CVE-2014-125017
📋 TL;DR
This critical vulnerability in FFmpeg 2.0 allows remote attackers to cause memory corruption through the rpza_decode_stream function, potentially leading to arbitrary code execution. It affects any system or application using vulnerable FFmpeg versions for video processing. The vulnerability can be exploited without authentication by sending specially crafted video files.
💻 Affected Systems
- FFmpeg
📦 What is this software?
Ffmpeg by Ffmpeg
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment
Likely Case
Application crashes, denial of service, or limited memory corruption affecting video processing functionality
If Mitigated
Contained application crash with no system compromise if proper sandboxing and privilege separation are implemented
🎯 Exploit Status
Exploitation requires crafting malicious RPZA video files; no public exploit code is documented
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: FFmpeg with commit 77bb0004bbe18f1498cfecdc68db5f10808b6599
Vendor Advisory: http://git.videolan.org/?p=ffmpeg.git;a=commit;h=77bb0004bbe18f1498cfecdc68db5f10808b6599
Restart Required: Yes
Instructions:
1. Update FFmpeg to version containing the fix commit 2. Rebuild any applications using FFmpeg libraries 3. Restart affected services
🔧 Temporary Workarounds
Disable RPZA codec support
allDisable RPZA video codec decoding in FFmpeg configuration
ffmpeg -codecs | grep rpza
Recompile FFmpeg with --disable-decoder=rpza
Input validation filtering
allBlock or filter RPZA encoded video files at network perimeter
🧯 If You Can't Patch
- Implement strict input validation to reject RPZA encoded video files
- Run FFmpeg in sandboxed/containerized environment with minimal privileges
🔍 How to Verify
Check if Vulnerable:
Check FFmpeg version and commit hash: ffmpeg -version | grep 'version\|commit'Check Version:
ffmpeg -version | head -1Verify Fix Applied:
Verify commit 77bb0004bbe18f1498cfecdc68db5f10808b6599 is present: git log --oneline | grep '77bb0004'📡 Detection & Monitoring
Log Indicators:
- FFmpeg segmentation faults
- Memory access violation errors
- Unexpected process termination during video processing
Network Indicators:
- Unusual video file uploads to processing services
- RPZA encoded video traffic to vulnerable systems
SIEM Query:
process_name:"ffmpeg" AND (event_type:"crash" OR exit_code:139 OR exit_code:-1073741819)