Kingdom: Input Validation and Representation
Input validation and representation problems ares caused by metacharacters, alternate encodings and numeric representations. Security problems result from trusting input. The issues include: "Buffer Overflows," "Cross-Site Scripting" attacks, "SQL Injection," and many others.
Intent Manipulation
Abstract
Allowing user input to control Intent parameters could enable an attacker to control the behavior of the subsequent activity.
Explanation
An intent manipulation issue occurs when the following two conditions are met:
1. An attacker is able to specify the action, classname, or component of an Android Intent.
For example, an attacker may be able to specify the classname or the component to handle the intent.
2. By specifying the action, classname, or component, the attacker gains a capability that would not otherwise be permitted.
For example, the program may give the attacker the ability to transmit sensitive information to a third-party software on the device.
Example 1: The following code uses an argument read from an HTTP request to set the classname of an intent.
1. An attacker is able to specify the action, classname, or component of an Android Intent.
For example, an attacker may be able to specify the classname or the component to handle the intent.
2. By specifying the action, classname, or component, the attacker gains a capability that would not otherwise be permitted.
For example, the program may give the attacker the ability to transmit sensitive information to a third-party software on the device.
Example 1: The following code uses an argument read from an HTTP request to set the classname of an intent.
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 Data Security Standard Version 4.0.1 Requirement 6.2.4
[26] 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
[27] 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
[28] 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
[29] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3600 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3600 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3600 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3600 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3600 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3600 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3600 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002560 CAT I
[37] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002560 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002560 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002560 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002560 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002560 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002560 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002560 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.java.intent_manipulation