CVE-2024-20080
📋 TL;DR
This vulnerability in MediaTek's GNSS service allows remote attackers to escalate privileges without user interaction due to improper certificate validation. It affects devices using MediaTek chipsets with vulnerable GNSS firmware. Exploitation could give attackers elevated system access.
💻 Affected Systems
- MediaTek chipsets with GNSS functionality
📦 What is this software?
Android by Google
Android by Google
Rdk B by Rdkcentral
Yocto by Linuxfoundation
Yocto by Linuxfoundation
Yocto by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker gains full system control over affected device, potentially installing persistent malware, accessing sensitive data, or using device as pivot point in network.
Likely Case
Remote attacker gains elevated privileges to execute arbitrary code, modify system configurations, or access protected resources on the device.
If Mitigated
With proper network segmentation and access controls, impact limited to isolated network segments, though device compromise still possible.
🎯 Exploit Status
No authentication required; user interaction not needed; CVSS 9.8 indicates critical severity with low attack complexity
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS08720039
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/July-2024
Restart Required: Yes
Instructions:
1. Contact device manufacturer for firmware updates. 2. Apply patch ALPS08720039. 3. Reboot device. 4. Verify patch installation.
🔧 Temporary Workarounds
Disable GNSS service
androidTemporarily disable Global Navigation Satellite System service if not required
adb shell pm disable com.mediatek.gnss
Network segmentation
allIsolate affected devices in separate network segments
🧯 If You Can't Patch
- Isolate affected devices from internet and critical networks
- Implement strict network access controls and monitor for suspicious GNSS service activity
🔍 How to Verify
Check if Vulnerable:
Check device firmware version and compare with patched versions from manufacturer; check if patch ALPS08720039 is appliedCheck Version:
Manufacturer-specific commands vary; consult device documentation for firmware version checkVerify Fix Applied:
Verify patch ALPS08720039 is installed via device firmware version check or manufacturer verification tools📡 Detection & Monitoring
Log Indicators:
- Unexpected GNSS service crashes
- Unauthorized certificate validation attempts
- Privilege escalation events in system logs
Network Indicators:
- Unusual GNSS-related network traffic
- Suspicious certificate exchange patterns
SIEM Query:
source="system_logs" AND (process="gnss" OR service="GNSS") AND (event="crash" OR event="privilege")