CVE-2020-0046
📋 TL;DR
This vulnerability allows local privilege escalation on Android devices through a heap buffer overflow in the DRM plugin. Attackers can exploit this without user interaction to gain elevated privileges. Only Android 10 devices are affected.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to execute arbitrary code with system privileges, potentially installing persistent malware or accessing sensitive data.
Likely Case
Local privilege escalation allowing attackers to bypass application sandboxing and access other apps' data or system resources.
If Mitigated
Limited impact if devices are patched or have security controls preventing local code execution.
🎯 Exploit Status
Requires local access to the device. No user interaction needed but attacker needs ability to execute code on the device.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Patch Level 2020-03-01 or later
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2020-03-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > Advanced > System update. 2. Install the March 2020 security patch or later. 3. Reboot the device after installation.
🔧 Temporary Workarounds
Disable unnecessary apps
androidReduce attack surface by disabling or removing unnecessary applications that could be used as entry points.
Restrict app installations
androidOnly allow app installations from trusted sources like Google Play Store.
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement application allowlisting to prevent unauthorized app execution
🔍 How to Verify
Check if Vulnerable:
Check Android version in Settings > About phone > Android version. If it shows Android 10, check security patch level.Check Version:
adb shell getprop ro.build.version.release && adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level is 2020-03-01 or later in Settings > About phone > Android security patch level.📡 Detection & Monitoring
Log Indicators:
- Unusual process privilege escalation
- SELinux denials related to DRM services
- Crash reports from DrmPlugin
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
Look for process creation events with unexpected parent-child relationships or privilege escalation patterns on Android devices.