CVE-2023-50192
📋 TL;DR
This is a use-after-free vulnerability in Trimble SketchUp Viewer's SKP file parser that allows remote attackers to execute arbitrary code. Attackers can exploit it by tricking users into opening malicious SKP files or visiting malicious web pages. All users running vulnerable versions of SketchUp Viewer are affected.
💻 Affected Systems
- Trimble SketchUp Viewer
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local privilege escalation leading to malware installation, data exfiltration, or persistence mechanisms being established on the compromised system.
If Mitigated
Limited impact due to sandboxing or restricted user privileges, potentially only causing application crashes or denial of service.
🎯 Exploit Status
Exploitation requires user interaction but no authentication. The vulnerability is in a file parser which is commonly targeted by attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Trimble's security advisory for specific patched version
Vendor Advisory: https://help.sketchup.com/en/release-notes/sketchup-viewer
Restart Required: Yes
Instructions:
1. Open SketchUp Viewer
2. Go to Help > Check for Updates
3. Install any available updates
4. Restart the application
🔧 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 with a program > Select .skp > Change program > Choose different application
macOS: Right-click SKP file > Get Info > Open with > Select different application > Change All
Application sandboxing
allRun SketchUp Viewer in restricted environment
Windows: Use Windows Sandbox or third-party sandboxing tools
macOS: Use built-in sandboxing features or third-party solutions
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized SketchUp Viewer execution
- Use network segmentation to isolate systems running SketchUp Viewer from critical assets
🔍 How to Verify
Check if Vulnerable:
Check SketchUp Viewer version against Trimble's security advisory for vulnerable versionsCheck Version:
Windows: Open SketchUp Viewer > Help > About SketchUp Viewer; macOS: Open SketchUp Viewer > SketchUp Viewer > About SketchUp ViewerVerify Fix Applied:
Verify SketchUp Viewer has been updated to the latest version and test opening known safe SKP files📡 Detection & Monitoring
Log Indicators:
- Application crashes of SketchUp Viewer
- Unexpected process creation from SketchUp Viewer
- Network connections initiated by SketchUp Viewer
Network Indicators:
- Downloads of SKP files from untrusted sources
- Outbound connections from SketchUp Viewer to suspicious IPs
SIEM Query:
process_name:"SketchUp Viewer" AND (event_type:crash OR parent_process:unexpected)