Reino: Security Features

La seguridad de un software no es un software de seguridad. Nos preocupamos de cuestiones como la autenticación, el control de acceso, la confidencialidad, la criptografía y la gestión de privilegios.

Permission Manipulation: Logging

C#/VB.NET/ASP.NET

Abstract

Permitir que la entrada del usuario altere directamente los permisos para determinar la auditoría puede permitir que un atacante oculte su actividad.

Explanation

Los errores de registro de manipulación de permisos se producen cuando un usuario malintencionado puede modificar un valor usado para determinar los permisos en una aplicación que se usa para indicar lo que se registra. En Windows existen listas de control de acceso del sistema (SACL) que se usan para determinar los usuarios y los grupos que se deben auditar con el objetivo de ver si el acceso se realiza correctamente, o si se produce un error en los recursos. Si un usuario malintencionado puede controlar las entradas de control de acceso (ACE) almacenadas en estas o la configuración de acceso, podrá deshabilitar la auditoría de su cuenta y por lo tanto dificultará que se determine lo que ha hecho durante el ataque.

Ejemplo 1: El código siguiente permite a un usuario especificar las operaciones que generarán un registro de auditoría.


...
CrytoKeyAuditRule auditRule = new CryptoKeyAuditRule(IdRef, (CryptoKeyRights) input, AuditFlags.Success); 
...

En este escenario, si el usuario puede controlar la input, podrá especificar el tipo de operación que se registrará. Si el usuario puede manipular esto para CryptoKeyRights.Delete, podrá leer la clave de cifrado sin que se lo registre, por lo que no quedará constancia de que un usuario malintencionado haya robado las claves de cifrado.

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 264, CWE ID 732

[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [15] CWE ID 732

[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [16] CWE ID 732

[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [22] CWE ID 732

[5] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-001813, CCI-002165

[6] Standards Mapping - FIPS200 AC

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

[8] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1), AU-9 Protection of Audit Information (P1), CM-5 Access Restrictions for Change (P1)

[9] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement, AU-9 Protection of Audit Information, CM-5 Access Restrictions for Change

[10] Standards Mapping - OWASP API 2023 API3 Broken Object Property Level Authorization

[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 4.3.3 Other Access Control Considerations (L2 L3), 4.1.3 General Access Control Design (L1 L2 L3), 4.1.5 General Access Control Design (L1 L2 L3), 4.2.1 Operation Level Access Control (L1 L2 L3), 7.3.3 Log Protection Requirements (L2 L3)

[12] Standards Mapping - OWASP Mobile 2014 M8 Security Decisions Via Untrusted Inputs

[13] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation

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

[15] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control

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

[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1

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

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

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

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

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

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

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

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

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

[27] 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

[28] Standards Mapping - SANS Top 25 2009 Porous Defenses - CWE ID 732

[29] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 732

[30] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 732

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

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

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

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

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

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

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

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

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

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

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

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

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

[44] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001280 CAT II, APSC-DV-001290 CAT II, APSC-DV-001300 CAT II, APSC-DV-001310 CAT II, APSC-DV-001320 CAT II, APSC-DV-001330 CAT II, APSC-DV-001410 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001280 CAT II, APSC-DV-001290 CAT II, APSC-DV-001300 CAT II, APSC-DV-001310 CAT II, APSC-DV-001320 CAT II, APSC-DV-001330 CAT II, APSC-DV-001410 CAT II

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

desc.dataflow.dotnet.permission_manipulation_logging