CVE-2024-0033
📋 TL;DR
This CVE describes a heap buffer overflow vulnerability in Android's ashmem-dev.cpp that allows local privilege escalation without user interaction. Attackers can exploit this to gain elevated privileges on affected Android devices. All Android devices running vulnerable versions are potentially affected.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to execute arbitrary code with kernel privileges, potentially installing persistent malware or accessing all user data.
Likely Case
Local privilege escalation allowing attackers to bypass application sandboxing and access sensitive data or system resources they shouldn't have access to.
If Mitigated
Limited impact with proper security controls, potentially contained by SELinux policies and other Android security features.
🎯 Exploit Status
Exploitation requires local access but no user interaction. The heap buffer overflow in ashmem-dev.cpp can be triggered by malicious applications.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android February 2024 security patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2024-02-01
Restart Required: Yes
Instructions:
1. Apply the February 2024 Android security patch. 2. Update affected devices through standard Android update channels. 3. Reboot device after patch installation.
🔧 Temporary Workarounds
Restrict app installations
androidOnly install apps from trusted sources like Google Play Store to reduce risk of malicious apps exploiting this vulnerability.
Enable Google Play Protect
androidEnsure Google Play Protect is enabled to detect potentially harmful applications.
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict application whitelisting policies
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version. If patch level is before February 2024, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows February 2024 or later in Settings > About phone > Android version.📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation attempts in system logs
- Suspicious ashmem-related operations
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Not applicable - primarily local device logs would need monitoring🔗 References
- https://android.googlesource.com/platform/frameworks/native/+/aa98edf0ce9dde4886979658a459900ca987f193
- https://android.googlesource.com/platform/system/core/+/46d46dc46446f14f26fbe8fb102dd36c1dfc1229
- https://source.android.com/security/bulletin/2024-02-01
- https://android.googlesource.com/platform/frameworks/native/+/aa98edf0ce9dde4886979658a459900ca987f193
- https://android.googlesource.com/platform/system/core/+/46d46dc46446f14f26fbe8fb102dd36c1dfc1229
- https://source.android.com/security/bulletin/2024-02-01
