CVE-2024-48423
📋 TL;DR
A use-after-free vulnerability in assimp v5.4.3 allows local attackers to execute arbitrary code via the CallbackToLogRedirector function. This affects applications using the Assimp library for 3D model processing. Attackers need local access to exploit this vulnerability.
💻 Affected Systems
- assimp (Open Asset Import Library)
📦 What is this software?
Assimp by Assimp
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the vulnerable application, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation allowing attackers to execute code in the context of the vulnerable application, potentially accessing sensitive data or moving laterally within the network.
If Mitigated
Limited impact with proper sandboxing and privilege separation, potentially only causing application crashes or denial of service.
🎯 Exploit Status
Exploitation requires local access and understanding of the use-after-free condition. The CWE-416 (Use After Free) vulnerability typically requires careful memory manipulation to achieve code execution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check latest assimp release (likely v5.4.4 or later)
Vendor Advisory: https://github.com/assimp/assimp/issues/5788
Restart Required: Yes
Instructions:
1. Check current assimp version
2. Update to latest patched version from official repository
3. Rebuild any applications using assimp
4. Restart affected applications/services
🔧 Temporary Workarounds
Disable vulnerable functionality
allIf possible, disable or restrict the CallbackToLogRedirector functionality in applications using assimp
Application-specific configuration required
Application sandboxing
allRun applications using assimp with reduced privileges and in isolated environments
Use containers, virtual machines, or OS-level sandboxing
🧯 If You Can't Patch
- Implement strict access controls to limit local user access to systems running vulnerable applications
- Monitor for suspicious process behavior and memory access patterns that might indicate exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check assimp version in use: 'assimp version' or check library version in application dependenciesCheck Version:
assimp versionVerify Fix Applied:
Verify updated assimp version is v5.4.4 or later and test 3D model processing functionality📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unusual process spawning from assimp-using applications
- Failed attempts to access freed memory regions
Network Indicators:
- No network indicators as this is local exploitation
SIEM Query:
Process creation events from assimp-related applications OR Application crash logs containing memory violation errors