CVE-2022-45792
📋 TL;DR
This vulnerability in Omron PLC engineering software allows attackers to craft malicious project files that exploit directory traversal to write arbitrary files on the filesystem. Attackers can overwrite existing files or create new ones with the privileges of the logged-in user. This affects users of Omron PLC programming and configuration software.
💻 Affected Systems
- Omron PLC programming and engineering software (specific product names not provided in reference)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through arbitrary file write leading to privilege escalation, remote code execution, or destruction of critical system files.
Likely Case
Local file corruption, data loss, or malware deployment through malicious project files.
If Mitigated
Limited impact if software runs with minimal privileges and project files are from trusted sources only.
🎯 Exploit Status
Exploitation requires user interaction to open malicious project file. No authentication bypass needed if user has file access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided reference
Vendor Advisory: https://www.dragos.com/advisory/omron-plc-and-engineering-software-network-and-file-format-access/
Restart Required: Yes
Instructions:
1. Contact Omron for specific patch information. 2. Apply vendor-provided updates to affected software. 3. Restart systems as required by patch.
🔧 Temporary Workarounds
Restrict project file sources
allOnly open project files from trusted, verified sources. Implement strict controls on file transfers to engineering workstations.
Run with minimal privileges
windowsConfigure software to run with limited user privileges rather than administrative rights.
🧯 If You Can't Patch
- Isolate engineering workstations from general network access and internet
- Implement application whitelisting to prevent execution of unauthorized files
🔍 How to Verify
Check if Vulnerable:
Check software version against vendor advisory. If using unpatched Omron PLC engineering software, assume vulnerable.Check Version:
Check software 'About' dialog or vendor documentation for version informationVerify Fix Applied:
Verify software has been updated to patched version specified by vendor.📡 Detection & Monitoring
Log Indicators:
- Unexpected file writes in system directories
- Multiple failed file access attempts from engineering software
Network Indicators:
- Unusual file transfers to engineering workstations
- Project files from untrusted sources
SIEM Query:
Process:omron_software AND (FileCreate:*\..\* OR FileWrite:*\..\*)