CVE-2024-44866
📋 TL;DR
A buffer overflow vulnerability in MuseScore Studio's GuitarPro file parser allows attackers to execute arbitrary code or crash the application by opening a malicious GuitarPro file. This affects MuseScore Studio users who open untrusted GuitarPro files, potentially leading to system compromise.
💻 Affected Systems
- MuseScore Studio
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the MuseScore Studio user, potentially leading to full system compromise, data theft, or malware installation.
Likely Case
Application crash (Denial of Service) when opening a malicious file, disrupting user workflow and potentially causing data loss in unsaved work.
If Mitigated
Limited impact if users only open trusted files from verified sources, with application sandboxing preventing code execution.
🎯 Exploit Status
Exploitation requires user interaction to open a malicious file. Public proof-of-concept exists in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor MuseScore website for updates and apply when released.
🔧 Temporary Workarounds
Disable GuitarPro file association
allRemove file type association to prevent automatic opening of GuitarPro files
Windows: Control Panel > Default Programs > Associate a file type or protocol with a program > Remove .gp* associations
Linux: Update mimeapps.list to remove MuseScore from GuitarPro file types
macOS: Get Info on .gp files > Change Open With to another application
Use application sandboxing
allRun MuseScore Studio in restricted environment to limit exploit impact
Windows: Use Windows Sandbox or AppLocker
Linux: Use Firejail or SELinux/AppArmor
macOS: Use macOS Sandbox
🧯 If You Can't Patch
- Implement strict file handling policies: only open GuitarPro files from trusted sources
- Use network segmentation to isolate MuseScore Studio systems from critical infrastructure
🔍 How to Verify
Check if Vulnerable:
Check MuseScore Studio version in Help > About. If version is 4.3.2 or earlier, system is vulnerable.Check Version:
musescore --version (Linux/macOS) or check Help > About menu (Windows)Verify Fix Applied:
After patch installation, verify version is newer than 4.3.2 in Help > About.📡 Detection & Monitoring
Log Indicators:
- Application crash logs mentioning GuitarPro1::read
- Unexpected process termination of MuseScore Studio
- Error messages related to buffer overflow or memory corruption
Network Indicators:
- Downloads of GuitarPro files from untrusted sources
- Unusual network connections from MuseScore Studio process
SIEM Query:
Process:Name="MuseScore" AND (EventID=1000 OR EventID=1001) AND CommandLine:"*.gp*"