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。

Intent Manipulation

Abstract
通过允许用户输入来控制 Intent 参数，使得攻击者可以控制后续活动的行为。
Explanation
当满足以下两个条件时，就会发生意图操控问题：

1. 攻击者能够指定 Android Intent 的操作、类名或组件。

例如，攻击者能够指定类名或组件来处理此意图。

2. 攻击者可以通过指定操作、类名或组件来获取某种权限，而这种权限在一般情况下是不可能获得的。

例如，程序可能会允许攻击者将敏感信息传输到设备上的第三方软件中。

示例 1：以下代码使用从 HTTP 请求中读取的参数来设置意图的类名。


String arg = request.getParameter("arg");
...
Intent intent = new Intent();
...
intent.setClassName(arg);
ctx.startActivity(intent);
...
References
[1] Intent
[2] Standards Mapping - Common Weakness Enumeration CWE ID 99
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-002754
[4] Standards Mapping - FIPS200 SI
[5] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[8] Standards Mapping - OWASP Mobile 2014 M8 Security Decisions Via Untrusted Inputs
[9] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[10] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-CODE-4, MASVS-PLATFORM-1
[11] Standards Mapping - OWASP Top 10 2004 A1 Unvalidated Input
[12] Standards Mapping - OWASP Top 10 2007 A4 Insecure Direct Object Reference
[13] Standards Mapping - OWASP Top 10 2010 A4 Insecure Direct Object References
[14] Standards Mapping - OWASP Top 10 2013 A4 Insecure Direct Object References
[15] Standards Mapping - OWASP Top 10 2017 A5 Broken Access Control
[16] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.1
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.4
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[25] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection, Control Objective 5.4 - Authentication and Access Control
[26] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective 5.4 - Authentication and Access Control, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[27] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective 5.4 - Authentication and Access Control, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.2.3 - Web Software Access Controls, Control Objective C.3.2 - Web Software Attack Mitigation
[28] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3600 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3600 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3600 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3600 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3600 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3600 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3600 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[36] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[49] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.java.intent_manipulation