CVE-2024-50613
📋 TL;DR
libsndfile versions through 1.2.2 contain a reachable assertion in the MPEG L3 encoder close function that can cause applications using this library to crash when processing certain audio files. This affects any software that uses libsndfile to handle MP3 encoding operations. The vulnerability is triggered during file processing rather than requiring network access.
💻 Affected Systems
- libsndfile
📦 What is this software?
Libsndfile by Libsndfile Project
⚠️ Risk & Real-World Impact
Worst Case
Denial of service causing application crashes when processing malicious audio files, potentially disrupting audio processing services or media applications.
Likely Case
Application crashes when processing specially crafted MP3 files, leading to service interruptions in audio processing pipelines.
If Mitigated
Limited impact with proper input validation and error handling in applications using libsndfile.
🎯 Exploit Status
Exploitation requires ability to provide malicious audio files to applications using libsndfile's MP3 encoding.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for latest fix
Vendor Advisory: https://github.com/libsndfile/libsndfile/issues/1034
Restart Required: Yes
Instructions:
1. Monitor libsndfile GitHub repository for official patch
2. Update to patched version when available
3. Recompile/reinstall applications using libsndfile
4. Restart affected services
🔧 Temporary Workarounds
Disable MPEG L3 encoding
allConfigure applications to avoid using libsndfile's MP3 encoding functionality
Input validation
allImplement strict validation of audio files before processing with libsndfile
🧯 If You Can't Patch
- Implement application-level crash recovery mechanisms
- Isolate audio processing to dedicated containers/sandboxes
🔍 How to Verify
Check if Vulnerable:
Check libsndfile version: pkg-config --modversion sndfile or check library version in applicationsCheck Version:
pkg-config --modversion sndfileVerify Fix Applied:
Verify updated version after patching and test with known problematic audio files📡 Detection & Monitoring
Log Indicators:
- Application crashes with assertion failures
- Segmentation faults in audio processing
- Error messages referencing mpeg_l3_encode.c
Network Indicators:
- Unusual audio file upload patterns
- Repeated failed audio processing attempts
SIEM Query:
process.name: (application_using_libsndfile) AND event.type: crash