CVE-2023-50008
📋 TL;DR
CVE-2023-50008 is a buffer overflow vulnerability in FFmpeg's colorcorrect filter that allows attackers to cause memory corruption through improper memory allocation. This affects systems using FFmpeg for video processing with the vulnerable filter enabled. Attackers could potentially execute arbitrary code or cause denial of service.
💻 Affected Systems
- FFmpeg
📦 What is this software?
Fedora by Fedoraproject
Fedora by Fedoraproject
Fedora by Fedoraproject
Ffmpeg by Ffmpeg
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if the vulnerable FFmpeg instance processes malicious video files.
Likely Case
Denial of service through application crash when processing specially crafted video files with the colorcorrect filter.
If Mitigated
Limited impact if FFmpeg runs in sandboxed environments with restricted permissions and input validation.
🎯 Exploit Status
Exploitation requires crafting malicious video files that trigger the buffer overflow when processed with the colorcorrect filter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit 5f87a68cf70dafeab2fb89b42e41a4c29053b89b and later versions
Vendor Advisory: https://github.com/FFmpeg/FFmpeg/commit/5f87a68cf70dafeab2fb89b42e41a4c29053b89b
Restart Required: Yes
Instructions:
1. Update FFmpeg to version containing commit 5f87a68cf70dafeab2fb89b42e41a4c29053b89b or later. 2. For Linux distributions, use package manager: 'sudo apt update && sudo apt upgrade ffmpeg' (Debian/Ubuntu) or 'sudo yum update ffmpeg' (RHEL/CentOS). 3. Restart any services using FFmpeg.
🔧 Temporary Workarounds
Disable colorcorrect filter
allPrevent use of the vulnerable colorcorrect filter in FFmpeg configurations
Modify FFmpeg configurations to avoid '-vf colorcorrect' or similar filter usage
Input validation
allImplement strict input validation for video files processed by FFmpeg
Implement file type verification and size limits before FFmpeg processing
🧯 If You Can't Patch
- Isolate FFmpeg processes in containers or sandboxes with minimal privileges
- Implement network segmentation to limit access to systems running vulnerable FFmpeg versions
🔍 How to Verify
Check if Vulnerable:
Check FFmpeg version: 'ffmpeg -version' and verify if it's before commit 5f87a68cf70dafeab2fb89b42e41a4c29053b89bCheck Version:
ffmpeg -version | head -1Verify Fix Applied:
Confirm FFmpeg version includes commit 5f87a68cf70dafeab2fb89b42e41a4c29053b89b: 'ffmpeg -version | grep -i commit'📡 Detection & Monitoring
Log Indicators:
- FFmpeg segmentation faults or memory errors when processing video files
- Abnormal process termination of FFmpeg instances
Network Indicators:
- Unusual video file uploads to systems using FFmpeg
- Multiple failed FFmpeg processing attempts
SIEM Query:
process_name:ffmpeg AND (event_type:crash OR exit_code:139 OR exit_code:11)🔗 References
- https://github.com/FFmpeg/FFmpeg/commit/5f87a68cf70dafeab2fb89b42e41a4c29053b89b
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPETICRXUOGRIM4U3BCRTIKE3IZWCSBT/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LE3ASLH6QF2E5OVJI5VA3JSEPJFFFMNY/
- https://trac.ffmpeg.org/ticket/10701
- https://github.com/FFmpeg/FFmpeg/commit/5f87a68cf70dafeab2fb89b42e41a4c29053b89b
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6G7EYH2JAK5OJPVNC6AXYQ5K7YGYNCDN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPETICRXUOGRIM4U3BCRTIKE3IZWCSBT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LE3ASLH6QF2E5OVJI5VA3JSEPJFFFMNY/
- https://trac.ffmpeg.org/ticket/10701
