CVE-2025-52581
📋 TL;DR
An integer overflow vulnerability in libbiosig's GDF file parsing allows arbitrary code execution when processing malicious files. This affects applications using libbiosig 3.9.0 or the master branch commit 35a819fa to parse biomedical signal data files. Attackers can achieve remote code execution by tricking users or automated systems into opening specially crafted GDF files.
💻 Affected Systems
- The Biosig Project libbiosig
📦 What is this software?
Libbiosig by Libbiosig Project
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the application processing the GDF file, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Remote code execution on systems processing untrusted GDF files, allowing attackers to install malware, exfiltrate data, or pivot to other systems.
If Mitigated
Denial of service or application crash if exploit fails, but memory corruption could still lead to information disclosure.
🎯 Exploit Status
Exploitation requires the victim to process a malicious GDF file. No authentication is needed to trigger the vulnerability once the file is processed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for patched version
Vendor Advisory: https://talosintelligence.com/vulnerability_reports/TALOS-2025-2233
Restart Required: Yes
Instructions:
1. Monitor The Biosig Project website for security updates
2. Update libbiosig to the patched version when available
3. Restart any applications using libbiosig
4. Recompile applications if using libbiosig as a library
🔧 Temporary Workarounds
Disable GDF file processing
allTemporarily disable GDF file parsing in applications using libbiosig
Configuration depends on specific application - check application documentation for disabling GDF support
Input validation for GDF files
allImplement strict validation of GDF files before processing
Implement file signature verification and size limits before passing to libbiosig
🧯 If You Can't Patch
- Implement network segmentation to isolate systems processing GDF files
- Use application allowlisting to prevent unauthorized execution of libbiosig-dependent applications
🔍 How to Verify
Check if Vulnerable:
Check libbiosig version: biosig-tools --version or check library version in applicationsCheck Version:
biosig-tools --version 2>/dev/null || echo "Check application documentation for libbiosig version"Verify Fix Applied:
Verify updated version is installed and test with known safe GDF files📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing GDF files
- Unexpected process execution from applications using libbiosig
- Memory access violations in application logs
Network Indicators:
- Unexpected outbound connections from systems processing biomedical data
- File transfers of GDF files from untrusted sources
SIEM Query:
source="application_logs" AND ("libbiosig" OR "GDF") AND ("crash" OR "segmentation fault" OR "access violation")