CVE-2025-25723
📋 TL;DR
A buffer overflow vulnerability in GPAC version 2.5 allows local attackers to execute arbitrary code on affected systems. This affects systems running GPAC 2.5 where an attacker has local access. The vulnerability could lead to privilege escalation or complete system compromise.
💻 Affected Systems
- GPAC (MP4Box, MP4Client, and related tools)
📦 What is this software?
Gpac by Gpac
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains full system control, installs persistent malware, accesses sensitive data, and pivots to other systems
Likely Case
Local privilege escalation leading to unauthorized access to sensitive files and system resources
If Mitigated
Limited impact with proper access controls, but still potential for local user privilege escalation
🎯 Exploit Status
Requires local access to the system. Exploitation involves triggering the buffer overflow through specific GPAC functionality.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: GPAC version after commit 74e26b8dfeb0ab8c7317603b80a18306d0698473
Vendor Advisory: https://github.com/gpac/gpac/commit/74e26b8dfeb0ab8c7317603b80a18306d0698473
Restart Required: No
Instructions:
1. Update GPAC to latest version from official repository. 2. Rebuild from source using commit after 74e26b8dfeb0ab8c7317603b80a18306d0698473. 3. Replace existing GPAC binaries with patched versions.
🔧 Temporary Workarounds
Restrict local user access
allLimit which users can execute GPAC tools and access GPAC functionality
chmod 750 /usr/local/bin/MP4Box
chmod 750 /usr/local/bin/MP4Client
🧯 If You Can't Patch
- Implement strict access controls to limit which users can run GPAC tools
- Monitor for unusual process execution patterns involving GPAC binaries
🔍 How to Verify
Check if Vulnerable:
Check GPAC version: MP4Box -version or gpac -version. If output shows version 2.5, system is vulnerable.Check Version:
MP4Box -version 2>&1 | grep -i version || gpac -version 2>&1 | grep -i versionVerify Fix Applied:
Verify GPAC version is updated beyond commit 74e26b8dfeb0ab8c7317603b80a18306d0698473. Check git log or version string.📡 Detection & Monitoring
Log Indicators:
- Unusual process crashes of GPAC binaries
- Suspicious child processes spawned from GPAC tools
- Failed privilege escalation attempts
Network Indicators:
- Outbound connections from GPAC processes to unexpected destinations
SIEM Query:
process_name:("MP4Box" OR "MP4Client" OR "gpac") AND (event_type:"process_crash" OR parent_process_name:"GPAC*")