CVE-2023-27912
📋 TL;DR
This vulnerability in Autodesk AutoCAD 2023 allows attackers to exploit an out-of-bounds read when processing malicious X_B files. Successful exploitation could lead to crashes, sensitive data disclosure, or arbitrary code execution. Users running affected AutoCAD versions are at risk.
💻 Affected Systems
- Autodesk AutoCAD
📦 What is this software?
Autocad by Autodesk
Autocad Lt by Autodesk
Autocad Mep by Autodesk
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the same privileges as the AutoCAD process, potentially leading to full system compromise.
Likely Case
Application crash or denial of service, with potential for limited information disclosure.
If Mitigated
Minimal impact if proper file handling restrictions and network segmentation are implemented.
🎯 Exploit Status
Exploitation requires user interaction to open a malicious X_B file. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: AutoCAD 2023 with security update applied
Vendor Advisory: https://www.autodesk.com/trust/security-advisories/adsk-sa-2023-0005
Restart Required: Yes
Instructions:
1. Open AutoCAD 2023. 2. Navigate to Help > About. 3. Check for updates and install the latest security update. 4. Restart AutoCAD to complete the installation.
🔧 Temporary Workarounds
Restrict X_B file handling
windowsBlock or restrict the opening of X_B files through group policy or application controls.
User awareness training
allEducate users not to open X_B files from untrusted sources.
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized AutoCAD execution.
- Use network segmentation to isolate AutoCAD systems from critical assets.
🔍 How to Verify
Check if Vulnerable:
Check AutoCAD version in Help > About. If version is 2023 without the latest security update, it is vulnerable.Check Version:
In AutoCAD: Help > About or type ABOUT in command line.Verify Fix Applied:
Verify the security update is installed via AutoCAD's update history or version information.📡 Detection & Monitoring
Log Indicators:
- AutoCAD crash logs with memory access violations
- Unexpected process termination events
Network Indicators:
- Unusual outbound connections from AutoCAD process
- File downloads of X_B files from untrusted sources
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName='acad.exe' AND ExceptionCode=0xC0000005