Reino: Input Validation and Representation

Los problemas de validación y representación de entradas están causados por metacaracteres, codificaciones alternativas y representaciones numéricas. Los problemas de seguridad surgen de entradas en las que se confía. Estos problemas incluyen: «desbordamientos de búfer», ataques de «scripts de sitios», "SQL injection" y muchas otras acciones.

Dynamic Code Evaluation: Code Manipulation

Java/JSP

Abstract

Permitir que la entrada de usuario no válida influya en el entorno de tiempo de ejecución de código ejecutado dinámicamente podría permitir a los atacantes ejecutar código malintencionado.

Explanation

Muchos lenguajes modernos permiten una interpretación dinámica de las instrucciones de código fuente. Esta capacidad permite a los programadores ejecutar operaciones dinámicas basadas en la entrada recibida del usuario. Las vulnerabilidades de manipulación de código se producen cuando el programador permite que algunos datos proporcionados por el usuario modifiquen un aspecto del entorno de tiempo de ejecución de código ejecutado dinámicamente. Sin una validación adecuada, un usuario podría especificar operaciones que el programador no tenía previstas.

Ejemplo 1: En este ejemplo, la aplicación recupera el ámbito de ejecución del script de la aplicación web.


...
   ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
   ScriptEngine scriptEngine = scriptEngineManager.getEngineByExtension("js");
   ScriptContext newContext = new SimpleScriptContext();
   Bindings engineScope = newContext.getBindings(request.getParameter("userName"));

   userOps = request.getParameter("operation");
   Object result = scriptEngine.eval(userOps,newContext);
...

El programa se comporta correctamente cuando el parámetro page_scope es el nombre de usuario previsto. Sin embargo, si un atacante especifica el valor para GLOBAL_SCOPE, las operaciones tendrán acceso a todos los atributos de todos los motores creados por el mismo ScriptEngine.

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 94, CWE ID 494

[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [18] CWE ID 094

[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [17] CWE ID 094

[4] Standards Mapping - Common Weakness Enumeration Top 25 2022 [25] CWE ID 094

[5] Standards Mapping - Common Weakness Enumeration Top 25 2023 [23] CWE ID 094

[6] Standards Mapping - Common Weakness Enumeration Top 25 2024 [11] CWE ID 094

[7] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001764, CCI-001774, CCI-002754

[8] Standards Mapping - FIPS200 SI

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

[10] Standards Mapping - NIST Special Publication 800-53 Revision 4 CM-7 Least Functionality (P1), SI-10 Information Input Validation (P1)

[11] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-7 Least Functionality, SI-10 Information Input Validation

[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.14.2 Configuration Architectural Requirements (L2 L3), 5.2.5 Sanitization and Sandboxing Requirements (L1 L2 L3), 5.2.8 Sanitization and Sandboxing Requirements (L1 L2 L3), 5.3.6 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 10.3.2 Deployed Application Integrity Controls (L1 L2 L3), 12.3.3 File Execution Requirements (L1 L2 L3), 14.2.3 Dependency (L1 L2 L3)

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

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

[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 2021 A03 Injection

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

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

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

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

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

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

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

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

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

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

[28] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation

[29] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation

[30] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 116, Risky Resource Management - CWE ID 094

[31] Standards Mapping - SANS Top 25 2010 Risky Resource Management - CWE ID 494

[32] Standards Mapping - SANS Top 25 2011 Risky Resource Management - CWE ID 494

[33] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3570 CAT I

[34] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3570 CAT I

[35] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3570 CAT I

[36] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3570 CAT I

[37] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3570 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3570 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3570 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[41] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[42] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[44] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[45] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[46] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[47] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[48] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[49] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[50] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[51] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[52] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I

[53] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002530 CAT II, APSC-DV-002560 CAT I

[54] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002530 CAT II, APSC-DV-002560 CAT I

[55] Standards Mapping - Web Application Security Consortium Version 2.00 Insufficient Process Validation (WASC-40), Improper Input Handling (WASC-20)

desc.dataflow.java.dynamic_code_evaluation_code_manipulation