CVE-2025-14423
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code by tricking users into opening malicious LBM image files in GIMP. The flaw is a stack-based buffer overflow during LBM file parsing that can lead to full system compromise. All GIMP users who open untrusted LBM files are affected.
💻 Affected Systems
- GIMP (GNU Image Manipulation Program)
📦 What is this software?
Gimp by Gimp
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining the same privileges as the GIMP user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local privilege escalation or malware installation on the user's system when opening a malicious LBM file.
If Mitigated
Application crash or denial of service if exploit fails or is blocked by security controls.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) but the vulnerability itself is straightforward to exploit once a malicious LBM file is crafted.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions including commit 481cdbbb97746be1145ec3a633c567a68633c521
Vendor Advisory: https://gitlab.gnome.org/GNOME/gimp/-/commit/481cdbbb97746be1145ec3a633c567a68633c521
Restart Required: No
Instructions:
1. Update GIMP to latest version from official repositories. 2. On Linux: Use package manager (apt update && apt upgrade gimp). 3. On Windows: Download latest installer from gimp.org. 4. On macOS: Update via package manager or download latest version.
🔧 Temporary Workarounds
Disable LBM file format support
linuxRemove or disable LBM file format plugin to prevent parsing of malicious files
mv /usr/lib/gimp/2.0/plug-ins/file-lbm /usr/lib/gimp/2.0/plug-ins/file-lbm.disabled
Restart GIMP
File extension blocking
allBlock .lbm files at email/web gateway or endpoint protection
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized execution of GIMP
- Use endpoint protection with exploit prevention capabilities and restrict user privileges
🔍 How to Verify
Check if Vulnerable:
Check GIMP version and compare with patched version from commit 481cdbbb97746be1145ec3a633c567a68633c521Check Version:
gimp --versionVerify Fix Applied:
Verify GIMP version is updated and test opening known safe LBM files to ensure functionality📡 Detection & Monitoring
Log Indicators:
- GIMP crash logs with stack traces
- Unexpected process creation from GIMP
- File access to .lbm files followed by process termination
Network Indicators:
- Downloads of .lbm files from untrusted sources
- Network connections initiated by GIMP process
SIEM Query:
process_name:"gimp" AND (event_type:"crash" OR file_extension:".lbm")