CVE-2025-25943
📋 TL;DR
A buffer overflow vulnerability in Bento4 v1.6.0-641 allows local attackers to execute arbitrary code via the AP4_Stz2Atom component. This affects systems running vulnerable versions of Bento4, particularly those processing untrusted MP4 files locally.
💻 Affected Systems
- Bento4
📦 What is this software?
Bento4 by Axiosys
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the affected system through arbitrary code execution.
Likely Case
Local privilege escalation or arbitrary code execution when processing malicious MP4 files.
If Mitigated
Limited impact if proper sandboxing and file validation are implemented.
🎯 Exploit Status
Exploitation requires local access and ability to trigger the vulnerable component with malicious input.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for latest patched version
Vendor Advisory: https://github.com/axiomatic-systems/Bento4/issues/993
Restart Required: No
Instructions:
1. Visit the GitHub issue page for details
2. Update to the latest Bento4 version
3. Recompile any applications using Bento4 libraries
🔧 Temporary Workarounds
Restrict MP4 file processing
allLimit processing of untrusted MP4 files through Bento4 components
🧯 If You Can't Patch
- Implement strict file validation for MP4 inputs
- Run Bento4 processes with minimal privileges and sandboxing
🔍 How to Verify
Check if Vulnerable:
Check if Bento4 version is 1.6.0-641Check Version:
Check Bento4 documentation for version command or check installed package versionVerify Fix Applied:
Verify Bento4 has been updated to a version after the fix📡 Detection & Monitoring
Log Indicators:
- Crash logs from Bento4 processes
- Unusual process execution following MP4 file processing
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Process crashes involving Bento4 components or abnormal child process creation from Bento4