CVE-2019-17113
📋 TL;DR
This CVE describes a buffer overflow vulnerability in libopenmpt's C API functions ModPlug_InstrumentName and ModPlug_SampleName. Attackers can exploit this by providing specially crafted module files to execute arbitrary code or crash applications. Any software using vulnerable versions of libopenmpt to process audio modules is affected.
💻 Affected Systems
- libopenmpt
- Software using libopenmpt library
📦 What is this software?
Libopenmpt by Openmpt
Libopenmpt by Openmpt
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the application using libopenmpt, potentially leading to complete system compromise.
Likely Case
Application crash (denial of service) when processing malicious module files, with potential for code execution in some configurations.
If Mitigated
Application crash without code execution if exploit fails or mitigations like ASLR are effective.
🎯 Exploit Status
Exploitation requires crafting malicious module files and getting them processed by vulnerable software. No public exploit code is known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: libopenmpt 0.3.19 or 0.4.9
Vendor Advisory: https://github.com/OpenMPT/openmpt/commit/927688ddab43c2b203569de79407a899e734fabe
Restart Required: Yes
Instructions:
1. Identify applications using libopenmpt. 2. Update libopenmpt library to version 0.3.19 or 0.4.9. 3. Recompile applications if using static linking. 4. Restart affected applications.
🔧 Temporary Workarounds
Disable module file processing
allPrevent applications from processing potentially malicious module files by disabling related features.
Input validation for module files
allImplement strict validation of module files before passing to libopenmpt functions.
🧯 If You Can't Patch
- Implement strict file upload controls to prevent malicious module files from being processed
- Use application sandboxing or containerization to limit potential damage from exploitation
🔍 How to Verify
Check if Vulnerable:
Check libopenmpt version: 'pkg-config --modversion libopenmpt' or check application dependencies. Versions before 0.3.19 or 0.4.9 are vulnerable.Check Version:
pkg-config --modversion libopenmpt 2>/dev/null || echo 'libopenmpt not found'Verify Fix Applied:
Verify libopenmpt version is 0.3.19 or higher, or 0.4.9 or higher. Test with known safe module files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing module files
- Segmentation faults in applications using libopenmpt
Network Indicators:
- Unusual file uploads of module formats (.mod, .xm, .s3m, .it)
SIEM Query:
source="application_logs" AND ("segmentation fault" OR "buffer overflow") AND process="*libopenmpt*"🔗 References
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00044.html
- https://github.com/OpenMPT/openmpt/commit/927688ddab43c2b203569de79407a899e734fabe
- https://github.com/OpenMPT/openmpt/compare/libopenmpt-0.3.18...libopenmpt-0.3.19
- https://github.com/OpenMPT/openmpt/compare/libopenmpt-0.4.8...libopenmpt-0.4.9
- https://lists.debian.org/debian-lts-announce/2020/08/msg00003.html
- https://source.openmpt.org/browse/openmpt/trunk/OpenMPT/?op=revision&rev=12127&peg=12127
- https://www.debian.org/security/2020/dsa-4729
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00044.html
- https://github.com/OpenMPT/openmpt/commit/927688ddab43c2b203569de79407a899e734fabe
- https://github.com/OpenMPT/openmpt/compare/libopenmpt-0.3.18...libopenmpt-0.3.19
- https://github.com/OpenMPT/openmpt/compare/libopenmpt-0.4.8...libopenmpt-0.4.9
- https://lists.debian.org/debian-lts-announce/2020/08/msg00003.html
- https://source.openmpt.org/browse/openmpt/trunk/OpenMPT/?op=revision&rev=12127&peg=12127
- https://www.debian.org/security/2020/dsa-4729
