CVE-2024-49776
📋 TL;DR
A negative-size-param vulnerability in tsMuxer allows attackers to cause Denial of Service (DoS) by processing a specially crafted TS video file. This affects users who process untrusted video files with the vulnerable version of tsMuxer. The vulnerability can crash the application, disrupting video processing operations.
💻 Affected Systems
- tsMuxer
📦 What is this software?
Tsmuxer by Justdan96
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash leading to service disruption, potentially affecting batch processing systems or services relying on tsMuxer for video processing.
Likely Case
Application crash when processing malicious TS files, causing temporary DoS for individual users or automated processing pipelines.
If Mitigated
No impact if proper input validation and file sanitization are implemented before processing.
🎯 Exploit Status
Exploitation requires the attacker to provide a crafted TS file to the application, which is straightforward if file upload/processing is allowed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check latest tsMuxer releases after the vulnerability disclosure
Vendor Advisory: https://github.com/justdan96/tsMuxer/issues/862
Restart Required: No
Instructions:
1. Update tsMuxer to the latest version from the official repository. 2. Replace the vulnerable binary with the patched version. 3. No restart needed as it's a standalone application.
🔧 Temporary Workarounds
Input Validation
allImplement file validation before processing TS files with tsMuxer
Sandbox Processing
linuxRun tsMuxer in a container or sandboxed environment to limit impact of crashes
docker run --rm -v $(pwd):/data tsMuxer-container
🧯 If You Can't Patch
- Isolate tsMuxer to process only trusted video files from known sources
- Implement monitoring for application crashes and alert on abnormal patterns
🔍 How to Verify
Check if Vulnerable:
Check tsMuxer version: tsMuxeR --version should show nightly-2024-04-05-01-53-02 or earlierCheck Version:
tsMuxeR --versionVerify Fix Applied:
Update to latest version and verify the version number has changed from the vulnerable version📡 Detection & Monitoring
Log Indicators:
- Application crash logs from tsMuxer
- Abnormal termination of tsMuxer processes
Network Indicators:
- Unusual uploads of TS video files to processing systems
SIEM Query:
process_name="tsMuxeR" AND event_type="crash"