Reino: Environment

Esta seção contém tudo o que fica fora do código-fonte, porém que é essencial para a segurança do produto que está sendo criado. Como os problemas tratados neste domínio não são diretamente relacionados com o código-fonte, nós o separamos dos demais domínios.

ASP.NET Misconfiguration: Missing HMAC Signature

C#/VB.NET/ASP.NET

Abstract

O aplicativo define uma propriedade que desativa a verificação de assinatura realizada pelo ASP.NET quando configurado para usar criptografia.

Explanation

Por padrão, o ASP.NET valida internamente as assinaturas criptográficas antes de descriptografar cargas úteis, como ViewState, FormsAuth cookies e URLs ScriptResource.axd e passa esses valores para o aplicativo para processamento posterior. No entanto, essa funcionalidade pode ser modificada usando a configuração aspnet:UseLegacyEncryption para desativar a verificação de assinatura criptográfica antes de descriptografar cargas úteis. Isso pode permitir que um cliente mal-intencionado descriptografe, falsifique ou adultere dados criptografados.

Exemplo 1: No exemplo a seguir, aspnet:UseLegacyEncryption está definido como true.


...
  <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