CVE-2024-31326
📋 TL;DR
This CVE describes a logic error in Android's policy migration code that prevents proper execution, allowing local privilege escalation without requiring user interaction or additional execution privileges. It affects Android devices running vulnerable versions, potentially enabling attackers to gain elevated system access.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker gains full system-level privileges, potentially compromising the entire device, accessing sensitive data, installing persistent malware, or bypassing security controls.
Likely Case
Local attackers escalate privileges to perform unauthorized actions, access restricted data, or install malicious applications with elevated permissions.
If Mitigated
With proper patching and security controls, the risk is minimized to acceptable levels with no practical exploitation.
🎯 Exploit Status
Exploitation requires local access but no user interaction. The logic error in policy migration code must be triggered through specific conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Patch Level June 2024 or later
Vendor Advisory: https://source.android.com/security/bulletin/2024-06-01
Restart Required: Yes
Instructions:
1. Check current Android security patch level in Settings > About phone > Android version. 2. Apply the June 2024 Android security update via Settings > System > System update. 3. Reboot device after update installation.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to devices through device management policies and access controls
🧯 If You Can't Patch
- Implement strict device access controls and monitoring for suspicious privilege escalation attempts
- Use mobile device management (MDM) solutions to enforce security policies and isolate vulnerable devices
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version. If patch level is before June 2024, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows June 2024 or later in Settings > About phone > Android version.📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation events in system logs
- Policy migration failures or anomalies
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
Search for privilege escalation events or policy migration errors in Android system logs🔗 References
- https://android.googlesource.com/platform/frameworks/base/+/736462a777d0a0e1258bd7ab80d6e352ef797669
- https://android.googlesource.com/platform/frameworks/base/+/f1eb8e719dfbe15a38d40af0a73ead207eba9389
- https://source.android.com/security/bulletin/2024-06-01
- https://android.googlesource.com/platform/frameworks/base/+/736462a777d0a0e1258bd7ab80d6e352ef797669
- https://android.googlesource.com/platform/frameworks/base/+/f1eb8e719dfbe15a38d40af0a73ead207eba9389
- https://source.android.com/security/bulletin/2024-06-01
