界: Errors
錯誤和錯誤處理代表一種 API 類別。與錯誤處理相關的錯誤非常普遍,所以它們應該擁有自己的特殊領域。如同「API 濫用」,有兩種方法可以引入與錯誤相關的安全漏洞:最常見的一種方法是不當處理錯誤 (或根本沒有處理)。第二種是產生錯誤,這些錯誤不是給的資訊太多 (給可能的攻擊者),就是問題難以處理。
Poor Error Handling: Unhandled SSL Exception
Abstract
若無法明確處理 SSL 異常,可能會使應用程式忽略不預期的狀態與情況。
Explanation
在以下情況中會出現 Unhandled SSL Exception 弱點:
1. 拋出特定 SSL 的異常。
2. 沒有明確地處理異常。
特定 SSL 的異常
幾乎每一個對軟體系統嚴重的攻擊都是從破解程式設計師的假設開始的。在攻擊後,程式設計師所建立的假設似乎是脆弱且拙劣的,但在攻擊之前,許多程式設計師會在午休結束之前為他們的假設進行辯護。
在程式碼中很容易發現的兩個可疑假設為:「此操作永遠都不會失敗」以及「即使此操作失敗也沒有關係」。因此當程式設計師未擷取到操作可能拋出的異常時,已暗示他們是以其中一個假設來執行操作。
1. 拋出特定 SSL 的異常。
2. 沒有明確地處理異常。
特定 SSL 的異常
javax.net.ssl.SSLHandshakeException
、javax.net.ssl.SSLKeyException
和 javax.net.ssl.SSLPeerUnverifiedException
都會傳達與 SSL 連線相關的重要錯誤。如果沒有明確地處理這些錯誤,連線可能會處於一種非預期且潛在不安全的狀態。 幾乎每一個對軟體系統嚴重的攻擊都是從破解程式設計師的假設開始的。在攻擊後,程式設計師所建立的假設似乎是脆弱且拙劣的,但在攻擊之前,許多程式設計師會在午休結束之前為他們的假設進行辯護。
在程式碼中很容易發現的兩個可疑假設為:「此操作永遠都不會失敗」以及「即使此操作失敗也沒有關係」。因此當程式設計師未擷取到操作可能拋出的異常時,已暗示他們是以其中一個假設來執行操作。
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 248
[2] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001312, CCI-001314, CCI-003272
[3] Standards Mapping - FIPS200 AU
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SA-15 Development Process and Standards and Tools (P2), SC-24 Fail in Known State (P1), SI-11 Error Handling (P2)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SA-15 Development Process and Standards and Tools, SC-24 Fail in Known State, SI-11 Error Handling
[7] Standards Mapping - OWASP Application Security Verification Standard 4.0 7.4.2 Error Handling (L2 L3)
[8] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-NETWORK-1
[9] Standards Mapping - OWASP Top 10 2004 A7 Improper Error Handling
[10] Standards Mapping - OWASP Top 10 2007 A6 Information Leakage and Improper Error Handling
[11] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.7
[12] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.2, Requirement 6.5.6
[13] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.5
[14] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.5
[15] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.5
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.5
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.5
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[19] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.6 - Sensitive Data Retention
[20] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.6 - Sensitive Data Retention, Control Objective B.3.2 - Terminal Software Attack Mitigation
[21] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.6 - Sensitive Data Retention, Control Objective B.3.2 - Terminal Software Attack Mitigation
[22] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3120 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3120 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3120 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3120 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3120 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3120 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3120 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002310 CAT I, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002310 CAT I, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II, APSC-DV-003235 CAT II
[44] Standards Mapping - Web Application Security Consortium Version 2.00 Information Leakage (WASC-13)
[45] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage
desc.structural.java.poor_error_handling_unhandled_ssl_exception