CVE-2024-20043
📋 TL;DR
This CVE describes an out-of-bounds write vulnerability in MediaTek's 'da' component due to missing bounds checks. It allows local privilege escalation to System privileges without requiring user interaction. Affected systems include devices using vulnerable MediaTek chipsets.
💻 Affected Systems
- MediaTek chipsets with vulnerable 'da' component
📦 What is this software?
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access could gain System-level privileges, potentially compromising the entire device, installing persistent malware, or accessing sensitive data.
Likely Case
Local privilege escalation allowing attackers to bypass security controls and execute arbitrary code with elevated permissions.
If Mitigated
With proper patching and security controls, the risk is reduced to minimal, though the vulnerability remains present in unpatched systems.
🎯 Exploit Status
Exploitation requires local access and System execution privileges initially. No public exploit code is known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patch ID: ALPS08541781
Vendor Advisory: https://corp.mediatek.com/product-security-bulletin/April-2024
Restart Required: Yes
Instructions:
1. Check device manufacturer for security updates. 2. Apply the April 2024 MediaTek security patch. 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
- Implement strict access controls to prevent unauthorized local access.
- Monitor for suspicious privilege escalation attempts and unusual system behavior.
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in Android settings. If before April 2024 MediaTek patch, likely vulnerable.Check Version:
On Android: Settings > About phone > Android security patch levelVerify Fix Applied:
Verify security patch level includes April 2024 MediaTek updates. Confirm patch ID ALPS08541781 is applied.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Suspicious 'da' process behavior
- Kernel or system service crashes
Network Indicators:
- Local privilege escalation typically has minimal network indicators
SIEM Query:
Search for events indicating privilege escalation from user to system level on Android devices with MediaTek chipsets.