CVE-2024-41209
📋 TL;DR
A heap-based buffer overflow vulnerability in tsMuxer allows attackers to execute arbitrary code or cause denial of service by processing a specially crafted MOV video file. This affects users who process untrusted video files with the vulnerable version of tsMuxer. The vulnerability is particularly dangerous because it can be triggered through normal file processing operations.
💻 Affected Systems
- tsMuxer
📦 What is this software?
Tsmuxer by Justdan96
⚠️ Risk & Real-World Impact
Worst Case
Full remote code execution with the privileges of the tsMuxer process, potentially leading to complete system compromise.
Likely Case
Denial of service (application crash) when processing malicious MOV files, with potential for code execution in some scenarios.
If Mitigated
Application crash without code execution if exploit fails or mitigations like ASLR/DEP are effective.
🎯 Exploit Status
Proof of concept exists in the GitHub issue. Exploitation requires crafting a malicious MOV file and getting it processed by tsMuxer.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check latest tsMuxer releases after March 2024
Vendor Advisory: https://github.com/justdan96/tsMuxer/issues/841
Restart Required: No
Instructions:
1. Check current tsMuxer version. 2. Update to the latest version from the official GitHub repository. 3. Verify the fix by checking the commit history for buffer overflow fixes.
🔧 Temporary Workarounds
Disable MOV file processing
allConfigure tsMuxer to reject or skip MOV file processing
Modify tsMuxer configuration to exclude MOV files from processing
Sandbox execution
linuxRun tsMuxer in a container or sandbox with limited privileges
docker run --read-only --cap-drop=ALL -v /input:/input:ro tsMuxer
🧯 If You Can't Patch
- Implement strict input validation to only allow trusted video files
- Run tsMuxer with minimal privileges and in isolated environments
🔍 How to Verify
Check if Vulnerable:
Check if using tsMuxer version nightly-2024-03-14-01-51-12 or earlier. Test with known malicious MOV file if available.Check Version:
tsMuxeR --version or check build/version information in the applicationVerify Fix Applied:
Update to latest version and test processing the same malicious MOV file - application should not crash.📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing MOV files
- Memory access violation errors in logs
Network Indicators:
- Unusual file uploads to systems running tsMuxer
- MOV files from untrusted sources
SIEM Query:
source="tsMuxer" AND (event="crash" OR event="segmentation_fault") AND file_extension="mov"