

以下 XML 文件顯示 XML Bomb 的一個範例。

    <?xml version="1.0"?>
    <!DOCTYPE lolz [
      <!ENTITY lol "lol">
      <!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
      <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
      <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
      <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
      <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
      <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
      <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
      <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
    ]>
    <lolz>&lol9;</lolz>


此測試可以藉由將小型 XML 文件擴充到記憶體超過 3GB，使伺服器當機。
References
[1] XML External Entity (XXE) Processing OWASP
[2] Testing for XML Injection OWASP
[3] XML External Entities The Web Application Security Consortium
[4] Standards Mapping - Common Weakness Enumeration CWE ID 776
[5] Standards Mapping - Common Weakness Enumeration Top 25 2024 [24] CWE ID 400
[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385
[7] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[8] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[9] Standards Mapping - OWASP API 2023 API4 Unrestricted Resource Consumption
[10] Standards Mapping - OWASP Application Security Verification Standard 4.0 12.1.2 File Upload Requirements (L2 L3)
[11] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[12] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[13] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[14] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[15] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2010 A1 Injection
[17] Standards Mapping - OWASP Top 10 2013 A1 Injection
[18] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[19] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[29] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[30] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[53] Standards Mapping - Web Application Security Consortium Version 2.00 XML Entity Expansion (WASC-44)
[54] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.dataflow.php.xml_entity_expansion_injection
Abstract
若使用未配置為阻止或限制文件類型定義 (DTD) 實體解析的 XML 剖析器，可能會使剖析器暴露於 XML Entity Expansion Injection
Explanation
XML 實體擴大 injection 也稱為 XML 炸彈，是憑藉格式良好的有效 XML 區塊進行的 DoS 攻擊，這些區塊會不斷激增，直到耗盡伺服器分配的資源為止。XML 允許定義充當字串替代巨集的自訂實體。透過建立巢狀的循環實體解析，攻擊者可能輕鬆地導致伺服器資源當機。

以下 XML 文件顯示了 XML 炸彈的範例。

<?xml version="1.0"?>
<!DOCTYPE lolz [
  <!ENTITY lol "lol">
  <!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
  <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
  <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
  <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
  <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
  <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
  <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
  <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<lolz>&lol9;</lolz>


此測試將小型 XML 文件擴大至在記憶體中超過 3GB，從而導致伺服器當機。
References
[1] XML vulnerabilities
[2] Announcing defusedxml, Fixes for XML Security Issues
[3] defusedxml
[4] defusedexpat
[5] XML External Entity (XXE) Processing OWASP
[6] Testing for XML Injection OWASP
[7] XML External Entities The Web Application Security Consortium
[8] Standards Mapping - Common Weakness Enumeration CWE ID 776
[9] Standards Mapping - Common Weakness Enumeration Top 25 2024 [24] CWE ID 400
[10] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385
[11] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[12] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[13] Standards Mapping - OWASP API 2023 API4 Unrestricted Resource Consumption
[14] Standards Mapping - OWASP Application Security Verification Standard 4.0 12.1.2 File Upload Requirements (L2 L3)
[15] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[16] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[17] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[18] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[19] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[20] Standards Mapping - OWASP Top 10 2010 A1 Injection
[21] Standards Mapping - OWASP Top 10 2013 A1 Injection
[22] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[23] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[34] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[57] Standards Mapping - Web Application Security Consortium Version 2.00 XML Entity Expansion (WASC-44)
[58] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.dataflow.python.xee_injection
Abstract
若使用未配置為阻止或限制文件類型定義 (DTD) 實體解析的 XML 剖析器，可能會使剖析器暴露於 XML Entity Expansion Injection
Explanation
XML 實體擴大 injection 也稱為 XML 炸彈，是憑藉格式良好的有效 XML 區塊進行的 DoS 攻擊，這些區塊會不斷激增，直到耗盡伺服器分配的資源為止。XML 允許定義充當字串替代巨集的自訂實體。透過建立巢狀的循環實體解析，攻擊者可能輕鬆地導致伺服器資源當機。

以下 XML 文件顯示了 XML 炸彈的範例。

<?xml version="1.0"?>
<!DOCTYPE lolz [
  <!ENTITY lol "lol">
  <!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
  <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
  <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
  <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
  <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
  <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
  <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
  <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<lolz>&lol9;</lolz>


此測試將小型 XML 文件擴大至在記憶體中超過 3GB，從而導致伺服器當機。
References
[1] XML External Entity (XXE) Processing OWASP
[2] Testing for XML Injection OWASP
[3] XML External Entities The Web Application Security Consortium
[4] Standards Mapping - Common Weakness Enumeration CWE ID 776
[5] Standards Mapping - Common Weakness Enumeration Top 25 2024 [24] CWE ID 400
[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385
[7] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[8] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[9] Standards Mapping - OWASP API 2023 API4 Unrestricted Resource Consumption
[10] Standards Mapping - OWASP Application Security Verification Standard 4.0 12.1.2 File Upload Requirements (L2 L3)
[11] Standards Mapping - OWASP Mobile 2014 M1 Weak Server Side Controls
[12] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[13] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[14] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[15] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2010 A1 Injection
[17] Standards Mapping - OWASP Top 10 2013 A1 Injection
[18] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[19] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.9
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[29] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[30] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I
[53] Standards Mapping - Web Application Security Consortium Version 2.00 XML Entity Expansion (WASC-44)
[54] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.dataflow.ruby.xee_injection

XML External Entity Injection

Abstract
若使用的 XML 剖析器未設定為阻止或限制外部實體解析，可能會使剖析器暴露於 XML 外部實體攻擊
Explanation
XML 外部實體攻擊憑藉的是在處理時會動態建置文件這一 XML 功能。XML 實體允許動態納入指定資源的資料。外部實體允許 XML 文件納入外部 URI 的資料。除非另行設定，否則外部實體會強制 XML 剖析器存取由 URI 指定的資源，例如本機機器或遠端系統上的檔案。此行為會導致應用程式遭受 XML 外部實體 (XXE) 攻擊，進而導致本機系統的 denial of service、取得本機機器上檔案的未授權的存取權、掃描遠端機器，並執行遠端系統的 denial of service。

以下 ABAP 程式碼示範了不安全的 XML 剖析：

...
DATA(ixml) = cl_ixml=>create( ).
DATA(stream_factory) = ixml->create_stream_factory( ).
istream = stream_factory->create_istream_string(
  `<?xml version="1.0" encoding="UTF-8"?> ` &&
  `<!DOCTYPE foo [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]> ` &&
  `<stockCheck>&xxe;</stockCheck>` ).
istream->set_dtd_restriction( level = 0 ).
DATA(document) = ixml->create_document( ).
parser = ixml->create_parser(
                          stream_factory = stream_factory
                          istream        = istream
                          document       = document ).
parser->set_validating( mode = `0` ).
DATA(rc) = parser->parse( ).
...


若 XML 剖析器嘗試以檔案內容取代實體，則此範例可以洩漏 Linux 系統上「/etc/passwd」密碼檔案的內容。
References
[1] XML Denial of Service Attacks and Defenses MSDN Magazine
[2] XML External Entity (XXE) Processing OWASP
[3] Testing for XML Injection OWASP
[4] XML External Entities The Web Application Security Consortium
[5] Standards Mapping - Common Weakness Enumeration CWE ID 611
[6] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[7] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[8] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[9] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[10] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[11] Standards Mapping - FIPS200 SI
[12] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[13] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[14] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[15] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[16] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[17] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[18] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[19] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[20] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[21] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[22] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[23] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[24] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[25] Standards Mapping - OWASP Top 10 2010 A1 Injection
[26] Standards Mapping - OWASP Top 10 2013 A1 Injection
[27] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[28] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[34] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[35] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[36] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[37] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[38] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[39] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[40] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[41] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[63] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[64] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.dataflow.abap.xml_external_entity_injection
Abstract
若使用的 XML 剖析器未設定為阻止或限制外部實體解析，可能會使剖析器暴露於 XML 外部實體攻擊
Explanation
XML 外部實體攻擊憑藉的是在處理時會動態建置文件這一 XML 功能。XML 實體允許動態納入指定資源的資料。外部實體允許 XML 文件納入外部 URI 的資料。除非另行設定，否則外部實體會強制 XML 解析器存取由 URI 指定的資源，例如本機機器或遠端系統上的檔案。此行為會導致應用程式遭受 XML 外部實體 (XXE) 攻擊，可用於執行本機系統的服務阻絕、取得本機機器上檔案的未授權的存取權、掃描遠端機器，並執行遠端系統的服務阻絕。

以下 XML 文件顯示了 XXE 攻擊的範例。

<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
  <!ELEMENT foo ANY >
  <!ENTITY xxe SYSTEM "file:///c:/winnt/win.ini" >]><foo>&xxe;</foo>


在此範例中，若 XML 解析器嘗試以 C:\winnt\win.ini 系統檔案的內容取代實體，會導致洩漏該檔案的內容。
References
[1] XML Denial of Service Attacks and Defenses MSDN Magazine
[2] XML External Entity (XXE) Processing OWASP
[3] Testing for XML Injection OWASP
[4] XML External Entities The Web Application Security Consortium
[5] Standards Mapping - Common Weakness Enumeration CWE ID 611
[6] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[7] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[8] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[9] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[10] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[11] Standards Mapping - FIPS200 SI
[12] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[13] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[14] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[15] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[16] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[17] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[18] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[19] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[20] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[21] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[22] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[23] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[24] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[25] Standards Mapping - OWASP Top 10 2010 A1 Injection
[26] Standards Mapping - OWASP Top 10 2013 A1 Injection
[27] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[28] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[34] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[35] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[36] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[37] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[38] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[39] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[40] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[41] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[63] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[64] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.controlflow.dotnet.xml_external_entity_injection
Abstract
識別的方法允許外部實體參照。此呼叫可讓攻擊者將 XML 外部實體注入 XML 文件以顯示檔案內容或內部網路資源。
Explanation
XML External Entity (XXE) Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 該資料會寫入<ENTITY> XML 文件內 DTD (文件類型定義) 的元素。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況下，攻擊者可能會插入巢狀實體參照並造成 XML 解析器不斷大量消耗 CPU 資源。在較為惡意的 XML External Entity Injection 情況下，攻擊者可能會新增 XML 元素，以此來暴露本機檔案系統資源內容或顯示出存在的內部網路資源。

範例 1：此為易於受 XXE 攻擊的 Objective-C 程式碼：


- (void) parseSomeXML: (NSString *) rawXml {

    BOOL success;
    NSData *rawXmlConvToData = [rawXml dataUsingEncoding:NSUTF8StringEncoding];
    NSXMLParser *myParser = [[NSXMLParser alloc] initWithData:rawXmlConvToData];
    [myParser setShouldResolveExternalEntities:YES];
    [myParser setDelegate:self];
}


假設攻擊者能夠控制 rawXml 內容，使 XML 與下列相似：


 <?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
   <!ELEMENT foo ANY >
   <!ENTITY xxe SYSTEM "file:///c:/boot.ini" >]><foo>&xxe;</foo>


當 XML 受伺服器評估時，<foo> 元素會包含 boot.ini 檔案的內容。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 611
[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[5] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[7] Standards Mapping - FIPS200 SI
[8] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[11] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[12] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[13] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[14] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[15] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[16] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[17] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[18] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[19] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[20] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[21] Standards Mapping - OWASP Top 10 2010 A1 Injection
[22] Standards Mapping - OWASP Top 10 2013 A1 Injection
[23] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[24] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[35] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[36] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.semantic.cpp.xml_external_entity_injection
Abstract
若使用的 XML 剖析器未設定為阻止或限制外部實體解析，可能會使剖析器暴露於 XML 外部實體攻擊
Explanation
XML 外部實體攻擊憑藉的是在處理時會動態建置文件這一 XML 功能。XML 實體允許動態納入指定資源的資料。外部實體允許 XML 文件納入外部 URI 的資料。除非另行設定，否則外部實體會強制 XML 解析器存取由 URI 指定的資源，例如本機機器或遠端系統上的檔案。此行為會導致應用程式遭受 XML 外部實體 (XXE) 攻擊，可用於執行本機系統的服務阻絕、取得本機機器上檔案的未授權的存取權、掃描遠端機器，並執行遠端系統的服務阻絕。
範例 1：以下 XML 文件顯示了 XXE 攻擊的範例。

<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
  <!ELEMENT foo ANY >
  <!ENTITY xxe SYSTEM "file:///dev/random" >]><foo>&xxe;</foo>


在此範例中，若 XML 解析器嘗試以 /dev/random 檔案的內容取代實體，會導致伺服器當機 (在 UNIX 系統上)。

範例 2：以下 Java 程式碼說明如何利用 XML 剖析器來執行 XXE 攻擊。

String xml = "...";
...
try {
    SAXParserFactory factory = SAXParserFactory.newInstance();
    SAXParser saxParser = factory.newSAXParser();

    DefaultHandler handler = new DefaultHandler() {
        @Override
        public void characters(char[] ch, int start, int length) throws SAXException {
            System.out.println(new String(ch, start, length));
        }
    };

    saxParser.parse(new InputSource(new StringReader(xml)), handler);
} catch (Exception e) {
    e.printStackTrace();
}
...

在此範例中，Java 程式碼使用具有外部實體參照的 XML 字串。如果未正確設定以停用外部實體剖析，這可能會導致 UNIX 系統上的伺服器當機。
References
[1] XML External Entity (XXE) Processing OWASP
[2] Testing for XML Injection OWASP
[3] XML External Entities The Web Application Security Consortium
[4] IDS17-J. Prevent XML External Entity Attacks CERT
[5] DOS-1: Beware of activities that may use disproportionate resources Oracle
[6] INJECT-5: Restrict XML inclusion Oracle
[7] Standards Mapping - Common Weakness Enumeration CWE ID 611
[8] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[9] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[10] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[11] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[12] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[13] Standards Mapping - FIPS200 SI
[14] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[15] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[16] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[17] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[18] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[19] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[20] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[21] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[22] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[23] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[24] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[25] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[26] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[27] Standards Mapping - OWASP Top 10 2010 A1 Injection
[28] Standards Mapping - OWASP Top 10 2013 A1 Injection
[29] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[30] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[34] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[35] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[36] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[37] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[38] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[39] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[40] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[41] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[42] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[43] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[63] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[64] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[65] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[66] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.semantic.java.xxe_injection
Abstract
若使用的 XML 處理器不會阻止或限制外部實體解析，則會導致應用程式遭受 XML 外部實體攻擊。
Explanation
XML 外部實體攻擊憑藉的是在執行階段會動態建置文件這一 XML 功能。XML 實體允許動態納入指定資源的資料。外部實體允許 XML 文件納入外部 URI 的資料。除非另行配置，否則外部實體會強制 XML 剖析器存取由 URI 指定的資源，例如本機機器或遠端系統上的檔案。此行為會導致應用程式遭受 XML 外部實體 (XXE) 攻擊，攻擊者可使用這類攻擊執行本機系統的阻斷服務、取得本機機器上檔案的未授權的存取權、掃描遠端機器，並執行遠端系統的阻斷服務。


範例 1：以下 XML 文件顯示了 XXE 攻擊的範例。

<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
  <!ELEMENT foo ANY >
  <!ENTITY xxe SYSTEM "file:///dev/random" >]><foo>&xxe;</foo>


在此範例中，若 XML 剖析器嘗試以 /dev/random 檔案的內容取代實體，會導致伺服器當機 (在 UNIX 系統上)。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 611
[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[5] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[7] Standards Mapping - FIPS200 SI
[8] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[11] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[12] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[13] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[14] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[15] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[16] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[17] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[18] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[19] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[20] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[21] Standards Mapping - OWASP Top 10 2010 A1 Injection
[22] Standards Mapping - OWASP Top 10 2013 A1 Injection
[23] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[24] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[35] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[36] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.dataflow.javascript.xxe_injection
Abstract
識別的方法允許外部實體參照。此呼叫可讓攻擊者將 XML 外部實體注入 XML 文件以顯示檔案內容或內部網路資源。
Explanation
XML External Entity (XXE) Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 該資料寫入至 XML 文件內 DTD (文件類型定義) 的 <ENTITY> 元素。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況下，攻擊者可能會插入巢狀實體參照並造成 XML 解析器不斷大量消耗 CPU 資源。在較為惡意的 XML External Entity Injection 情況下，攻擊者可能會新增 XML 元素，以此來暴露本機檔案系統資源內容或顯示出存在的內部網路資源。

範例 1：此為易於受 XXE 攻擊的程式碼：


- (void) parseSomeXML: (NSString *) rawXml {

    BOOL success;
    NSData *rawXmlConvToData = [rawXml dataUsingEncoding:NSUTF8StringEncoding];
    NSXMLParser *myParser = [[NSXMLParser alloc] initWithData:rawXmlConvToData];
    [myParser setShouldResolveExternalEntities:YES];
    [myParser setDelegate:self];
}


假設攻擊者能夠控制 rawXml 內容，使 XML 與下列相似：


 <?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
   <!ELEMENT foo ANY >
   <!ENTITY xxe SYSTEM "file:///c:/boot.ini" >]><foo>&xxe;</foo>


當 XML 受伺服器評估時，<foo> 元素會包含 boot.ini 檔案的內容。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 611
[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[5] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[7] Standards Mapping - FIPS200 SI
[8] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[11] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[12] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[13] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[14] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[15] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[16] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[17] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[18] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[19] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[20] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[21] Standards Mapping - OWASP Top 10 2010 A1 Injection
[22] Standards Mapping - OWASP Top 10 2013 A1 Injection
[23] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[24] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[35] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[36] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.semantic.objc.xml_external_entity_injection
Abstract
處理未經驗證的 XML 文件，可讓攻擊者變更 XML 的結構和內容、從通訊埠掃描主機伺服器或從主機掃描內部網路、從檔案系統加入任意檔案或造成應用程式 Denial of Service。
Explanation
XML External Entity (XXE) Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況下，攻擊者可能會插入巢狀實體參照並造成 XML 解析器不斷大量消耗 CPU 資源。在較為惡意的 XML External Entity Injection 情況下，攻擊者可能會新增 XML 元素，以此來暴露本機檔案系統資源內容，顯示出存在的內部網路資源，或暴露後端內容本身。

範例 1：此為易於受 XXE 攻擊的程式碼：

假設攻擊者可以控制將 XML 輸入到下列程式碼：


...
<?php
$goodXML = $_GET["key"];
$doc = simplexml_load_string($goodXml);
echo $doc->testing;
?>
...


現在，假設攻擊者將下列 XML 傳遞到 Example 2 中的程式碼：



<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
   <!ELEMENT foo ANY >
   <!ENTITY xxe SYSTEM "file:///c:/boot.ini" >]><foo>&xxe;</foo>



處理 XML 時，<foo> 元素的內容會填入系統 boot.ini 檔案的內容。攻擊者可能利用傳回到用戶端的 XML 元素竊取資料或取得資訊，以便知道有哪些網路資源。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 611
[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[5] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[7] Standards Mapping - FIPS200 SI
[8] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[11] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[12] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[13] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[14] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[15] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[16] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[17] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[18] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[19] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[20] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[21] Standards Mapping - OWASP Top 10 2010 A1 Injection
[22] Standards Mapping - OWASP Top 10 2013 A1 Injection
[23] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[24] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[35] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[36] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.dataflow.php.xml_external_entity_injection
Abstract
若使用的 XML 處理器不會阻止或限制外部實體解析，則會導致應用程式遭受 XML 外部實體攻擊。
Explanation
XML 外部實體攻擊憑藉的是在執行階段會動態建置文件這一 XML 功能。XML 實體允許動態納入指定資源的資料。外部實體允許 XML 文件納入外部 URI 的資料。除非另行配置，否則外部實體會強制 XML 剖析器存取由 URI 指定的資源，例如本機機器或遠端系統上的檔案。此行為會導致應用程式遭受 XML 外部實體 (XXE) 攻擊，攻擊者可使用這類攻擊執行本機系統的阻斷服務、取得本機機器上檔案的未授權的存取權、掃描遠端機器，並執行遠端系統的阻斷服務。


範例 1：以下 XML 文件顯示了 XXE 攻擊的範例。

<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
  <!ELEMENT foo ANY >
  <!ENTITY xxe SYSTEM "file:///dev/random" >]><foo>&xxe;</foo>


在此範例中，若 XML 解析器嘗試以 /dev/random 檔案的內容取代實體，會導致伺服器當機 (在 UNIX 系統上)。
References
[1] XML vulnerabilities
[2] Announcing defusedxml, Fixes for XML Security Issues
[3] defusedxml
[4] defusedexpat
[5] XML External Entity (XXE) Processing OWASP
[6] Testing for XML Injection (OWASP-DV-008) OWASP
[7] XML External Entities The Web Application Security Consortium
[8] Standards Mapping - Common Weakness Enumeration CWE ID 611
[9] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[10] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[11] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[12] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[13] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[14] Standards Mapping - FIPS200 SI
[15] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[16] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[17] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[18] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[19] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[20] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[21] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[22] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[23] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[24] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[25] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[26] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[27] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[28] Standards Mapping - OWASP Top 10 2010 A1 Injection
[29] Standards Mapping - OWASP Top 10 2013 A1 Injection
[30] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[31] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[34] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[35] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[36] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[37] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[38] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[39] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[40] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[41] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[42] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[43] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[44] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[63] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[64] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[65] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[66] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[67] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.dataflow.python.xxe_injection
Abstract
若使用的 XML 剖析器未設定為阻止或限制外部實體解析，可能會使剖析器暴露於 XML 外部實體攻擊
Explanation
XML 外部實體攻擊憑藉的是在處理時會動態建置文件這一 XML 功能。XML 實體允許動態納入指定資源的資料。外部實體允許 XML 文件納入外部 URI 的資料。除非另行配置，否則外部實體會強制 XML 解析器存取由 URI 指定的資源，例如本機機器或遠端系統上的檔案。此行為會導致應用程式遭受 XML 外部實體 (XXE) 攻擊，可用於執行本機系統的阻斷服務、取得本機機器上檔案的未授權的存取權、掃描遠端機器，並執行遠端系統的阻斷服務。

以下 XML 文件顯示了 XXE 攻擊的範例。

<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
  <!ELEMENT foo ANY >
  <!ENTITY xxe SYSTEM "file:///etc/passwd" >]><foo>&xxe;</foo>


XML 範例文件將讀取 /etc/passwd 的內容並將其包含在文件中。

範例 1：以下程式碼使用不安全的 XML 解析器處理來自 HTTP 要求的不可信賴的輸入。 


def readFile() = Action { request =>
    val xml = request.cookies.get("doc")
    val doc = XMLLoader.loadString(xml)
    ...
}
References
[1] XML External Entity (XXE) Processing OWASP
[2] Testing for XML Injection OWASP
[3] XML External Entities The Web Application Security Consortium
[4] IDS17-J. Prevent XML External Entity Attacks CERT
[5] DOS-1: Beware of activities that may use disproportionate resources Oracle
[6] INJECT-5: Restrict XML inclusion Oracle
[7] Standards Mapping - Common Weakness Enumeration CWE ID 611
[8] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[9] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[10] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[11] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[12] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[13] Standards Mapping - FIPS200 SI
[14] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[15] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[16] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[17] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[18] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[19] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[20] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[21] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[22] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[23] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[24] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[25] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[26] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[27] Standards Mapping - OWASP Top 10 2010 A1 Injection
[28] Standards Mapping - OWASP Top 10 2013 A1 Injection
[29] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[30] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[34] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[35] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[36] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[37] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[38] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[39] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[40] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[41] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[42] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[43] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[63] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[64] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[65] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[66] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.dataflow.scala.xml_external_entity_injection
Abstract
識別的方法允許外部實體參照。此呼叫可讓攻擊者將 XML 外部實體注入 XML 文件以顯示檔案內容或內部網路資源。
Explanation
XML External Entity (XXE) Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 該資料寫入至 XML 文件內 DTD (文件類型定義) 的 <ENTITY> 元素。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況下，攻擊者可能會插入巢狀實體參照並造成 XML 解析器不斷大量消耗 CPU 資源。在較為惡意的 XML External Entity Injection 情況下，攻擊者可能會新增 XML 元素，以此來暴露本機檔案系統資源內容或顯示出存在的內部網路資源。

範例 1：此為易於受 XXE 攻擊的程式碼：


func parseXML(xml: String) {
    parser = NSXMLParser(data: rawXml.dataUsingEncoding(NSUTF8StringEncoding)!)
    parser.delegate = self
    parser.shouldResolveExternalEntities = true
    parser.parse()
}


假設攻擊者能夠控制 rawXml 內容，使 XML 與下列相似：


 <?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
   <!ELEMENT foo ANY >
   <!ENTITY xxe SYSTEM "file:///c:/boot.ini" >]><foo>&xxe;</foo>


當 XML 受伺服器評估時，<foo> 元素會包含 boot.ini 檔案的內容。
References
[1] XML External Entity (XXE) Processing OWASP
[2] Testing for XML Injection OWASP
[3] XML External Entities The Web Application Security Consortium
[4] Standards Mapping - Common Weakness Enumeration CWE ID 611
[5] Standards Mapping - Common Weakness Enumeration Top 25 2019 [17] CWE ID 611
[6] Standards Mapping - Common Weakness Enumeration Top 25 2020 [19] CWE ID 611
[7] Standards Mapping - Common Weakness Enumeration Top 25 2021 [23] CWE ID 611
[8] Standards Mapping - Common Weakness Enumeration Top 25 2022 [24] CWE ID 611
[9] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094, CCI-001310, CCI-002385, CCI-002754
[10] Standards Mapping - FIPS200 SI
[11] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[12] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[13] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[14] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[15] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[16] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1), SI-10 Information Input Validation (P1)
[17] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection, SI-10 Information Input Validation
[18] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.5.2 Deserialization Prevention Requirements (L1 L2 L3)
[19] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage
[20] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[21] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-STORAGE-2
[22] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[23] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[24] Standards Mapping - OWASP Top 10 2010 A1 Injection
[25] Standards Mapping - OWASP Top 10 2013 A1 Injection
[26] Standards Mapping - OWASP Top 10 2017 A4 XML External Entities (XXE)
[27] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[34] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[35] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[36] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[37] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[38] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[39] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2.2 - Web Software Attack Mitigation
[40] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002390 CAT II, APSC-DV-002400 CAT II, APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[63] Standards Mapping - Web Application Security Consortium Version 2.00 XML External Entities (WASC-43)
desc.structural.swift.xml_external_entity_injection

XML Injection

Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以變更 XML 的結構和內容。
Explanation
XML Injection 發生於：

1.資料從一個不可信賴的來源進入程式。

2.將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。有時 XML injection 可能導致 Cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes：

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 ABAP iXML 剖析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.abap.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以更改 XML 的結構和內容。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML 插入甚至可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
   <price>100.00</price>
   <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.dotnet.xml_injection
Abstract
識別的方法寫入了未經驗證的 XML 輸入。此呼叫可讓攻擊者將任意元素或屬性插入 XML 文件。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。


2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.cpp.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以變更 XML 的結構和內容。
Explanation
XML Injection 發生於：

1.資料從一個不可信賴的來源進入程式。

2.將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。有時 XML injection 可能導致 Cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes：

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.golang.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以更改 XML 的結構和內容。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] IDS16-J. Prevent XML Injection CERT
[2] INJECT-3: XML and HTML generation requires care Oracle
[3] Standards Mapping - Common Weakness Enumeration CWE ID 91
[4] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[5] Standards Mapping - FIPS200 SI
[6] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[11] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[12] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[13] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[14] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[15] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[16] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[17] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[18] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[19] Standards Mapping - OWASP Top 10 2010 A1 Injection
[20] Standards Mapping - OWASP Top 10 2013 A1 Injection
[21] Standards Mapping - OWASP Top 10 2017 A1 Injection
[22] Standards Mapping - OWASP Top 10 2021 A03 Injection
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.java.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以更改 XML 的結構和內容。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。


2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


這可能允許攻擊者能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.javascript.xml_injection
Abstract
識別的方法寫入了未經驗證的 XML 輸入。此呼叫可讓攻擊者將任意元素或屬性插入 XML 文件。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。


2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.objc.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以更改 XML 的結構和內容。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 XML 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。


此種攻擊更嚴重的形式稱為 XML External Entity (XXE) Injection，發生在當攻擊者控制了被解析的 XML 文件的前端或全部內容。

範例 2：此為易於受 XXE 攻擊的程式碼：

假設攻擊者可以控制將 XML 輸入到下列程式碼：


...
<?php
$goodXML = $_GET["key"];
$doc = simplexml_load_string($goodXml);
echo $doc->testing;
?>
...


現在，假設攻擊者將下列 XML 傳遞到 Example 2 中的程式碼：



<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE foo [
   <!ELEMENT foo ANY >
   <!ENTITY xxe SYSTEM "file:///c:/boot.ini" >]><foo>&xxe;</foo>



處理 XML 時，<foo> 元素的內容會填入系統 boot.ini 檔案的內容。攻擊者可能利用傳回到用戶端的 XML 元素竊取資料或取得資訊，以便知道有哪些網路資源。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.php.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以更改 XML 的結構和內容。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
    <price>100.00</price>
    <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.python.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以變更 XML 的結構和內容。剖析未經驗證的 XML 可能會導致 Denial of Service、洩漏敏感資訊，甚至引發遠端指令碼執行。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2.將資料寫入 XML 文件或剖析為 XML。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
    <price>100.00</price>
    <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Introduction to Software Security: XML Injection Atacks University of Wisconsin-Madison
[2] Exploitation: XML External Entity (XXE) Injection Depth Security
[3] Standards Mapping - Common Weakness Enumeration CWE ID 91
[4] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[5] Standards Mapping - FIPS200 SI
[6] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[11] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[12] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[13] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[14] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[15] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[16] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[17] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[18] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[19] Standards Mapping - OWASP Top 10 2010 A1 Injection
[20] Standards Mapping - OWASP Top 10 2013 A1 Injection
[21] Standards Mapping - OWASP Top 10 2017 A1 Injection
[22] Standards Mapping - OWASP Top 10 2021 A03 Injection
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.ruby.xml_injection
Abstract
將未經驗證的資料寫入 XML 文件中可能讓攻擊者得以變更 XML 的結構和內容。剖析未經驗證的 XML 可能會導致 Denial of Service、洩漏敏感資訊，甚至引發遠端指令碼執行。
Explanation
XML Injection 發生於：

1.資料從一個不可信賴的來源進入程式。

2.將資料寫入 XML 文件或剖析為 XML。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 Cross-site scripting 或 Dynamic code 評估。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] IDS16-J. Prevent XML Injection CERT
[2] INJECT-3: XML and HTML generation requires care Oracle
[3] Standards Mapping - Common Weakness Enumeration CWE ID 91
[4] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[5] Standards Mapping - FIPS200 SI
[6] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[9] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[10] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[11] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[12] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[13] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[14] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[15] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[16] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[17] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[18] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[19] Standards Mapping - OWASP Top 10 2010 A1 Injection
[20] Standards Mapping - OWASP Top 10 2013 A1 Injection
[21] Standards Mapping - OWASP Top 10 2017 A1 Injection
[22] Standards Mapping - OWASP Top 10 2021 A03 Injection
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[35] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.scala.xml_injection
Abstract
識別的方法寫入了未經驗證的 XML 輸入。此呼叫可讓攻擊者將任意元素或屬性插入 XML 文件。
Explanation
XML Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。


2. 將資料寫入 XML 文件。

應用程式通常使用 XML 來儲存資料或傳送訊息。應用程式會將用來儲存資料的 XML 文件視為資料庫，因此文件中可能會包含敏感資訊。XML 訊息通常用於 Web 服務，可用來傳送敏感資訊。XML 訊息甚至可用於傳送驗證憑證。

如果攻擊者有能力撰寫未經處理的 XML，即有可能修改 XML 文件和訊息的語義。在大部分不具惡意的情況中，攻擊者可能會插入外來的標籤，並造成 XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者可能會新增 XML 元素，以此來變更驗證憑證或修改 XML 電子商務資料庫中之價格。在某些情況下，XML injection 可能導致 cross-site scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者能控制以下 XML 中的 shoes。

<order>
   <price>100.00</price>
   <item>shoes</item>
</order>


現在假設此 XML 包含在要求訂購一雙鞋子的後端 Web 服務要求中。假設攻擊者修改其要求並以 shoes 取代 shoes</item><price>1.00</price><item>shoes。新的 XML 會變成：

<order>
    <price>100.00</price>
    <item>shoes</item><price>1.00</price><item>shoes</item>
</order>


使用 SAX 解析器時，第二個 <price> 的值會覆寫第一個 <price> 標籤的值。因此攻擊者將能以 1 美元購買一雙價值 100 美元的鞋子。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.swift.xml_injection

XML Injection: Open XML

Abstract
將未經驗證的資料寫入 Open XML 文件中可以讓攻擊者得以變更基礎 XML 的結構和內容。
Explanation
XML Injection：Open XML 發生於：

1.資料從一個不可信賴的來源進入程式。


2.將資料寫入 Open XML 文件。

Open XML 文件一般用來儲存資訊以呈現給他人，並且通常包含敏感資訊。

如果攻擊者有能力撰寫未經處理的 XML，即有可能更改 Open XML 文件的語義。在大部分不具惡意的情況中，攻擊者會插入外來的標籤，並造成 Open XML 解析器拋出一個異常。在較為惡意的 XML injection 情況下，攻擊者會修改、新增或移除指定重要資訊的 XML 元素。在某些情況下，XML injection 甚至可能導致 Cross-Site Scripting 或 Dynamic Code Evaluation。

範例 1：

假設攻擊者可以從下列 Open XML 文件控制 a:t 標籤。

<a:t>YoY results: up 10%</a:t>


現在，假設此 XML 包含在公司為其股東提供的 Powerpoint 簡報中。在此情況下，公司提供將文件上傳到其面向客戶的網站的服務，該網站內部存在 XML injection 漏洞。假設攻擊者修改文件以指示「YoY 結果：下降 10%」。此重大更新可能會導致公司股價大幅波動。即使不做任何修改，在變得眾所周知之前可以存取此機密資訊的使用者也可以使他們能夠像在進行內部交易一樣在股市上利用此資訊。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 91
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[9] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[11] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[12] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[13] Standards Mapping - OWASP Top 10 2010 A1 Injection
[14] Standards Mapping - OWASP Top 10 2013 A1 Injection
[15] Standards Mapping - OWASP Top 10 2017 A1 Injection
[16] Standards Mapping - OWASP Top 10 2021 A03 Injection
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3810 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3810 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3810 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3810 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3810 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3810 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Web Application Security Consortium Version 2.00 XML Injection (WASC-23)
desc.dataflow.dotnet.xml_injection_open_xml

XPath Injection

Abstract
透過使用者輸入來建立的動態 XPath 查詢可讓攻擊者修改指令的意義。
Explanation
XPath Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料並以動態方式建構 XPath 查詢。

範例 1：以下程式碼會動態建構並執行一個 XPath 查詢，以取得指定帳戶 ID 的電子郵件地址。由於帳戶 ID 是讀取自 HTTP 要求，因此無法受到信任。


...
string acctID = Request["acctID"];
string query = null;
if(acctID != null) {
       StringBuffer sb = new StringBuffer("/accounts/account[acctID='");
       sb.append(acctID);
       sb.append("']/email/text()");
       query = sb.toString();
}

XPathDocument docNav = new XPathDocument(myXml);
XPathNavigator nav = docNav.CreateNavigator();
nav.Evaluate(query);
...


正常情況下，例如搜尋屬於 1 號帳戶的電子郵件地址時，此程式碼執行的查詢將會如以下所示：

/accounts/account[acctID='1']/email/text()

但是，由於這個查詢是連續固定基礎查詢字串和使用者輸入字串所動態建構而成的，所以只有在 acctID 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 acctID 輸入字串 1' or '1' = '1，那麼查詢將會變更為：

/accounts/account[acctID='1' or '1' = '1']/email/text()

附加條件 1' or '1' = '1 會使 where 子句的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//email/text()

由於查詢必須只會傳回驗證使用者所擁有的項目，但簡化查詢會讓攻擊者不再受到此要求所限制；因此，查詢現在將會傳回所有儲存在文件中的電子郵件地址，而不考慮指定的擁有者為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 643
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.1 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XPath Injection (WASC-39)
[57] Standards Mapping - Web Application Security Consortium 24 + 2 XPath Injection
desc.dataflow.dotnet.xpath_injection
Abstract
識別的方法會呼叫使用未經驗證的輸入所建立的 XPath 查詢。此呼叫可讓攻擊者修改指令的意義或是執行任意的 XPath 查詢。
Explanation
XPath Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。




2. 使用資料並以動態方式建構 XPath 查詢。

範例 1：以下 Objective-C 程式碼會呼叫 C API，以動態方式建構並執行 XPath 查詢，以擷取指定帳戶 ID 的電子郵件地址。由於帳戶 ID 是讀取自 HTTP 要求，因此無法受到信任。


...
    NSString *accountStr = account.text;

    xmlXPathContextPtr xpathCtx;
    NSString *query = @"/accounts/account[actId='" + accountStr + @"']/email/text()";

    xpathCtx = xmlXPathNewContext(doc);

    /* Evaluate XPath expression */
    xmlChar *queryString =
        (xmlChar *)[query cStringUsingEncoding:NSUTF8StringEncoding];
    xpathObj = xmlXPathEvalExpression(queryString, xpathCtx);
...


正常情況下，例如搜尋屬於 1 號帳戶的電子郵件地址時，此程式碼執行的查詢將會如以下所示：

/accounts/account[acctID='1']/email/text()

但是，由於這個查詢是連續固定基礎查詢字串和使用者輸入字串所動態建構而成的，所以只有在 acctID 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 acctID 輸入字串 1' or '1' = '1，那麼查詢將會變更為：

/accounts/account[acctID='1' or '1' = '1']/email/text()

附加條件 1' or '1' = '1 會使 where 子句的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//email/text()

由於查詢必須只會傳回驗證使用者所擁有的項目，但簡化查詢會讓攻擊者不再受到此要求所限制；因此，查詢現在將會傳回所有儲存在文件中的電子郵件地址，而不考慮指定的擁有者為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 643
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.1 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XPath Injection (WASC-39)
[57] Standards Mapping - Web Application Security Consortium 24 + 2 XPath Injection
desc.dataflow.cpp.xpath_injection
Abstract
透過使用者輸入來建立的動態 XPath 查詢可讓攻擊者修改指令的意義。
Explanation
XPath Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料並以動態方式建構 XPath 查詢。

範例 1：以下程式碼會動態建構並執行一個 XPath 查詢，以取得指定帳戶 ID 的電子郵件地址。由於帳戶 ID 是讀取自 HTTP 要求，因此無法受到信任。


query = "/accounts/account[acctID='" & url.acctID & "']/email/text()";
selectedElements = XmlSearch(myxmldoc, query);


正常情況下，例如搜尋屬於 1 號帳戶的電子郵件地址時，此程式碼執行的查詢將會如以下所示：

/accounts/account[acctID='1']/email/text()

但是，由於這個查詢是連續固定基礎查詢字串和使用者輸入字串所動態建構而成的，所以只有在 acctID 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 acctID 輸入字串 1' or '1' = '1，那麼查詢將會變更為：

/accounts/account[acctID='1' or '1' = '1']/email/text()

附加條件 1' or '1' = '1 會使 where 子句的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//email/text()

由於查詢必須只會傳回驗證使用者所擁有的項目，但簡化查詢會讓攻擊者不再受到此要求所限制；因此，查詢現在將會傳回所有儲存在文件中的電子郵件地址，而不考慮指定的擁有者為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 643
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.1 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XPath Injection (WASC-39)
[57] Standards Mapping - Web Application Security Consortium 24 + 2 XPath Injection
desc.dataflow.cfml.xpath_injection
Abstract
透過使用者輸入來建立的動態 XPath 查詢可讓攻擊者修改指令的意義。
Explanation
XPath Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料並以動態方式建構 XPath 查詢。

範例 1：以下程式碼會動態建構並執行一個 XPath 查詢，以取得指定帳戶 ID 的電子郵件地址。由於帳戶 ID 是讀取自 HTTP 要求，因此無法受到信任。


...
String acctID = request.getParameter("acctID");
String query = null;
if(acctID != null) {
       StringBuffer sb = new StringBuffer("/accounts/account[acctID='");
       sb.append(acctID);
       sb.append("']/email/text()");
       query = sb.toString();
}

DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true);
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document doc = builder.parse("accounts.xml");
XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
XPathExpression expr = xpath.compile(query);
Object result = expr.evaluate(doc, XPathConstants.NODESET);
...


正常情況下，例如搜尋屬於 1 號帳戶的電子郵件地址時，此程式碼執行的查詢將會如以下所示：

/accounts/account[acctID='1']/email/text()

但是，由於這個查詢是連續固定基礎查詢字串和使用者輸入字串所動態建構而成的，所以只有在 acctID 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 acctID 輸入字串 1' or '1' = '1，那麼查詢將會變更為：

/accounts/account[acctID='1' or '1' = '1']/email/text()

附加條件 1' or '1' = '1 會使 where 子句的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//email/text()

由於查詢必須只會傳回驗證使用者所擁有的項目，但簡化查詢會讓攻擊者不再受到此要求所限制；因此，查詢現在將會傳回所有儲存在文件中的電子郵件地址，而不考慮指定的擁有者為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 643
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.1 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XPath Injection (WASC-39)
[57] Standards Mapping - Web Application Security Consortium 24 + 2 XPath Injection
desc.dataflow.java.xpath_injection
Abstract
識別的方法會呼叫使用未經驗證的輸入所建立的 XPath 查詢。此呼叫可讓攻擊者修改指令的意義或是執行任意的 XPath 查詢。
Explanation
XPath Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。




2. 使用資料並以動態方式建構 XPath 查詢。

範例 1：以下程式碼會動態建構並執行一個 XPath 查詢，以取得指定帳戶 ID 的電子郵件地址。由於帳戶 ID 是讀取自 HTTP 要求，因此無法受到信任。


...
    NSString *accountStr = account.text;

    xmlXPathContextPtr xpathCtx;
    NSString *query = @"/accounts/account[actId='" + accountStr + @"']/email/text()";

    xpathCtx = xmlXPathNewContext(doc);

    /* Evaluate XPath expression */
    xmlChar *queryString =
        (xmlChar *)[query cStringUsingEncoding:NSUTF8StringEncoding];
    xpathObj = xmlXPathEvalExpression(queryString, xpathCtx);
...


正常情況下，例如搜尋屬於 1 號帳戶的電子郵件地址時，此程式碼執行的查詢將會如以下所示：

/accounts/account[acctID='1']/email/text()

但是，由於這個查詢是連續固定基礎查詢字串和使用者輸入字串所動態建構而成的，所以只有在 acctID 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 acctID 輸入字串 1' or '1' = '1，那麼查詢將會變更為：

/accounts/account[acctID='1' or '1' = '1']/email/text()

附加條件 1' or '1' = '1 會使 where 子句的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//email/text()

由於查詢必須只會傳回驗證使用者所擁有的項目，但簡化查詢會讓攻擊者不再受到此要求所限制；因此，查詢現在將會傳回所有儲存在文件中的電子郵件地址，而不考慮指定的擁有者為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 643
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.1 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XPath Injection (WASC-39)
[57] Standards Mapping - Web Application Security Consortium 24 + 2 XPath Injection
desc.dataflow.objc.xpath_injection
Abstract
透過使用者輸入來建立的動態 XPath 查詢可讓攻擊者修改指令的意義。
Explanation
XPath Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料並以動態方式建構 XPath 查詢。

範例 1：以下程式碼會動態建構並執行一個 XPath 查詢，以取得指定帳戶 ID 的電子郵件地址。由於帳戶 ID 是讀取自 HTTP 要求，因此無法受到信任。


...
<?php
load('articles.xml');
 
$xpath = new DOMXPath($doc);
$emailAddrs = $xpath->query(&quot;/accounts/account[acctID='&quot; . $_GET[&quot;test1&quot;] . &quot;']/email/text()&quot;);
//$arts = $xpath->evaluate(&quot;/accounts/account[acctID='&quot; . $_GET[&quot;test1&quot;] . &quot;']/email/text()&quot;)
 
foreach ($emailAddrs as $email)
{
    echo $email->nodeValue."";
}
	?>
...


正常情況下，例如搜尋屬於 1 號帳戶的電子郵件地址時，此程式碼執行的查詢將會如以下所示：

/accounts/account[acctID='1']/email/text()

但是，由於這個查詢是連續固定查詢字串和使用者輸入字串所動態建構而成的，所以只有在 acctID 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 acctID 輸入字串 1' or '1' = '1，那麼查詢將會變更為：

/accounts/account[acctID='1' or '1' = '1']/email/text()

附加條件 1' or '1' = '1 會使 where 子句的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//email/text()

由於查詢必須只會傳回驗證使用者所擁有的項目，但簡化查詢會讓攻擊者不再受到此要求所限制；因此，查詢現在將會傳回所有儲存在文件中的電子郵件地址，而不考慮指定的擁有者為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 643
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.1 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XPath Injection (WASC-39)
[57] Standards Mapping - Web Application Security Consortium 24 + 2 XPath Injection
desc.dataflow.php.xpath_injection
Abstract
透過使用者輸入來建立的動態 XPath 查詢可讓攻擊者修改指令的意義。
Explanation
XPath Injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料並以動態方式建構 XPath 查詢。

範例 1：以下程式碼會動態建構並執行一個 XPath 查詢，以取得指定帳戶 ID 的電子郵件地址。由於帳戶 ID 是讀取自 HTTP 要求，因此無法受到信任。


...
tree = etree.parse('articles.xml')
emailAddrs = "/accounts/account[acctID=" + request.GET["test1"] + "]/email/text()"
r = tree.xpath(emailAddrs)
...


正常情況下，例如搜尋屬於 1 號帳戶的電子郵件地址時，此程式碼執行的查詢將會如以下所示：

/accounts/account[acctID='1']/email/text()

但是，由於這個查詢是連續固定查詢字串和使用者輸入字串所動態建構而成的，所以只有在 acctID 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 acctID 輸入字串 1' or '1' = '1，那麼查詢將會變更為：

/accounts/account[acctID='1' or '1' = '1']/email/text()

附加條件 1' or '1' = '1 會使 where 子句的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//email/text()

由於查詢必須只會傳回驗證使用者所擁有的項目，但簡化查詢會讓攻擊者不再受到此要求所限制；因此，查詢現在將會傳回所有儲存在文件中的電子郵件地址，而不考慮指定的擁有者為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 643
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2012 Rule 1.3
[6] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C Guidelines 2023 Directive 4.14, Rule 1.3
[7] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2008 Rule 0-3-1
[8] Standards Mapping - Motor Industry Software Reliability Association (MISRA) C++ Guidelines 2023 Rule 4.1.3
[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.1 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.10 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[12] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[15] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[16] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[17] Standards Mapping - OWASP Top 10 2010 A1 Injection
[18] Standards Mapping - OWASP Top 10 2013 A1 Injection
[19] Standards Mapping - OWASP Top 10 2017 A1 Injection
[20] Standards Mapping - OWASP Top 10 2021 A03 Injection
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002550 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Web Application Security Consortium Version 2.00 XPath Injection (WASC-39)
[57] Standards Mapping - Web Application Security Consortium 24 + 2 XPath Injection
desc.dataflow.python.xpath_injection

XQuery Injection

Abstract
透過使用者輸入來建立的動態 XQuery 運算式可讓攻擊者修改指令的意義。
Explanation
XQuery injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料以動態方式建構 XQuery 運算式。

範例 1：以下程式碼動態建構並執行可擷取指定使用者名稱和密碼組合的使用者帳戶之 XQuery 運算式。使用者名稱和密碼是從 HTTP 要求讀取，因此不受信賴。


  ...

  String squery = "for \$user in doc(users.xml)//user[username='" + Request["username"] + "'and pass='" + Request["password"] + "'] return \$user";

  Processor processor = new Processor();

  XdmNode indoc = processor.NewDocumentBuilder().Build(new Uri(Server.MapPath("users.xml")));

  StreamReader query = new StreamReader(squery);
  XQueryCompiler compiler = processor.NewXQueryCompiler();
  XQueryExecutable exp = compiler.Compile(query.ReadToEnd());
  XQueryEvaluator eval = exp.Load();
  eval.ContextItem = indoc;

  Serializer qout = new Serializer();
  qout.SetOutputProperty(Serializer.METHOD, "xml");
  qout.SetOutputProperty(Serializer.DOCTYPE_PUBLIC, "-//W3C//DTD XHTML 1.0 Strict//EN");
  qout.SetOutputProperty(Serializer.DOCTYPE_SYSTEM, "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd");
  qout.SetOutputProperty(Serializer.INDENT, "yes");
  qout.SetOutputProperty(Serializer.OMIT_XML_DECLARATION, "no");

  qout.SetOutputWriter(Response.Output);
  eval.Run(qout);

  ...


正常情況下，例如以適當的使用者名稱和密碼搜尋使用者帳戶，該程式碼執行的運算式如下所示：

for \$user in doc(users.xml)//user[username='test_user' and pass='pass123'] return \$user

但是，由於這個運算式是連續固定基礎查詢字串和使用者輸入字串所動態建構而成的，所以只有在 username 或 password 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 username 輸入字串 admin' or 1=1 or ''='，那麼查詢將會變更為：

for \$user in doc(users.xml)//user[username='admin' or 1=1 or ''='' and password='x' or ''=''] return \$user

附加條件 admin' or 1=1 or ''=' 會使 XQuery 運算式的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//user[username='admin']

查詢必須符合密碼，但查詢的簡化使攻擊者不再受到此要求所限制；因此，查詢現在會傳回儲存在文件中的管理員使用者，而不再考慮輸入的密碼為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 652
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[8] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[9] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[10] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[11] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[12] Standards Mapping - OWASP Top 10 2010 A1 Injection
[13] Standards Mapping - OWASP Top 10 2013 A1 Injection
[14] Standards Mapping - OWASP Top 10 2017 A1 Injection
[15] Standards Mapping - OWASP Top 10 2021 A03 Injection
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[28] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[29] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Web Application Security Consortium Version 2.00 XQuery Injection (WASC-46)
desc.dataflow.dotnet.xquery_injection
Abstract
透過使用者輸入來建立的動態 XQuery 運算式可讓攻擊者修改指令的意義。
Explanation
XQuery injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料以動態方式建構 XQuery 運算式。

範例 1：以下程式碼動態建構並執行可擷取指定使用者名稱和密碼組合的使用者帳戶之 XQuery 運算式。使用者名稱和密碼是從 HTTP 要求讀取，因此不受信賴。


  ...
  XQDataSource xqs = new XQDataSource();
  XQConnection conn = xqs.getConnection();
  String query = "for \$user in doc(users.xml)//user[username='" + request.getParameter("username") + "'and pass='" + request.getParameter("password") + "'] return \$user";

  XQPreparedExpression xqpe = conn.prepareExpression(query);

  XQResultSequence rs = xqpe.executeQuery();

  ...


正常情況下，例如以適當的使用者名稱和密碼搜尋使用者帳戶，該程式碼執行的運算式如下所示：

for \$user in doc(users.xml)//user[username='test_user' and pass='pass123'] return \$user

但是，由於這個運算式是連續固定基礎查詢字串和使用者輸入字串所動態建構而成的，所以只有在 username 或 password 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 username 輸入字串 admin' or 1=1 or ''='，那麼查詢將會變更為：

for \$user in doc(users.xml)//user[username='admin' or 1=1 or ''='' and password='x' or ''=''] return \$user

附加條件 admin' or 1=1 or ''=' 會使 XQuery 運算式的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//user[username='admin']

查詢必須符合密碼，但查詢的簡化使攻擊者不再受到此要求所限制；因此，查詢現在會傳回儲存在文件中的管理員使用者，而不再考慮輸入的密碼為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 652
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[8] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[9] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[10] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[11] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[12] Standards Mapping - OWASP Top 10 2010 A1 Injection
[13] Standards Mapping - OWASP Top 10 2013 A1 Injection
[14] Standards Mapping - OWASP Top 10 2017 A1 Injection
[15] Standards Mapping - OWASP Top 10 2021 A03 Injection
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[28] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[29] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Web Application Security Consortium Version 2.00 XQuery Injection (WASC-46)
desc.dataflow.java.xquery_injection
Abstract
透過使用者輸入來建立的動態 XQuery 運算式可讓攻擊者修改指令的意義。
Explanation
XQuery injection 發生於：

1. 資料從一個不可信賴的來源進入程式。



2. 使用資料以動態方式建構 XQuery 運算式。

範例 1：以下程式碼動態建構並執行可擷取指定使用者名稱和密碼組合的使用者帳戶之 XQuery 運算式。使用者名稱和密碼是從 HTTP 要求讀取，因此不受信賴。


...

$memstor = InMemoryStore::getInstance();
$z = Zorba::getInstance($memstor);

try {
  // get data manager
  $dataman = $z->getXmlDataManager();

  // load external XML document
  $dataman->loadDocument('users.xml', file_get_contents('users.xml'));

  // create and compile query
  $express =
"for \$user in doc(users.xml)//user[username='" . $_GET["username"] . "'and pass='" . $_GET["password"] . "'] return \$user"

  $query = $zorba->compileQuery($express);

  // execute query
  $result = $query->execute();



?>
...


正常情況下，例如以適當的使用者名稱和密碼搜尋使用者帳戶，該程式碼執行的運算式如下所示：

for \$user in doc(users.xml)//user[username='test_user' and pass='pass123'] return \$user

但是，由於這個運算式是串聯固定查詢字串和使用者輸入字串所動態建構而成的，因此只有在 username 或 password 沒有包含單引號字元的時候，查詢才會正確執行。如果攻擊者為 username 輸入字串 admin' or 1=1 or ''='，那麼查詢將會變更為：

for \$user in doc(users.xml)//user[username='admin' or 1=1 or ''='' and password='x' or ''=''] return \$user

附加條件 admin' or 1=1 or ''=' 會使 XQuery 運算式的評估永遠為 True，所以此查詢在邏輯上可等同於以下較簡化的查詢：

//user[username='admin']

查詢必須符合密碼，但查詢的簡化使攻擊者不再受到此要求所限制；因此，查詢現在會傳回儲存在文件中的管理員使用者，而不再考慮輸入的密碼為何。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 652
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[8] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[9] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[10] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[11] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[12] Standards Mapping - OWASP Top 10 2010 A1 Injection
[13] Standards Mapping - OWASP Top 10 2013 A1 Injection
[14] Standards Mapping - OWASP Top 10 2017 A1 Injection
[15] Standards Mapping - OWASP Top 10 2021 A03 Injection
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[28] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[29] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Web Application Security Consortium Version 2.00 XQuery Injection (WASC-46)
desc.dataflow.php.xquery_injection

XSLT Injection

Abstract
若處理未經驗證的 XSL 樣式表，攻擊者可藉此變更所產生 XML 的結構及內容、從檔案系統加入任意檔案，或執行任意程式碼。
Explanation
XSLT injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XSL 樣式表。


應用程式一般會使用 XSL 樣式表將 XML 文件從一種格式轉換為另一種格式。XSL 樣式表包括特殊函數，函數可強化轉換過程，但若使用不當可能產生額外的安全弱點。

如果攻擊者有能力在樣式表中撰寫 XSL 元素，即有可能更改 XSL 樣式表的語義和處理。攻擊者可能會更改樣式表的輸出，如此可以啟用 XSS (cross-site scripting) 攻擊，暴露本機檔案系統資源的內容，或執行任意程式碼。

範例 1：這些程式碼容易受到 XSLT Injection 的攻擊：


  ...
  String xmlUrl = Request["xmlurl"];
  String xslUrl = Request["xslurl"];

  XslCompiledTransform xslt = new XslCompiledTransform();
  xslt.Load(xslUrl);

  xslt.Transform(xmlUrl, "books.html");
  ...
Example 1 會在攻擊者將識別的 XSL 傳遞給 XSTL 處理器時，產生三種不同的攻擊：

1. XSS：



  <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="/">
      <script>alert(123)</script>
    </xsl:template>
  </xsl:stylesheet>


處理 XSL 樣式表時，受害者的瀏覽器中會呈現 <script> 標籤，使得攻擊者得以執行 Cross-Site Scripting 攻擊。

2. 在伺服器檔案系統中讀取任意檔案：



  <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="/">
      <xsl:copy-of select="document('file:///c:/winnt/win.ini')"/>
    </xsl:template>
  </xsl:stylesheet>


上述 XSL 樣式表將傳回 /etc/passwd 檔案內容。

3. 執行任意程式碼：

XSLT 處理器能夠將原生語言方法 (若未停用) 暴露為 XSLT 函數。



  <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:App="http://www.tempuri.org/App">
    <msxsl:script implements-prefix="App" language="C#">
      <![CDATA[
        public string ToShortDateString(string date)
          {
              System.Diagnostics.Process.Start("cmd.exe");
              return "01/01/2001";
          }
      ]]>
    </msxsl:script>
    <xsl:template match="ArrayOfTest">
      <TABLE>
        <xsl:for-each select="Test">
          <TR>
          <TD>
            <xsl:value-of select="App:ToShortDateString(TestDate)" />
          </TD>
          </TR>
        </xsl:for-each>
      </TABLE>
    </xsl:template>
  </xsl:stylesheet>


上述樣式表將在伺服器上執行「cmd.exe」指令。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 494
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.14.2 Configuration Architectural Requirements (L2 L3), 10.3.2 Deployed Application Integrity Controls (L1 L2 L3), 12.3.3 File Execution Requirements (L1 L2 L3), 14.2.3 Dependency (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[9] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[11] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[12] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[13] Standards Mapping - OWASP Top 10 2010 A1 Injection
[14] Standards Mapping - OWASP Top 10 2013 A1 Injection
[15] Standards Mapping - OWASP Top 10 2017 A1 Injection
[16] Standards Mapping - OWASP Top 10 2021 A03 Injection
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[52] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.dotnet.xslt_injection
Abstract
若處理未經驗證的 XSL 樣式表，攻擊者可藉此變更所產生 XML 的結構及內容、從檔案系統加入任意檔案，或執行任意程式碼。
Explanation
XSLT injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XSL 樣式表。


應用程式一般會使用 XSL 樣式表將 XML 文件從一種格式轉換為另一種格式。XSL 樣式表包括特殊函數，函數可強化轉換過程，但若使用不當可能產生額外的安全弱點。

如果攻擊者有能力在樣式表中撰寫 XSL 元素，即有可能更改 XSL 樣式表的語義和處理。攻擊者可能會更改樣式表的輸出，如此可以啟用 XSS (cross-site scripting) 攻擊，暴露本機檔案系統資源的內容，或執行任意程式碼。

範例 1：這些程式碼容易受到 XSLT Injection 的攻擊：


  ...
  InputStream xmlUrl = Utils.getFromURL(request.getParameter("xmlurl"));
  InputStream xsltUrl = Utils.getFromURL(request.getParameter("xslurl"));

  Source xmlSource = new StreamSource(xmlUrl);
  Source xsltSource = new StreamSource(xsltUrl);
  Result result = new StreamResult(System.out);

  TransformerFactory transFact = TransformerFactory.newInstance();
  Transformer trans = transFact.newTransformer(xsltSource);
  trans.transform(xmlSource, result);
  ...
Example 1 中的程式碼會在攻擊者將識別的 XSL 傳遞給 XSTL 處理器時，產生三種不同的攻擊：

1. XSS：



  <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="/">
      <script>alert(123)</script>
    </xsl:template>
  </xsl:stylesheet>


處理 XSL 樣式表時，受害者的瀏覽器中會呈現 <script> 標籤，使得攻擊者得以執行 Cross-Site Scripting 攻擊。

2. 在伺服器檔案系統中讀取任意檔案：



  <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="/">
      <xsl:copy-of select="document('/etc/passwd')"/>
    </xsl:template>
  </xsl:stylesheet>


上述 XSL 樣式表將傳回 /etc/passwd 檔案內容。

3. 執行任意 Java 程式碼：

XSLT 處理器能夠將原生 Java 語言方法 (若未停用) 暴露為 XSLT 函數。



  <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:rt="http://xml.apache.org/xalan/java/java.lang.Runtime" xmlns:ob="http://xml.apache.org/xalan/java/java.lang.Object">
    <xsl:template match="/">
      <xsl:variable name="rtobject" select="rt:getRuntime()"/>
      <xsl:variable name="process" select="rt:exec($rtobject,'ls')"/>
      <xsl:variable name="processString" select="ob:toString($process)"/>
      <xsl:value-of select="$processString"/>
    </xsl:template>
  </xsl:stylesheet>


前述樣式表將在伺服器上執行「ls」指令。
References
[1] INJECT-8: Take care interpreting untrusted code Oracle
[2] Standards Mapping - Common Weakness Enumeration CWE ID 494
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[4] Standards Mapping - FIPS200 SI
[5] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[8] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.14.2 Configuration Architectural Requirements (L2 L3), 10.3.2 Deployed Application Integrity Controls (L1 L2 L3), 12.3.3 File Execution Requirements (L1 L2 L3), 14.2.3 Dependency (L1 L2 L3)
[9] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[10] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[11] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[12] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[13] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[14] Standards Mapping - OWASP Top 10 2010 A1 Injection
[15] Standards Mapping - OWASP Top 10 2013 A1 Injection
[16] Standards Mapping - OWASP Top 10 2017 A1 Injection
[17] Standards Mapping - OWASP Top 10 2021 A03 Injection
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[29] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[30] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[53] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.java.xslt_injection
Abstract
若處理未經驗證的 XSL 樣式表，攻擊者可藉此變更所產生 XML 的結構及內容、從檔案系統加入任意檔案，或執行任意程式碼。
Explanation
XSLT injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XSL 樣式表。


應用程式一般會使用 XSL 樣式表將 XML 文件從一種格式轉換為另一種格式。XSL 樣式表包括特殊函數，函數可強化轉換過程，但若使用不當可能產生額外的安全弱點。

如果攻擊者有能力在樣式表中撰寫 XSL 元素，即有可能更改 XSL 樣式表的語義和處理。攻擊者可能會更改樣式表的輸出，如此可以啟用 XSS (cross-site scripting) 攻擊，暴露本機檔案系統資源的內容，或執行任意程式碼。若是攻擊者能夠全面掌控提交到應用程式的樣式表，則攻擊者也能夠執行 XXE (XML External Entity) injection 攻擊。

範例 1：這些程式碼容易受到 XSLT Injection 的攻擊：


...
<?php

$xml = new DOMDocument;
$xml->load('local.xml');

$xsl = new DOMDocument;
$xsl->load($_GET['key']);

$processor = new XSLTProcessor;
$processor->registerPHPFunctions();
$processor->importStyleSheet($xsl);

echo $processor->transformToXML($xml);

?>
...
Example 1 中的程式碼會在攻擊者將識別的 XSL 傳遞給 XSTL 處理器時，產生三種不同的攻擊：

1. XSS：



<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:php="http://php.net/xsl">
<xsl:template match="/">
<script>alert(123)</script>
</xsl:template>
</xsl:stylesheet>



處理 XSL 樣式表時，受害者的瀏覽器中會呈現 <script> 標籤，使得攻擊者得以執行 Cross-Site Scripting 攻擊。

2. 在伺服器檔案系統中讀取任意檔案：



<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:php="http://php.net/xsl">
<xsl:template match="/">
<xsl:copy-of select="document('/etc/passwd')"/>
</xsl:template>
</xsl:stylesheet>



上述 XSL 樣式表將傳回 /etc/passwd 檔案內容。

3. 執行任意 PHP 程式碼：

XSLT 處理器能夠經由啟用「registerPHPFunctions」，將原生 PHP 語言方法暴露為 XSLT 函數。



<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:php="http://php.net/xsl">
<xsl:template match="/">
<xsl:value-of select="php:function('passthru','ls -la')"/>
</xsl:template>
</xsl:stylesheet>



上述樣式表將輸出伺服器上的「ls」指令結果。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 494
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.14.2 Configuration Architectural Requirements (L2 L3), 10.3.2 Deployed Application Integrity Controls (L1 L2 L3), 12.3.3 File Execution Requirements (L1 L2 L3), 14.2.3 Dependency (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[9] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[11] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[12] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[13] Standards Mapping - OWASP Top 10 2010 A1 Injection
[14] Standards Mapping - OWASP Top 10 2013 A1 Injection
[15] Standards Mapping - OWASP Top 10 2017 A1 Injection
[16] Standards Mapping - OWASP Top 10 2021 A03 Injection
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[52] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.php.xslt_injection
Abstract
若處理未經驗證的 XSL 樣式表，攻擊者可藉此變更所產生 XML 的結構及內容、從檔案系統加入任意檔案，或執行任意程式碼。
Explanation
XSLT injection 發生於：

1. 資料從一個不可信賴的來源進入程式。

2. 將資料寫入 XSL 樣式表。


應用程式一般會使用 XSL 樣式表將 XML 文件從一種格式轉換為另一種格式。XSL 樣式表包括特殊函數，函數可強化轉換過程，但若使用不當可能產生額外的安全弱點。

如果攻擊者有能力在樣式表中撰寫 XSL 元素，即有可能更改 XSL 樣式表的語義和處理。攻擊者可能會更改樣式表的輸出，如此可以啟用 XSS (cross-site scripting) 攻擊，暴露本機檔案系統資源的內容，或執行任意程式碼。

範例 1：這些程式碼容易受到 XSLT Injection 的攻擊：


...
xml = StringIO.StringIO(request.POST['xml'])
xslt = StringIO.StringIO(request.POST['xslt'])

xslt_root = etree.XML(xslt)
transform = etree.XSLT(xslt_root)
result_tree = transform(xml)
return render_to_response(template_name, {'result': etree.tostring(result_tree)})
...
Example 1 中的程式碼會在攻擊者將識別的 XSL 傳遞給 XSTL 處理器時，產生三種不同的攻擊：

1. XSS：



<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="/">
    <script>alert(123)</script>
  </xsl:template>
</xsl:stylesheet>



處理 XSL 樣式表時，受害者的瀏覽器中會呈現 <script> 標籤，使得攻擊者得以執行 Cross-Site Scripting 攻擊。

2. 在伺服器檔案系統中讀取任意檔案：



<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="/">
    <xsl:copy-of select="document('/etc/passwd')"/>
  </xsl:template>
</xsl:stylesheet>



上述 XSL 樣式表將傳回 /etc/passwd 檔案內容。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 494
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[3] Standards Mapping - FIPS200 SI
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.14.2 Configuration Architectural Requirements (L2 L3), 10.3.2 Deployed Application Integrity Controls (L1 L2 L3), 12.3.3 File Execution Requirements (L1 L2 L3), 14.2.3 Dependency (L1 L2 L3)
[8] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[9] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[11] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[12] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[13] Standards Mapping - OWASP Top 10 2010 A1 Injection
[14] Standards Mapping - OWASP Top 10 2013 A1 Injection
[15] Standards Mapping - OWASP Top 10 2017 A1 Injection
[16] Standards Mapping - OWASP Top 10 2021 A03 Injection
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 6.2 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[52] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.python.xslt_injection