CVE-2024-8594
📋 TL;DR
A heap-based buffer overflow vulnerability in Autodesk AutoCAD's libodxdll.dll allows attackers to execute arbitrary code by tricking users into opening malicious MODEL files. This affects AutoCAD users who open untrusted files. Successful exploitation gives attackers the same privileges as the current AutoCAD process.
💻 Affected Systems
- Autodesk AutoCAD
📦 What is this software?
Autocad by Autodesk
Autocad Mep by Autodesk
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the AutoCAD user, potentially leading to full system compromise, data theft, or ransomware deployment.
Likely Case
Application crash or limited code execution for privilege escalation within the AutoCAD environment.
If Mitigated
Application crash without code execution if exploit fails or security controls block it.
🎯 Exploit Status
Exploitation requires user interaction to open malicious file. Heap overflow exploitation typically requires some sophistication but is well-understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Autodesk Security Advisory ADSK-SA-2024-0019 for specific patched versions
Vendor Advisory: https://www.autodesk.com/trust/security-advisories/adsk-sa-2024-0019
Restart Required: Yes
Instructions:
1. Open Autodesk Desktop App or AutoCAD. 2. Check for updates. 3. Install the latest security update. 4. Restart AutoCAD after installation.
🔧 Temporary Workarounds
Block MODEL file extensions
windowsPrevent AutoCAD from opening potentially malicious MODEL files via file extension blocking
Use Group Policy or endpoint protection to block .model files
Configure AutoCAD to not associate with .model files
Restrict file sources
allOnly open MODEL files from trusted sources and locations
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized AutoCAD execution
- Use endpoint detection and response (EDR) to monitor for suspicious AutoCAD process behavior
🔍 How to Verify
Check if Vulnerable:
Check AutoCAD version against patched versions in Autodesk advisory. Unpatched versions are vulnerable.Check Version:
In AutoCAD: Type 'ABOUT' command or check Help > About AutoCADVerify Fix Applied:
Verify AutoCAD version matches or exceeds patched version listed in Autodesk advisory ADSK-SA-2024-0019📡 Detection & Monitoring
Log Indicators:
- AutoCAD crash logs with libodxdll.dll references
- Unexpected AutoCAD process termination
- Security logs showing file access to .model files
Network Indicators:
- Downloads of .model files from untrusted sources
- Network traffic spikes from AutoCAD process
SIEM Query:
Process:AutoCAD.exe AND (EventID:1000 OR ExceptionCode:c0000005) OR FileExtension:.model