界: Input Validation and Representation
輸入驗證和表示法問題是由中繼字元、替代編碼和數值表示法引起的。信任輸入會導致安全問題。問題包括：「Buffer Overflows」、「Cross-Site Scripting」攻擊、「SQL Injection」及其他許多問題。
SQL Injection: PartiQL
Abstract
透過不可信賴來源的輸入來建構的動態 PartiQL 陳述式可讓攻擊者修改陳述式的意義或是執行任意的 PartiQL 指令。
Explanation
SQL Injection：PartiQL 問題會在以下情況中發生：
1.資料從一個不可信賴的來源進入程式。
2.資料用來動態建構 PartiQL 查詢。
範例 1：以下程式碼動態地建構並執行了一個 PartiQL 查詢，該查詢可用來搜尋符合指定名稱的項目。查詢僅會顯示
此查詢欲執行以下程式碼：
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
附加條件
避免 SQL injection 攻擊的一個傳統方法為，將其視為輸入驗證的問題，只接受安全值允許清單中的字元，或是驗證並避免來自潛在惡意值的清單 (拒絕清單)。檢查允許清單是一種相當有效的方法，可強制執行嚴格的輸入驗證規則，而參數化 SQL 陳述式所需的維護較少，並且能提供更高的安全性保障。通常，對於實作拒絕清單方法，總是存在一些漏洞，所以無法有效避免 SQL injection 攻擊。例如，攻擊者可能：
- 將未列入黑名單的欄位當作目標
- 尋找方法以略過特定逸出中繼字元 (escape meta-character) 的需要
- 使用儲存的程序去隱藏插入的中繼字元
在 PartiQL 查詢中手動避開輸入特殊字元有一定作用，但無法完全保護您的應用程式免於 PartiQL Injection 攻擊。
1.資料從一個不可信賴的來源進入程式。
2.資料用來動態建構 PartiQL 查詢。
範例 1：以下程式碼動態地建構並執行了一個 PartiQL 查詢，該查詢可用來搜尋符合指定名稱的項目。查詢僅會顯示
owner 與目前已驗證使用者名稱相符的項目。
...
string userName = identity.User;
string itemName = apiGatewayProxyRequest.QueryStringParameters['item'];
string statement = $"SELECT * FROM items WHERE owner = '{userName}' AND itemname = '{itemName}'";
var executeStatementRequest = new ExecuteStatementRequest();
executeStatementRequest.Statement = statement;
var executeStatementResponse = await dynamoDBClient.ExecuteStatementAsync(executeStatementRequest);
return displayResults(executeStatementResponse.Items);
...
此查詢欲執行以下程式碼：
SELECT * FROM items
WHERE owner = <userName>
AND itemname = <itemName>;
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
itemName 沒有包含單引號字元的時候，查詢才會正確執行。如果使用者名稱為 wiley 的攻擊者在 itemName 中輸入字串 name' OR 'a'='a，那麼查詢將變成以下內容：
SELECT * FROM items
WHERE owner = 'wiley'
AND itemname = 'name' OR 'a'='a';
附加條件
OR 'a'='a' 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：避免 SQL injection 攻擊的一個傳統方法為，將其視為輸入驗證的問題，只接受安全值允許清單中的字元，或是驗證並避免來自潛在惡意值的清單 (拒絕清單)。檢查允許清單是一種相當有效的方法，可強制執行嚴格的輸入驗證規則，而參數化 SQL 陳述式所需的維護較少，並且能提供更高的安全性保障。通常，對於實作拒絕清單方法，總是存在一些漏洞，所以無法有效避免 SQL injection 攻擊。例如，攻擊者可能：
- 將未列入黑名單的欄位當作目標
- 尋找方法以略過特定逸出中繼字元 (escape meta-character) 的需要
- 使用儲存的程序去隱藏插入的中繼字元
在 PartiQL 查詢中手動避開輸入特殊字元有一定作用，但無法完全保護您的應用程式免於 PartiQL Injection 攻擊。
References
[1] S. J. Friedl SQL Injection Attacks by Example
[2] P. Litwin Stop SQL Injection Attacks Before They Stop You MSDN Magazine
[3] P. Finnigan SQL Injection and Oracle, Part One Security Focus
[4] M. Howard, D. LeBlanc Writing Secure Code, Second Edition Microsoft Press
[5] PartiQL - A SQL-Compatible Query Language for Amazon DynamoDB
[6] Standards Mapping - Common Weakness Enumeration CWE ID 89
[7] Standards Mapping - Common Weakness Enumeration Top 25 2019 [6] CWE ID 089
[8] Standards Mapping - Common Weakness Enumeration Top 25 2020 [6] CWE ID 089
[9] Standards Mapping - Common Weakness Enumeration Top 25 2021 [6] CWE ID 089
[10] Standards Mapping - Common Weakness Enumeration Top 25 2022 [3] CWE ID 089
[11] Standards Mapping - Common Weakness Enumeration Top 25 2023 [3] CWE ID 089
[12] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[13] Standards Mapping - FIPS200 SI
[14] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[15] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[16] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[17] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.4 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.5 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[18] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[19] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[20] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[21] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[22] Standards Mapping - OWASP Top 10 2010 A1 Injection
[23] Standards Mapping - OWASP Top 10 2013 A1 Injection
[24] Standards Mapping - OWASP Top 10 2017 A1 Injection
[25] Standards Mapping - OWASP Top 10 2021 A03 Injection
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 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 - Web Software Attack Mitigation
[37] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 089
[38] Standards Mapping - SANS Top 25 2010 Insecure Interaction - CWE ID 089
[39] Standards Mapping - SANS Top 25 2011 Insecure Interaction - CWE ID 089
[40] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Web Application Security Consortium Version 2.00 SQL Injection (WASC-19)
[63] Standards Mapping - Web Application Security Consortium 24 + 2 SQL Injection
desc.dataflow.dotnet.sql_injection_partiql
Abstract
透過不可信賴來源的輸入來建構的動態 PartiQL 陳述式可讓攻擊者修改陳述式的意義或是執行任意的 PartiQL 指令。
Explanation
SQL Injection：PartiQL 問題會在以下情況中發生：
1.資料從一個不可信賴的來源進入程式。
2.資料用來動態建構 PartiQL 查詢。
範例 1：以下程式碼動態地建構並執行了一個 PartiQL 查詢，該查詢可用來搜尋符合指定名稱的項目。查詢僅會顯示
此查詢欲執行以下程式碼：
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
附加條件
避免 SQL injection 攻擊的一個傳統方法為，將其視為輸入驗證的問題，只接受安全值允許清單中的字元，或是驗證並避免來自潛在惡意值的清單 (拒絕清單)。檢查允許清單是一種相當有效的方法，可強制執行嚴格的輸入驗證規則，而參數化 SQL 陳述式所需的維護較少，並且能提供更高的安全性保障。通常，對於實作拒絕清單方法，總是存在一些漏洞，所以無法有效避免 SQL injection 攻擊。例如，攻擊者可能：
- 將未列入黑名單的欄位當作目標
- 尋找方法以略過特定逸出中繼字元 (escape meta-character) 的需要
- 使用儲存的程序去隱藏插入的中繼字元
在 PartiQL 查詢中手動避開輸入特殊字元有一定作用，但無法完全保護您的應用程式免於 PartiQL Injection 攻擊。
1.資料從一個不可信賴的來源進入程式。
2.資料用來動態建構 PartiQL 查詢。
範例 1：以下程式碼動態地建構並執行了一個 PartiQL 查詢，該查詢可用來搜尋符合指定名稱的項目。查詢僅會顯示
owner 與目前已驗證使用者名稱相符的項目。
...
String userName = identity.getUser();
String itemName = apiGatewayProxyRequest.getQueryStringParameters('item');
String statement = String.format("SELECT * FROM items WHERE owner = '%s' AND itemname = '%s'", userName, itemName);
ExecuteStatementRequest executeStatementRequest = new ExecuteStatementRequest();
executeStatementRequest.setStatement(statement);
ExecuteStatementResponse executeStatementResponse = dynamoDBClient.executeStatement(executeStatementRequest);
return displayResults(executeStatementResponse.items());
...
此查詢欲執行以下程式碼：
SELECT * FROM items
WHERE owner = <userName>
AND itemname = <itemName>;
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
itemName 沒有包含單引號字元的時候，查詢才會正確執行。如果使用者名稱為 wiley 的攻擊者在 itemName 中輸入字串 name' OR 'a'='a，那麼查詢將變成以下內容：
SELECT * FROM items
WHERE owner = 'wiley'
AND itemname = 'name' OR 'a'='a';
附加條件
OR 'a'='a' 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：避免 SQL injection 攻擊的一個傳統方法為，將其視為輸入驗證的問題，只接受安全值允許清單中的字元，或是驗證並避免來自潛在惡意值的清單 (拒絕清單)。檢查允許清單是一種相當有效的方法，可強制執行嚴格的輸入驗證規則，而參數化 SQL 陳述式所需的維護較少，並且能提供更高的安全性保障。通常，對於實作拒絕清單方法，總是存在一些漏洞，所以無法有效避免 SQL injection 攻擊。例如，攻擊者可能：
- 將未列入黑名單的欄位當作目標
- 尋找方法以略過特定逸出中繼字元 (escape meta-character) 的需要
- 使用儲存的程序去隱藏插入的中繼字元
在 PartiQL 查詢中手動避開輸入特殊字元有一定作用，但無法完全保護您的應用程式免於 PartiQL Injection 攻擊。
References
[1] S. J. Friedl SQL Injection Attacks by Example
[2] P. Litwin Stop SQL Injection Attacks Before They Stop You MSDN Magazine
[3] P. Finnigan SQL Injection and Oracle, Part One Security Focus
[4] M. Howard, D. LeBlanc Writing Secure Code, Second Edition Microsoft Press
[5] PartiQL - A SQL-Compatible Query Language for Amazon DynamoDB
[6] IDS00-J. Prevent SQL Injection CERT
[7] INJECT-2: Avoid dynamic SQL Oracle
[8] Standards Mapping - Common Weakness Enumeration CWE ID 89
[9] Standards Mapping - Common Weakness Enumeration Top 25 2019 [6] CWE ID 089
[10] Standards Mapping - Common Weakness Enumeration Top 25 2020 [6] CWE ID 089
[11] Standards Mapping - Common Weakness Enumeration Top 25 2021 [6] CWE ID 089
[12] Standards Mapping - Common Weakness Enumeration Top 25 2022 [3] CWE ID 089
[13] Standards Mapping - Common Weakness Enumeration Top 25 2023 [3] CWE ID 089
[14] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[15] Standards Mapping - FIPS200 SI
[16] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[17] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[18] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[19] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.4 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.5 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[20] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[21] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4
[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 A1 Injection
[27] Standards Mapping - OWASP Top 10 2021 A03 Injection
[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 Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[37] 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
[38] 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
[39] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 089
[40] Standards Mapping - SANS Top 25 2010 Insecure Interaction - CWE ID 089
[41] Standards Mapping - SANS Top 25 2011 Insecure Interaction - CWE ID 089
[42] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[44] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[45] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[46] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[47] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[48] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3540.1 CAT I, APP3540.3 CAT II
[49] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[60] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[61] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[62] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[63] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002540 CAT I, APSC-DV-002560 CAT I
[64] Standards Mapping - Web Application Security Consortium Version 2.00 SQL Injection (WASC-19)
[65] Standards Mapping - Web Application Security Consortium 24 + 2 SQL Injection
desc.dataflow.java.sql_injection_partiql