CVE-2025-70303
📋 TL;DR
A heap overflow vulnerability in GPAC's uncv_parse_config() function allows attackers to cause Denial of Service (DoS) by providing a specially crafted MP4 file. This affects GPAC v2.4.0 users who process untrusted media files, potentially crashing applications that use this library.
💻 Affected Systems
- GPAC (Multimedia Framework)
📦 What is this software?
Gpac by Gpac
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash leading to service disruption, potentially affecting media processing pipelines or streaming services.
Likely Case
Application crash when processing malicious MP4 files, causing temporary DoS until service restart.
If Mitigated
Limited impact if file uploads are restricted or sandboxed environments are used.
🎯 Exploit Status
Proof of concept available on GitHub demonstrates DoS via crafted MP4 file. No authentication required to trigger.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor GPAC repository for updates. Consider upgrading to newer versions if vulnerability is fixed.
🔧 Temporary Workarounds
Input Validation and Sandboxing
allImplement strict validation of MP4 files before processing and run GPAC in sandboxed/isolated environments.
File Upload Restrictions
allRestrict or scan MP4 file uploads to services using GPAC.
🧯 If You Can't Patch
- Implement network segmentation to isolate GPAC services from critical systems
- Deploy application monitoring to detect crash patterns and anomalous MP4 processing
🔍 How to Verify
Check if Vulnerable:
Check if GPAC version is 2.4.0 using 'gpac -version' or by examining installed packages.Check Version:
gpac -versionVerify Fix Applied:
Verify GPAC version is updated beyond 2.4.0 when patch becomes available.📡 Detection & Monitoring
Log Indicators:
- GPAC process crashes
- Segmentation fault errors in application logs
- Abnormal termination of media processing services
Network Indicators:
- Unusual MP4 file uploads to services
- Repeated connection attempts to media processing endpoints
SIEM Query:
source="application.log" AND ("segmentation fault" OR "gpac crash" OR "heap overflow")