界: Security Features

軟體安全性並非安全性軟體。我們關注驗證、Access Control、保密性、加密以及權限管理之類的主題。

Access Control: Authorization Bypass

ABAP

Abstract

不應使用使用者控制的指標呼叫根據指標 (作為參數傳遞) 跳過授權檢查的方法。

Explanation

「存取控制：規避授權」問題會在以下情況中出現：

1. 資料透過一個不可信賴的來源進入程式。

2.使用者控制的資料做為參數傳遞到方法，從而導致該方法跳過其中的授權檢查。
範例 1：以下程式碼提供使用者控制的指標給方法用以擷取員工資料：


    ...
	PARAMETERS: p_xfeld TYPE xfeld.
    ...
CALL FUNCTION 'BAPI_EMPLOYEE_GETDATA'
  EXPORTING
    employee_id      = emp_id
    authority_check  = p_xfeld
  IMPORTING
    return           = ret
  TABLES
    org_assignment   = org_data
    personal_data    = pers_data
    internal_control = con_data
    communication    = comm_data
    archivelink      = arlink. 
    ...

如果攻擊者為參數 p_xfeld 提供空白字元，則在傳回員工的個人和聯絡人資訊之前不會執行授權檢查。

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 863

[2] Standards Mapping - Common Weakness Enumeration Top 25 2023 [24] CWE ID 863

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

[4] Standards Mapping - FIPS200 AC

[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), CM-5 Access Restrictions for Change (P1), IA-5 Authenticator Management (P1), SC-3 Security Function Isolation (P1)

[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement, CM-5 Access Restrictions for Change, IA-5 Authenticator Management, SC-3 Security Function Isolation

[8] Standards Mapping - OWASP API 2023 API1 Broken Object Level Authorization

[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.4.2 Access Control Architectural Requirements (L2 L3), 1.4.4 Access Control Architectural Requirements (L2 L3), 1.4.2 Access Control Architectural Requirements (L2 L3), 1.4.4 Access Control Architectural Requirements (L2 L3)

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

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

[12] Standards Mapping - OWASP Top 10 2004 A2 Broken Access Control

[13] Standards Mapping - OWASP Top 10 2007 A4 Insecure Direct Object Reference

[14] Standards Mapping - OWASP Top 10 2010 A4 Insecure Direct Object References

[15] Standards Mapping - OWASP Top 10 2013 A5 Security Misconfiguration

[16] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration

[17] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.2

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.5.4

[20] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8

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

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

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

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

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

[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 2011 Risky Resource Management - CWE ID 676

[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-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-002360 CAT II

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

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

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

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

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

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

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

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

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

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

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

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

[50] 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-001795 CAT II, APSC-DV-002360 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001410 CAT II, APSC-DV-001795 CAT II, APSC-DV-002360 CAT II

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

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

desc.dataflow.abap.access_control_authorization_bypass