CVE-2024-20115
📋 TL;DR
This CVE describes an out-of-bounds write vulnerability in MediaTek's ccu component due to missing bounds checks. It allows local privilege escalation to System level without user interaction. Affects devices using vulnerable MediaTek chipsets.
💻 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 code execution, allowing attackers to install persistent malware, exfiltrate sensitive data, or brick devices.
Likely Case
Local privilege escalation from limited user to System privileges, enabling installation of malicious apps, data theft, or surveillance capabilities.
If Mitigated
Limited impact if proper application sandboxing and SELinux/AppArmor policies are enforced, though kernel-level compromise may still be possible.
🎯 Exploit Status
Requires local access and System execution privileges for exploitation; no public exploit available as of advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS09036695
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 patch ALPS09036695. 3. Reboot device after patch installation.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to vulnerable devices to reduce attack surface.
🧯 If You Can't Patch
- Isolate vulnerable devices on segmented network with strict access controls.
- Implement application whitelisting and monitor for suspicious privilege escalation attempts.
🔍 How to Verify
Check if Vulnerable:
Check device chipset information and firmware version against MediaTek security bulletin.Check Version:
On Android: Settings > About Phone > Build Number / Kernel VersionVerify Fix Applied:
Verify patch ALPS09036695 is applied in device firmware version and security patch level.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Kernel module loading from untrusted sources
- SELinux/AppArmor policy violations
Network Indicators:
- Unusual outbound connections from system processes
- Suspicious inter-process communication
SIEM Query:
event_type:privilege_escalation AND process_name:ccu OR kernel_module:ccu