CVE-2024-57509
📋 TL;DR
A buffer overflow vulnerability in Bento4's mp42avc tool allows local attackers to execute arbitrary code by exploiting the AP4_File::ParseStream function. This affects users who process untrusted MP4 files with vulnerable versions of Bento4. The vulnerability requires local access to the system running the software.
💻 Affected Systems
- Bento4
- mp42avc tool
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation leading to full system compromise, data theft, or persistent backdoor installation.
Likely Case
Local user gains elevated privileges or executes malicious code within the context of the Bento4 process.
If Mitigated
Limited impact due to proper access controls, sandboxing, or running with minimal privileges.
🎯 Exploit Status
Exploitation requires crafting a malicious MP4 file and local execution access. No public exploit code is available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit after 3bdc891602d19789b8e8626e4a3e613a937b4d35
Vendor Advisory: https://github.com/axiomatic-systems/Bento4/issues/989
Restart Required: No
Instructions:
1. Update Bento4 to the latest version from GitHub. 2. Rebuild mp42avc from source. 3. Replace existing binary with patched version.
🔧 Temporary Workarounds
Restrict execution permissions
allLimit who can execute mp42avc binary to trusted users only
chmod 750 /path/to/mp42avc
chown root:trustedgroup /path/to/mp42avc
Input validation
allOnly process MP4 files from trusted sources
🧯 If You Can't Patch
- Remove or disable mp42avc binary if not essential
- Run Bento4 in a sandboxed/containerized environment with limited privileges
🔍 How to Verify
Check if Vulnerable:
Check Bento4 version: git log --oneline | head -1Check Version:
git log --oneline | head -1Verify Fix Applied:
Verify commit hash is newer than 3bdc891602d19789b8e8626e4a3e613a937b4d35📡 Detection & Monitoring
Log Indicators:
- Segmentation faults or abnormal crashes of mp42avc process
- Unusual process execution patterns from Bento4 tools
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
Process:mp42avc AND (EventID:1000 OR Signal:SIGSEGV)