CVE-2024-20034
📋 TL;DR
This CVE describes a missing bounds check vulnerability in MediaTek battery components that allows local privilege escalation. Attackers with system execution privileges can exploit this without user interaction to gain elevated access. This affects devices using vulnerable MediaTek chipsets.
💻 Affected Systems
- MediaTek chipsets with vulnerable battery components
📦 What is this software?
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary code with kernel-level privileges, potentially installing persistent malware or accessing sensitive system data.
Likely Case
Local attackers gaining elevated privileges to bypass security controls, access protected data, or modify system configurations.
If Mitigated
Limited impact if proper privilege separation and access controls are implemented, though the vulnerability still provides a foothold for further exploitation.
🎯 Exploit Status
Requires system execution privileges initially, but no user interaction needed for exploitation. Missing bounds check vulnerabilities typically require specific knowledge of memory layout.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS08488849
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/March-2024
Restart Required: Yes
Instructions:
1. Check device manufacturer for security updates. 2. Apply March 2024 or later MediaTek security patches. 3. Reboot device after patch installation. 4. Verify patch ALPS08488849 is applied.
🔧 Temporary Workarounds
Restrict system privileges
allLimit applications and users with system execution privileges to reduce attack surface
🧯 If You Can't Patch
- Implement strict access controls to limit who has system execution privileges
- Monitor for unusual privilege escalation attempts and system modifications
🔍 How to Verify
Check if Vulnerable:
Check device security patch level for March 2024 or later MediaTek updates. Vulnerable if patch ALPS08488849 is not applied.Check Version:
On Android: Settings > About phone > Android version > Security patch levelVerify Fix Applied:
Verify security patch level includes March 2024 MediaTek updates and specifically mentions patch ALPS08488849.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Battery service anomalies or crashes
- Unauthorized system modifications
Network Indicators:
- None - local exploitation only
SIEM Query:
Search for privilege escalation events or battery service anomalies in system logs