CVE-2024-0321
📋 TL;DR
A stack-based buffer overflow vulnerability in GPAC multimedia framework allows attackers to execute arbitrary code or cause denial of service by sending specially crafted media files. This affects all users running vulnerable versions of GPAC, particularly those processing untrusted media content. The vulnerability is in the core parsing functionality, making it widely exploitable.
💻 Affected Systems
- GPAC (GPAC Project on Advanced Content)
📦 What is this software?
Gpac by Gpac
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the GPAC process, potentially leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Denial of service (crash) of the GPAC application or service, potentially disrupting media processing workflows.
If Mitigated
Limited impact if GPAC runs with minimal privileges, in isolated environments, or only processes trusted media files.
🎯 Exploit Status
The vulnerability is in core parsing functionality, making exploitation straightforward with a crafted media file.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit d0ced41651b279bb054eb6390751e2d4eb84819a (2.3-DEV branch)
Vendor Advisory: https://github.com/gpac/gpac/commit/d0ced41651b279bb054eb6390751e2d4eb84819a
Restart Required: Yes
Instructions:
1. Update to GPAC version containing commit d0ced41651b279bb054eb6390751e2d4eb84819a or later. 2. Rebuild from source if using development versions. 3. Restart all services using GPAC libraries.
🔧 Temporary Workarounds
Input Validation and Sandboxing
linuxRun GPAC with reduced privileges and in isolated environments when processing untrusted media.
sudo setcap -r /path/to/gpac
firejail --net=none --private /path/to/gpac input.mp4
🧯 If You Can't Patch
- Restrict GPAC to process only trusted, pre-verified media files from controlled sources.
- Implement network segmentation to isolate GPAC services and monitor for anomalous behavior.
🔍 How to Verify
Check if Vulnerable:
Check GPAC version or git commit hash. If using source, verify commit is before d0ced41651b279bb054eb6390751e2d4eb84819a.Check Version:
gpac -version 2>&1 | head -1Verify Fix Applied:
Confirm GPAC version includes commit d0ced41651b279bb054eb6390751e2d4eb84819a or later. Test with known safe media files.📡 Detection & Monitoring
Log Indicators:
- GPAC process crashes
- Segmentation fault errors in system logs
- Abnormal memory usage patterns
Network Indicators:
- Unusual media file uploads to GPAC services
- Unexpected network connections from GPAC processes
SIEM Query:
process_name:"gpac" AND (event_type:crash OR memory_usage:>threshold)