CVE-2025-11277
📋 TL;DR
A heap-based buffer overflow vulnerability exists in Assimp 6.0.2's Q3D file parser. Attackers with local access can execute arbitrary code by providing a malicious Q3D file. This affects any application using the vulnerable Assimp library to process 3D model files.
💻 Affected Systems
- Open Asset Import Library (Assimp)
📦 What is this software?
Assimp by Assimp
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with arbitrary code execution leading to complete control of the affected system.
Likely Case
Local privilege escalation or application crash when processing malicious Q3D files.
If Mitigated
Application crash without code execution if memory protections are enabled.
🎯 Exploit Status
Proof-of-concept exploit is publicly available in the GitHub issue. Attack requires local access to feed malicious Q3D file.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check latest Assimp release (6.0.3 or later)
Vendor Advisory: https://github.com/assimp/assimp/issues/6358
Restart Required: Yes
Instructions:
1. Check current Assimp version
2. Update to latest version via package manager or source
3. Rebuild applications using Assimp
4. Restart affected services
🔧 Temporary Workarounds
Disable Q3D file processing
allDisable Q3D file format support in Assimp configuration
Modify Assimp configuration to exclude Q3D importer
Input validation
allImplement strict validation of Q3D files before processing
Add file validation layer before passing to Assimp
🧯 If You Can't Patch
- Implement strict file upload restrictions for Q3D files
- Run applications with minimal privileges and memory protection controls
🔍 How to Verify
Check if Vulnerable:
Check if Assimp version is 6.0.2 and Q3D file processing is enabledCheck Version:
assimp version or check package managerVerify Fix Applied:
Verify Assimp version is updated beyond 6.0.2 and test with known malicious Q3D file📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing Q3D files
- Memory access violation errors
- Unexpected process termination
Network Indicators:
- Local file transfer of Q3D files to vulnerable systems
SIEM Query:
Process:assimp AND (EventID:1000 OR ExceptionCode:c0000005)