CVE-2024-30809
📋 TL;DR
A heap-use-after-free vulnerability in Bento4 v1.6.0-641-2-g1529b83 allows attackers to cause denial of service by triggering memory corruption in the AP4_Sample::GetOffset() function. This affects systems using Bento4 for media processing, particularly when handling malicious MP4 files converted to transport streams.
💻 Affected Systems
- Bento4
📦 What is this software?
Bento4 by Axiosys
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or service disruption leading to unavailability of media processing functionality, potentially allowing arbitrary code execution if combined with other vulnerabilities.
Likely Case
Application crash or denial of service when processing specially crafted media files, disrupting media playback or conversion services.
If Mitigated
Controlled application termination without system-wide impact if proper sandboxing and memory protections are in place.
🎯 Exploit Status
Proof-of-concept exists in GitHub references showing DoS via crafted MP4 files. Exploitation requires feeding malicious media files to vulnerable Bento4 components.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub repository for latest fixes
Vendor Advisory: https://github.com/axiomatic-systems/Bento4/issues/937
Restart Required: Yes
Instructions:
1. Visit Bento4 GitHub repository
2. Check for latest commits addressing CVE-2024-30809
3. Update to patched version
4. Restart affected services
🔧 Temporary Workarounds
Input Validation
allImplement strict input validation for media files before processing with Bento4
Process Isolation
linuxRun Bento4 in isolated containers or sandboxes to limit impact of crashes
docker run --security-opt=no-new-privileges -v /media:/media bento4-container
🧯 If You Can't Patch
- Implement network segmentation to isolate Bento4 services
- Deploy application-level firewalls to filter suspicious media file uploads
🔍 How to Verify
Check if Vulnerable:
Check Bento4 version: bento4 --version or examine installed package versionCheck Version:
bento4 --versionVerify Fix Applied:
Test with known malicious MP4 files from PoC references and verify no crash occurs📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory corruption errors in system logs
- Abnormal process termination of Bento4 components
Network Indicators:
- Unusual media file uploads to conversion services
- Repeated connection attempts to media processing endpoints
SIEM Query:
process_name:"mp42ts" AND (event_type:crash OR exit_code:139)