CVE-2024-20005
📋 TL;DR
This vulnerability allows local privilege escalation on MediaTek devices due to a missing permission check in the 'da' component. Attackers can gain SYSTEM privileges without user interaction. Affects devices using MediaTek chipsets with vulnerable firmware.
💻 Affected Systems
- MediaTek chipset-based devices (smartphones, tablets, IoT devices)
📦 What is this software?
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise with SYSTEM privileges, allowing installation of persistent malware, data theft, and bypassing all security controls.
Likely Case
Local attackers gain elevated privileges to install malicious apps, access sensitive data, or disable security features.
If Mitigated
Limited impact if proper application sandboxing and SELinux policies are enforced, though SYSTEM access remains dangerous.
🎯 Exploit Status
Exploitation requires SYSTEM execution privileges initially, suggesting it's a local escalation chain. No public exploit details available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware with patch ID ALPS08355599
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/March-2024
Restart Required: Yes
Instructions:
1. Check device manufacturer for firmware updates. 2. Apply MediaTek-provided patch ALPS08355599. 3. Reboot device after update. 4. Verify patch installation via build fingerprint.
🔧 Temporary Workarounds
Restrict app installations
androidOnly install apps from trusted sources and disable unknown sources installation.
Enable SELinux enforcing mode
linuxEnsure SELinux is in enforcing mode to limit privilege escalation impact.
getenforce
setenforce 1
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data.
- Implement application allowlisting to prevent malicious app execution.
🔍 How to Verify
Check if Vulnerable:
Check device build fingerprint against MediaTek's patched firmware list. No public CVE-specific detection command available.Check Version:
adb shell getprop ro.build.fingerprintVerify Fix Applied:
Verify firmware includes patch ID ALPS08355599 in build information.📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation attempts in system logs
- SELinux denials related to 'da' component
Network Indicators:
- None - local exploitation only
SIEM Query:
Device logs showing unexpected SYSTEM privilege acquisition or daemon manipulation