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.

ASP.NET Misconfiguration: Missing HMAC Signature

C#/VB.NET/ASP.NET

Abstract

이 응용 프로그램은 암호화를 사용하도록 구성된 경우 ASP.NET에서 수행하는 서명 확인을 비활성화하는 속성을 설정합니다.

Explanation

기본적으로 ASP.NET은 ViewState, FormsAuth cookies 및 ScriptResource.axd URL과 같은 페이로드를 해독하기 전에 암호화 서명을 내부에서 검증하고 추가 처리를 위해 이러한 값을 응용 프로그램에 전달합니다. 그러나 aspnet:UseLegacyEncryption 설정을 사용하여 페이로드 해독 전에 암호화 서명 확인을 비활성화하도록 이 기능을 수정할 수 있습니다. 그러면 악성 클라이언트에서 암호화된 데이터를 해독, 위조 또는 변조할 수 있습니다.

예제 1: 다음 예에서, aspnet:UseLegacyEncryption이 true로 설정됩니다.


...
  <appSettings>
    <add key="aspnet:UseLegacyEncryption" value="true" />
  </appSettings>
...

References

[1] ASP.NET appSettings Element Microsoft

[2] Standards Mapping - Common Weakness Enumeration CWE ID 345

[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002418, CCI-002420, CCI-002421, CCI-002422

[4] Standards Mapping - FIPS200 CM, SC

[5] Standards Mapping - General Data Protection Regulation (GDPR) Insufficient Data Protection

[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-8 Transmission Confidentiality and Integrity (P1)

[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-8 Transmission Confidentiality and Integrity

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

[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 3.5.3 Token-based Session Management (L2 L3), 13.2.6 RESTful Web Service Verification Requirements (L2 L3)

[10] Standards Mapping - OWASP Mobile 2014 M4 Unintended Data Leakage

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

[12] Standards Mapping - OWASP Top 10 2004 A10 Insecure Configuration Management

[13] Standards Mapping - OWASP Top 10 2007 A9 Insecure Communications

[14] Standards Mapping - OWASP Top 10 2010 A9 Insufficient Transport Layer Protection

[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 4.1, Requirement 6.5.10

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 4.1, Requirement 6.3.1.4, Requirement 6.5.9

[20] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 4.1, Requirement 6.5.4

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 4.1, Requirement 6.5.4

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 4.1, Requirement 6.5.4

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 4.1, Requirement 6.5.4

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 4.1, Requirement 6.5.4

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 4.2.1, Requirement 6.2.4

[26] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7.1 - Use of Cryptography

[27] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design

[28] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 6.2 - Sensitive Data Protection, Control Objective 7.1 - Use of Cryptography, Control Objective B.2.3 - Terminal Software Design, Control Objective C.4.1 - Web Software Communications

[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II

[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II

[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II

[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II

[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II

[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II

[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002440 CAT I, APSC-DV-002450 CAT II, APSC-DV-002460 CAT II, APSC-DV-002470 CAT II

[51] Standards Mapping - Web Application Security Consortium Version 2.00 Application Misconfiguration (WASC-15)

[52] Standards Mapping - Web Application Security Consortium 24 + 2 Insufficient Authentication

desc.configuration.dotnet.asp_dotnet_misconfiguration_missing_hmac_signature