CVE-2024-20111
📋 TL;DR
This vulnerability in MediaTek's ccu component allows local attackers to write beyond allocated memory boundaries, potentially leading to privilege escalation. It affects devices with MediaTek chipsets that have System execution privileges. No user interaction is required for exploitation.
💻 Affected Systems
- MediaTek chipsets with ccu component
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with kernel-level access, allowing attackers to install persistent malware, steal sensitive data, or brick the device.
Likely Case
Local privilege escalation from a limited user to root/system privileges, enabling further attacks on the device.
If Mitigated
Limited impact if proper privilege separation and SELinux/app sandboxing are enforced, though memory corruption could still cause crashes.
🎯 Exploit Status
Exploitation requires local access and System privileges; out-of-bounds write typically requires memory layout knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS09065033
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/November-2024
Restart Required: Yes
Instructions:
1. Contact device manufacturer for firmware updates. 2. Apply MediaTek-provided patch ALPS09065033. 3. Reboot device after update.
🔧 Temporary Workarounds
Restrict System Privileges
linuxLimit which processes/apps have System execution privileges through SELinux policies.
# Review SELinux policies: getenforce
# Set enforcing mode: setenforce 1
🧯 If You Can't Patch
- Isolate affected devices on network segments with strict access controls.
- Monitor for unusual process behavior or privilege escalation attempts.
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against manufacturer advisories; no public command available.Check Version:
# Android: getprop ro.build.fingerprint
# Linux: uname -aVerify Fix Applied:
Verify patch ALPS09065033 is applied via manufacturer update logs or firmware version checks.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Unexpected process privilege changes
- Memory access violation logs
Network Indicators:
- None - local exploitation only
SIEM Query:
Process: (ParentImage: *ccu*) AND (IntegrityLevel: System)