CVE-2024-48425
📋 TL;DR
This CVE describes a null pointer dereference vulnerability in the Assimp library's mesh processing function that can cause segmentation faults. It affects applications using Assimp to parse 3D model files, potentially leading to denial of service. The vulnerability is triggered during processing of specially crafted 3D models.
💻 Affected Systems
- Assimp (Open Asset Import Library)
📦 What is this software?
Assimp by Assimp
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution if the segmentation fault can be weaponized through memory corruption techniques, though this is unlikely given the nature of the vulnerability.
Likely Case
Denial of service through application crash when processing malicious 3D model files.
If Mitigated
Application stability issues with graceful error handling preventing complete crashes.
🎯 Exploit Status
Exploitation requires feeding a malicious 3D model file to an application using Assimp. No authentication needed if file upload/processing is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown from provided data - check GitHub issue for specific fix version
Vendor Advisory: https://github.com/assimp/assimp/issues/5791
Restart Required: Yes
Instructions:
1. Check the GitHub issue for patch availability
2. Update Assimp library to patched version
3. Recompile applications using Assimp
4. Restart affected services
🔧 Temporary Workarounds
Input validation for 3D models
allImplement strict validation of 3D model files before passing to Assimp library
Sandbox model processing
allRun Assimp processing in isolated containers or sandboxes to contain crashes
🧯 If You Can't Patch
- Implement strict file upload restrictions for 3D model formats
- Use monitoring to detect and block repeated application crashes from model processing
🔍 How to Verify
Check if Vulnerable:
Check if application uses Assimp library and processes untrusted 3D model filesCheck Version:
Check Assimp version in application dependencies or library filesVerify Fix Applied:
Test with known problematic 3D models that previously caused crashes📡 Detection & Monitoring
Log Indicators:
- Segmentation fault errors in application logs
- Assimp library crash reports
- Repeated application restarts after model processing
Network Indicators:
- Unusual uploads of 3D model files followed by service disruption
SIEM Query:
source="application.logs" AND ("segmentation fault" OR "SEGV" OR "Assimp crash")