界: Input Validation and Representation

输入验证与表示问题是由元字符、交替编码和数字表示引起的。安全问题源于信任输入。这些问题包括：“Buffer Overflows”、“Cross-Site Scripting”攻击、“SQL Injection”等其他问题。

OGNL Expression Injection

Java/JSP

Abstract

计算未验证的 OGNL 表达式可能导致执行远程代码。

Explanation

对象图导航语言 (OGNL) 是一种针对 Java 的开源表达式语言 (EL)，它允许在 Struts 2 Value Stack 上下文中计算 EL 表达式。允许根据 Value Stack 计算未经验证的表达式，这将使攻击者有权修改系统变量或执行任意代码。

在以下示例中，应用程序使用由用户控制且未经验证的数据创建 OGNL 表达式的计算：


OgnlContext ctx = new OgnlContext();
String expression = request.getParameter("input");
Object expr = Ognl.parseExpression(expression);
Object value = Ognl.getValue(expr, ctx, root);
System.out.println("Value: " + value);

攻击者可以提交以下表达式以在应用程序服务器环境中执行任意代码：


  (#rt = @java.lang.Runtime@getRuntime(),#rt.exec("calc.exe"))

References

[1] Apache Commons OGNL - Object-Graph Navigation Library

[2] Meder Kydyraliev Milking a horse or executing remote code in modern Java frameworks

[3] Standards Mapping - Common Weakness Enumeration CWE ID 94, CWE ID 95

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

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

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

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

[8] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754

[9] Standards Mapping - FIPS200 SI

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

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

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

[13] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.2.4 Sanitization and Sandboxing Requirements (L1 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)

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

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

[16] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws

[17] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws

[18] Standards Mapping - OWASP Top 10 2010 A1 Injection

[19] Standards Mapping - OWASP Top 10 2013 A1 Injection

[20] Standards Mapping - OWASP Top 10 2017 A1 Injection

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

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2

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

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

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

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

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

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

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

[31] 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

[32] 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

[33] Standards Mapping - SANS Top 25 2009 Risky Resource Management - CWE ID 094

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

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

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

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

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

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

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

[41] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I

[42] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I

[44] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I

[45] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I

[46] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I

[47] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I

[48] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I

[49] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I

[50] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I

[51] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I

[52] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I

[53] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I

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

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

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

desc.dataflow.java.ognl_expression_injection