CVE-2024-20104
📋 TL;DR
This vulnerability in MediaTek's da component allows local attackers to write beyond allocated memory boundaries, potentially gaining elevated privileges on affected devices. It affects Android devices using specific MediaTek chipsets. User interaction is required for exploitation, but no additional execution privileges are needed.
💻 Affected Systems
- Android devices with MediaTek chipsets
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
Openwrt by Openwrt
Openwrt by Openwrt
Openwrt by Openwrt
Rdk B by Rdkcentral
Rdk B by Rdkcentral
Yocto by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise with root/system-level access, allowing installation of persistent malware, data theft, and bypassing of security controls.
Likely Case
Local privilege escalation enabling attackers to gain elevated permissions, potentially accessing sensitive data or installing malicious applications.
If Mitigated
Limited impact with proper application sandboxing and SELinux policies in place, though kernel-level compromise remains possible.
🎯 Exploit Status
Requires user interaction and local access; exploitation depends on specific memory layout and da component usage.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS09073261
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/November-2024
Restart Required: Yes
Instructions:
1. Check device manufacturer for security updates. 2. Apply MediaTek firmware update containing patch ALPS09073261. 3. Reboot device after update installation.
🔧 Temporary Workarounds
Restrict app installations
androidOnly install apps from trusted sources to reduce risk of malicious apps exploiting this vulnerability
Disable unnecessary da components
androidIf possible, disable or restrict access to affected da services
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict application allowlisting and monitor for suspicious privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against MediaTek security bulletin; examine if da component with missing bounds check is presentCheck Version:
Check device settings > About phone > Build number and kernel versionVerify Fix Applied:
Verify patch ALPS09073261 is applied in firmware version; check for updated da component with proper bounds checking📡 Detection & Monitoring
Log Indicators:
- Unexpected da process crashes
- Privilege escalation attempts in system logs
- SELinux denials related to da component
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
Search for: 'da process crash' OR 'privilege escalation' OR 'SELinux denial' on Android devices