CVE-2020-0128
📋 TL;DR
This CVE describes an integer overflow vulnerability in Android's AMPEG4ElementaryAssembler component that leads to an out-of-bounds read. Attackers can exploit this to remotely disclose sensitive information from affected devices without requiring user interaction. Only Android 10 devices are affected by this vulnerability.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Remote attackers could read sensitive memory contents from vulnerable Android devices, potentially exposing authentication tokens, personal data, or other confidential information.
Likely Case
Information disclosure of process memory, which could include media processing data or adjacent memory contents from the affected component.
If Mitigated
With proper patching, no impact as the vulnerability is completely addressed in updated versions.
🎯 Exploit Status
Exploitation requires delivering specially crafted media content to the device, but no user interaction is needed once the content is processed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Patch Level 2020-06-01 or later
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2020-06-01
Restart Required: Yes
Instructions:
1. Check for Android system updates in Settings > System > Advanced > System update. 2. Install the June 2020 security patch or later. 3. Restart the device after installation.
🔧 Temporary Workarounds
Disable automatic media processing
androidPrevent automatic processing of media files from untrusted sources
🧯 If You Can't Patch
- Restrict media file processing to trusted sources only
- Implement network segmentation to limit exposure of vulnerable devices
🔍 How to Verify
Check if Vulnerable:
Check Android version in Settings > About phone > Android version. If it shows Android 10 and security patch level is before June 2020, the device is vulnerable.Check Version:
adb shell getprop ro.build.version.release && adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify the security patch level is 2020-06-01 or later in Settings > About phone > Android security patch level.📡 Detection & Monitoring
Log Indicators:
- Media framework crashes
- Unexpected memory access errors in media processing logs
Network Indicators:
- Unusual media file downloads to Android devices
- Traffic patterns suggesting media exploitation attempts
SIEM Query:
source="android_logs" AND (process="media" OR component="AMPEG4ElementaryAssembler") AND (error="out_of_bounds" OR error="memory_access")