계: Environment

이 섹션에는 소스 코드 외부에 있지만 제작 중인 제품의 보안에는 여전히 중요한 내용이 모두 포함되어 있습니다. 이 섹션에서 다루는 문제들은 소스 코드와 직접적으로 관련이 없기 때문에 나머지 섹션과 분리했습니다.

Weak XML Schema: Undefined Namespace

Universal

Abstract

<any> 요소에서 ##any의 네임스페이스를 지정하면 스키마가 스키마에 명시적으로 정의된 것 이상의 요소를 허용하여 악성 문서를 더 쉽게 만들 수 있음을 의미합니다.

Explanation

요소 네임스페이스를 제한하지 않는 스키마에서는 임의의 요소를 유효한 문서에 포함할 수 있습니다. 그러면 적용된 표준을 따르지 않는 태그를 문서의 나머지 부분에 포함할 수 있으므로 공격자가 XML Injection과 같은 공격을 더 쉽게 수행할 수 있게 됩니다.

다음 스키마는 제한 없는 수의 네임스페이스를 허용합니다.


<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" >
 <xs:element name='foo'>
  <xs:complexType>
   <xs:sequence>
     <xs:any namespace='##any' />
   </xs:sequence>
  </xs:complexType>
 </xs:element>
</xs:schema>

References

[1] XML Schema Part 1: Structures Second Edition W3C

[2] Standards Mapping - Common Weakness Enumeration CWE ID 20

[3] Standards Mapping - Common Weakness Enumeration Top 25 2021 [4] CWE ID 020

[4] Standards Mapping - Common Weakness Enumeration Top 25 2022 [4] CWE ID 020

[5] Standards Mapping - Common Weakness Enumeration Top 25 2023 [6] CWE ID 020

[6] Standards Mapping - Common Weakness Enumeration Top 25 2024 [12] CWE ID 020

[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754

[8] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data

[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)

[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation

[11] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration

[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.1.3 Input Validation Requirements (L1 L2 L3), 5.1.4 Input Validation Requirements (L1 L2 L3)

[13] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection

[14] Standards Mapping - OWASP Mobile 2024 M8 Security Misconfiguration

[15] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4

[16] Standards Mapping - OWASP Top 10 2004 A1 Unvalidated Input

[17] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws

[18] Standards Mapping - OWASP Top 10 2010 A1 Injection

[19] Standards Mapping - OWASP Top 10 2013 A1 Injection

[20] Standards Mapping - OWASP Top 10 2017 A1 Injection

[21] Standards Mapping - OWASP Top 10 2021 A03 Injection

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.1

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1

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

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4

[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection

[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection

[34] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 020

[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 4.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[44] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[45] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[46] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[47] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[48] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[49] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[50] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[51] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[52] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[53] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[54] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[55] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[56] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002550 CAT I, APSC-DV-002560 CAT I

[57] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)

desc.config.xml.weak_xml_schema_undefined_namespace