계: Security Features

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Access Control: Authorization Bypass

ABAP

Abstract

매개 변수로 전달되는 표시기를 기준으로 권한 부여 검사를 건너뛰는 메서드는 사용자 제어 표시기를 사용하여 호출하면 안 됩니다.

Explanation

Access Control: 권한 부여 무시 문제는 다음과 같은 경우에 발생합니다.

1. 신뢰할 수 없는 소스를 통해 데이터가 프로그램에 입력됩니다.

2. 사용자 제어 데이터가 메서드에 매개 변수로 전달되어 해당 메서드가 내부의 권한 부여 검사를 건너뜁니다.
예제 1: 다음 코드는 직원 데이터를 가져오는 메서드에 사용자 제어 표시기를 제공합니다.


    ...
	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. 
    ...

공격자가 p_xfeld 매개 변수에 공백을 제공하면 직원의 개인 정보 및 연락처 정보를 반환하기 전에 권한 부여 검사가 수행되지 않습니다.

References

[1] Standards Mapping - CIS Azure Kubernetes Service Benchmark 1

[2] Standards Mapping - CIS Microsoft Azure Foundations Benchmark partial

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

[4] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 4

[5] Standards Mapping - CIS Google Kubernetes Engine Benchmark integrity

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

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

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

[9] Standards Mapping - FIPS200 AC

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

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

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

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

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

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

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

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

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

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

[20] 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)

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

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

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

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

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

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

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

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

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

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

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

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

[33] 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

[34] Standards Mapping - SANS Top 25 2011 Risky Resource Management - CWE ID 676

[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

[37] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I

[41] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I

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

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

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

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

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

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

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

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

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

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

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

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

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

[55] 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

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

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

desc.dataflow.abap.access_control_authorization_bypass