CVE-2023-35374
📋 TL;DR
This vulnerability in Paint 3D allows remote attackers to execute arbitrary code on affected systems by tricking users into opening specially crafted files. It affects Windows systems with Paint 3D installed, primarily impacting individual users and organizations using this application for 3D modeling.
💻 Affected Systems
- Paint 3D
📦 What is this software?
Paint 3d by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the victim's computer, enabling data theft, ransomware deployment, or lateral movement within networks.
Likely Case
Malware installation leading to data exfiltration, credential theft, or system disruption for individual users who open malicious files.
If Mitigated
Limited impact due to user education, application sandboxing, and proper security controls preventing malicious file execution.
🎯 Exploit Status
Requires user interaction to open malicious file. No public exploit code available as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Latest Windows security updates
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35374
Restart Required: Yes
Instructions:
1. Open Windows Update settings. 2. Click 'Check for updates'. 3. Install all available security updates. 4. Restart computer when prompted.
🔧 Temporary Workarounds
Disable Paint 3D file associations
windowsPrevent Paint 3D from automatically opening potentially malicious files
Control Panel > Default Programs > Associate a file type or protocol with a program > Change .3mf, .fbx, .obj, .ply, .stl associations to other applications
Uninstall Paint 3D
windowsRemove vulnerable application entirely
Settings > Apps > Apps & features > Search 'Paint 3D' > Uninstall
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized executables
- Educate users about risks of opening untrusted 3D model files
🔍 How to Verify
Check if Vulnerable:
Check if Paint 3D is installed and Windows hasn't received recent security updatesCheck Version:
Get-AppxPackage Microsoft.MSPaint | Select VersionVerify Fix Applied:
Verify Windows Update history shows latest security updates installed and Paint 3D version is current📡 Detection & Monitoring
Log Indicators:
- Unusual Paint 3D process spawning child processes
- Multiple Paint 3D crashes from malformed files
Network Indicators:
- Outbound connections from Paint 3D process to unknown IPs
SIEM Query:
ProcessName="mspaint.exe" AND (ParentImage="Paint3D.exe" OR CommandLine CONTAINS "malicious.3mf")