CVE-2025-70299
📋 TL;DR
A heap overflow vulnerability in GPAC's AVI file parser allows attackers to cause denial of service by providing a specially crafted AVI file. This affects systems running GPAC v2.4.0 that process untrusted AVI files, potentially impacting media servers, video processing applications, and users opening malicious files.
💻 Affected Systems
- GPAC (Multimedia Framework)
📦 What is this software?
Gpac by Gpac
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or service disruption leading to unavailability of GPAC-dependent applications, with potential for remote code execution if heap manipulation succeeds.
Likely Case
Denial of service causing application crashes when processing malicious AVI files, disrupting media processing workflows.
If Mitigated
Contained application crash without system-wide impact if proper sandboxing and privilege separation are implemented.
🎯 Exploit Status
Proof of concept demonstrates reliable DoS via crafted AVI file. Weaponization for RCE would require additional heap manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not yet released
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Monitor GPAC security advisories for patch release. 2. Upgrade to patched version when available. 3. Restart affected services after patching.
🔧 Temporary Workarounds
Input Validation Filter
allBlock or sanitize AVI file processing in GPAC applications
# Configure application to reject AVI files or use file type restrictions
Sandbox Execution
linuxRun GPAC in isolated containers with limited privileges
docker run --read-only --cap-drop=ALL -v /safe_input:/input gpac_container
🧯 If You Can't Patch
- Implement strict file upload controls to block AVI files from untrusted sources
- Deploy network segmentation to isolate GPAC servers from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check GPAC version: gpac -version. If output shows 2.4.0, system is vulnerable.Check Version:
gpac -version 2>&1 | head -1Verify Fix Applied:
After patching, verify version is higher than 2.4.0 and test with known malicious AVI file.📡 Detection & Monitoring
Log Indicators:
- GPAC segmentation fault logs
- Application crash reports mentioning avi_parse_input_file
- Abnormal process termination of GPAC applications
Network Indicators:
- Unusual AVI file transfers to media servers
- Multiple failed media processing requests
SIEM Query:
source="*gpac*" AND ("segmentation fault" OR "heap overflow" OR "avi_parse")