CVE-2024-31339
📋 TL;DR
This CVE describes a use-after-free vulnerability in Android's StatsService that could allow local privilege escalation without user interaction. Attackers could exploit memory corruption to gain elevated privileges on affected Android devices. This affects Android devices running vulnerable versions of the StatsD module.
💻 Affected Systems
- Android OS
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise with root/system-level access, allowing installation of persistent malware, data theft, and bypassing of security controls.
Likely Case
Local privilege escalation to gain elevated permissions for malicious activities like accessing protected data or installing unauthorized applications.
If Mitigated
Limited impact with proper patch management and security controls, though device integrity could still be compromised if exploited.
🎯 Exploit Status
Exploitation requires local access and understanding of Android's StatsService memory management. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Patch Level July 2024 or later
Vendor Advisory: https://source.android.com/security/bulletin/2024-07-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Apply the July 2024 or later security patch. 3. Reboot the device after installation completes.
🔧 Temporary Workarounds
Restrict local app installations
androidPrevent installation of untrusted applications that could exploit this vulnerability
adb shell settings put secure install_non_market_apps 0
Disable unnecessary system services
androidReduce attack surface by disabling unused system services
adb shell pm disable-user --user 0 com.android.statsservice
🧯 If You Can't Patch
- Implement strict application allowlisting to prevent malicious apps from running
- Use mobile device management (MDM) solutions to enforce security policies and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version > Security patch level. If date is before July 2024, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows July 2024 or later. Check that StatsService is functioning normally after patch.📡 Detection & Monitoring
Log Indicators:
- Unusual StatsService crashes or memory access violations in system logs
- Unexpected privilege escalation attempts in security logs
Network Indicators:
- Unusual local process communication patterns
SIEM Query:
source="android_system" AND (event="use_after_free" OR process="StatsService" AND severity="critical")🔗 References
- https://android.googlesource.com/platform/packages/modules/StatsD/+/795a0da721992432cae20fc9be21bcbce318bf5a
- https://source.android.com/security/bulletin/2024-07-01
- https://android.googlesource.com/platform/packages/modules/StatsD/+/795a0da721992432cae20fc9be21bcbce318bf5a
- https://source.android.com/security/bulletin/2024-07-01
