CVE-2023-50188
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on affected Trimble SketchUp Viewer installations by tricking users into opening malicious SKP files. The flaw exists due to uninitialized memory access during SKP file parsing, enabling code execution in the current process context. Users of vulnerable SketchUp Viewer versions are affected.
💻 Affected Systems
- Trimble SketchUp Viewer
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via remote code execution, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or malware installation when users open malicious SKP files from untrusted sources.
If Mitigated
Limited impact if proper application whitelisting and user training prevent execution of untrusted files.
🎯 Exploit Status
Exploitation requires user interaction but no authentication. Weaponization likely due to file-based attack vector.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references; check Trimble security advisory
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-23-1838/
Restart Required: Yes
Instructions:
1. Check Trimble security advisory for latest patched version
2. Download and install latest SketchUp Viewer update
3. Restart system after installation
🔧 Temporary Workarounds
Disable SKP file association
allPrevent SketchUp Viewer from automatically opening SKP files
Windows: Control Panel > Default Programs > Associate a file type or protocol
macOS: Right-click SKP file > Get Info > Change Open With
Application control policy
allBlock SketchUp Viewer execution via application whitelisting
Windows: Use AppLocker or Windows Defender Application Control
macOS: Use Gatekeeper or MDM policies
🧯 If You Can't Patch
- Implement network segmentation to isolate SketchUp Viewer systems
- Educate users to never open SKP files from untrusted sources
🔍 How to Verify
Check if Vulnerable:
Check SketchUp Viewer version against Trimble's patched version listCheck Version:
Windows: Check Help > About in SketchUp Viewer; macOS: Click SketchUp Viewer > About SketchUp ViewerVerify Fix Applied:
Verify installed version matches or exceeds patched version from Trimble advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected SketchUp Viewer crashes
- Process creation from SketchUp Viewer with unusual parameters
Network Indicators:
- Downloads of SKP files from untrusted sources
- Outbound connections from SketchUp Viewer process
SIEM Query:
Process creation where parent_process contains 'sketchup' AND (command_line contains '.skp' OR image_path contains unusual locations)