界: Code Quality

代码质量不佳会导致不可预测的行为。对于用户来说，通常表现为可用性差。对于攻击者来说，提供了以意外方式对系统施加压力的机会。

Intent Manipulation: Mutable Pending Intent

Abstract
检测到 PendingIntent，其标记值设置为 FLAG_MUTABLE。使用标记值 FLAG_MUTABLE 创建的待定意图很容易在下游设置未指定的 Intent 字段，这样会修改 Intent 的容量并使系统容易受到攻击。
Explanation
允许在创建 PendingIntent 后修改其底层 Intent 可能会使系统容易受到攻击。这主要取决于底层 Intent 的整体功能。在大多数情况下，最佳实践是通过将 PendingIntent 标记设置为 FLAG_IMMUTABLE 来防止发生潜在问题。

示例 1：以下代码包含使用标记值 FLAG_MUTABLE 创建的 PendingIntent。


...
val intent_flag_mut = Intent(Intent.ACTION_GTALK_SERVICE_DISCONNECTED, Uri.EMPTY, this, DownloadService::class.java)
val flag_mut = PendingIntent.FLAG_MUTABLE

val pi_flagmutable = PendingIntent.getService(
    this,
    0,
    intent_flag_mut,
    flag_mut
)
...
References
[1] Remediation for Implicit PendingIntent Vulnerability
[2] Standards Mapping - CIS Azure Kubernetes Service Benchmark 1.0
[3] Standards Mapping - CIS Microsoft Azure Foundations Benchmark complete
[4] Standards Mapping - CIS Amazon Elastic Kubernetes Service Benchmark 4.0
[5] Standards Mapping - CIS Amazon Web Services Foundations Benchmark 1
[6] Standards Mapping - CIS Google Cloud Computing Platform Benchmark partial
[7] Standards Mapping - CIS Google Kubernetes Engine Benchmark integrity
[8] Standards Mapping - CIS Kubernetes Benchmark partial
[9] Standards Mapping - Common Weakness Enumeration CWE ID 99
[10] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094
[11] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[12] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1)
[13] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection
[14] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[15] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.1
[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.4
[17] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8
[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8
[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8
[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8
[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[23] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002400 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002400 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002400 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002400 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002400 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002400 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002400 CAT II
[37] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002400 CAT II
[38] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002400 CAT II
[39] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002400 CAT II
[40] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002400 CAT II
[41] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002400 CAT II
[42] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002400 CAT II
[43] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002400 CAT II
[44] Standards Mapping - Web Application Security Consortium Version 2.00 Denial of Service (WASC-10)
[45] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.controlflow.java.intent_manipulation_mutable_pending_intent