Access Control: SecurityManager Bypass

Java/JSP

Abstract

針對不受信賴的程式碼叫用此函數可讓攻擊者存取受限的封包，並使其能夠執行任意程式碼。

Explanation

在利用使用即時呼叫者的類別載入器檢查執行工作的 Java API 時應格外小心。這些 API 會略過 SecurityManager 檢查，確保執行鏈中的所有呼叫者都已被授與必要的安全權限。僅針對即時呼叫者的類別載入器執行存取檢查會導致權限提升問題，而執行鏈中的某些呼叫者無須必要權限就能夠存取資源。因此，不應針對不受信賴的程式碼叫用這些 API，因為這些程式碼會危害系統安全。

來自不受信賴之來源或位於不受信賴之環境中的 Java Applet (具備存取這些 API 的權限) 可以執行惡意程式碼並危害系統安全。

References

[1] Secure Coding Guidelines for the Java Programming Language, Version 4.0

[2] CVE 2012-1682

[3] CVE 2012-4681

[4] SEC05-J. Do not use reflection to increase accessibility of classes, methods, or fields CERT

[5] ACCESS-8: Safely invoke standard APIs that bypass SecurityManager checks depending on the immediate caller's class loader Oracle

[6] ACCESS-9: Safely invoke standard APIs that perform tasks using the immediate caller's class loader instance Oracle

[7] ACCESS-10: Be aware of standard APIs that perform Java language access checks against the immediate caller Oracle

[8] ACCESS-11: Be aware java.lang.reflect.Method.invoke is ignored for checking the immediate caller Oracle

[9] Standards Mapping - CIS Azure Kubernetes Service Benchmark 3

[10] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 2

[11] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 2

[12] Standards Mapping - CIS Google Kubernetes Engine Benchmark normal

[13] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-001084, CCI-001764, CCI-001774, CCI-002165

[14] Standards Mapping - General Data Protection Regulation (GDPR) Access Violation

[15] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1)

[16] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement

[17] Standards Mapping - OWASP Top 10 2013 A7 Missing Function Level Access Control

[18] Standards Mapping - OWASP Top 10 2017 A5 Broken Access Control

[19] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control

[20] Standards Mapping - OWASP Mobile 2014 M5 Poor Authorization and Authentication

[21] Standards Mapping - OWASP Mobile 2024 M3 Insecure Authentication/Authorization

[22] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-AUTH-1

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4

[28] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.4 - Authentication and Access Control

[29] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.4 - Authentication and Access Control

[30] 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

[31] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[32] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[33] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[35] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[36] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002360 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001410 CAT II, APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-001520 CAT II, APSC-DV-001530 CAT II, APSC-DV-001540 CAT I, APSC-DV-002360 CAT II

[45] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Authorization (WASC-02)

[46] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authorization

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