CVE-2024-30807
📋 TL;DR
This vulnerability is a heap-use-after-free flaw in Bento4 v1.6.0-641-2-g1529b83 that occurs during destruction of AP4_UnknownAtom objects. It allows attackers to cause denial of service by crashing applications using the vulnerable library, particularly affecting media processing tools like mp42ts. Users and systems that process MP4 media files with Bento4 are at risk.
💻 Affected Systems
- Bento4
📦 What is this software?
Bento4 by Axiosys
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash leading to denial of service, potentially disrupting media processing pipelines or services that rely on Bento4 for MP4 file handling.
Likely Case
Application crash when processing specially crafted MP4 files, resulting in temporary service disruption until the process restarts.
If Mitigated
Minimal impact if proper input validation and sandboxing are implemented, with crashes contained to isolated processes.
🎯 Exploit Status
Proof-of-concept exists in GitHub references showing the crash via mp42ts. Exploitation requires providing a malicious MP4 file to vulnerable applications.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check latest Bento4 releases after the issue was reported
Vendor Advisory: https://github.com/axiomatic-systems/Bento4/issues/937
Restart Required: Yes
Instructions:
1. Check Bento4 GitHub repository for latest release. 2. Update to patched version. 3. Rebuild any applications using Bento4. 4. Restart affected services.
🔧 Temporary Workarounds
Input Validation
allImplement strict validation of MP4 files before processing with Bento4
Process Isolation
allRun Bento4-based media processing in isolated containers or sandboxes
🧯 If You Can't Patch
- Implement network-level filtering to block suspicious MP4 files
- Monitor for application crashes and implement automatic restart mechanisms
🔍 How to Verify
Check if Vulnerable:
Check Bento4 version: bento4 --version or examine build metadata for v1.6.0-641-2-g1529b83Check Version:
bento4 --versionVerify Fix Applied:
Update to latest Bento4 version and test with known malicious MP4 files📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing MP4 files
- Segmentation faults in Bento4-related processes
Network Indicators:
- Unusual MP4 file uploads to media processing services
SIEM Query:
Process:name="bento4" OR Process:name contains "mp42ts" AND Event:type="Crash"