Reino: Input Validation and Representation

Problemas de validação e representação da entrada são causados por metacaracteres, codificações alternativas e representações numéricas. Confiar na entrada resulta em problemas de segurança. Os problemas incluem: “Buffer Overflows”, ataques de “Cross-Site Scripting”, “SQL Injection”, entre outros.

Dynamic Code Evaluation: Code Manipulation

Java/JSP

Abstract

Permitir que a entrada do usuário não validada influencie o ambiente de tempo de execução do código dinamicamente executado pode permitir que invasores executem código mal-intencionado.

Explanation

Muitas linguagens de programação modernas permitem a interpretação dinâmica de instruções de origem. Com essa capacidade, os programadores podem executar operações dinâmicas com base na entrada recebida do usuário. Vulnerabilidades de manipulação de código ocorrem quando o programador permite que alguns dados fornecidos pelo usuário alterem um aspecto do ambiente de tempo de execução de um código dinamicamente executado. Sem a devida validação, um usuário pode especificar operações não pretendidas pelo programador.

Exemplo: Neste exemplo, o aplicativo recupera o escopo de execução de scripts do aplicativo 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);
...

O programa se comporta corretamente quando o parâmetro page_scope é o nome de usuário esperado. No entanto, se um invasor especificar o valor para GLOBAL_SCOPE, as operações terão acesso a todos os atributos dentro de todos os mecanismos criados pelo mesmo ScriptEngine.

References

[1] Standards Mapping - CIS Azure Kubernetes Service Benchmark 4

[2] Standards Mapping - CIS Microsoft Azure Foundations Benchmark complete

[3] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 4

[4] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 4

[5] Standards Mapping - CIS Google Cloud Computing Platform Benchmark complete

[6] Standards Mapping - CIS Google Kubernetes Engine Benchmark integrity

[7] Standards Mapping - CIS Kubernetes Benchmark complete

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

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

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

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

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

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

[14] Standards Mapping - FIPS200 SI

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

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

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

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

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

[20] 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)

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

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

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

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

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

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

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

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

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

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

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

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

[33] 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

[34] 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[58] 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

[59] 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