CVE-2024-25447
📋 TL;DR
A heap buffer overflow vulnerability in imlib2's image parsing function allows attackers to execute arbitrary code or crash applications by processing malicious images. This affects any software using imlib2 v1.9.1 for image loading, including image viewers and applications with image processing capabilities.
💻 Affected Systems
- imlib2
- feh (image viewer)
- other applications using imlib2 library
📦 What is this software?
Imlib2 by Enlightenment
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Application crashes (denial of service) with potential for limited code execution in memory-corrupted contexts.
If Mitigated
Contained crashes with no privilege escalation if proper sandboxing and memory protections are enabled.
🎯 Exploit Status
Exploitation requires crafting a malicious image file that triggers the buffer overflow during parsing.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: imlib2 v1.9.2 or later
Vendor Advisory: https://git.enlightenment.org/old/legacy-imlib2/issues/20
Restart Required: Yes
Instructions:
1. Update imlib2 package using system package manager (apt, yum, etc.). 2. Restart affected applications. 3. Recompile any custom applications using imlib2 with updated library.
🔧 Temporary Workarounds
Disable imlib2 image processing
linuxConfigure applications to use alternative image libraries or disable image loading features.
Check application documentation for configuration options
Restrict image file uploads/processing
allImplement strict file type validation and sandbox image processing operations.
🧯 If You Can't Patch
- Implement application sandboxing with minimal privileges
- Deploy memory protection mechanisms (ASLR, DEP) and monitor for crashes
🔍 How to Verify
Check if Vulnerable:
Check imlib2 version: `pkg-config --modversion imlib2` or `ldconfig -p | grep imlib2`Check Version:
pkg-config --modversion imlib2 2>/dev/null || echo 'imlib2 not found'Verify Fix Applied:
Confirm version is 1.9.2 or higher and test with known safe images.📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory corruption errors in system logs
Network Indicators:
- Unusual image file transfers to vulnerable systems
SIEM Query:
source="application_logs" AND ("segmentation fault" OR "heap overflow") AND process="*imlib*"