CVE-2023-2746
📋 TL;DR
Rockwell Automation Enhanced HIM software has insufficient API protection with incorrect CORS settings, making it vulnerable to CSRF attacks. An attacker could trick authenticated users into clicking malicious links, potentially leading to sensitive information disclosure or full remote access. This affects systems running the vulnerable Enhanced HIM software.
💻 Affected Systems
- Rockwell Automation Enhanced HIM software
📦 What is this software?
Enhanced Him by Rockwellautomation
⚠️ Risk & Real-World Impact
Worst Case
Full remote access to affected products, allowing complete system compromise and potential control over industrial processes.
Likely Case
Sensitive information disclosure including configuration data, credentials, or operational parameters that could facilitate further attacks.
If Mitigated
Limited impact with proper network segmentation, access controls, and user awareness preventing successful social engineering.
🎯 Exploit Status
Requires social engineering to trick authenticated users into clicking malicious links. CSRF attack needs user to be logged into the vulnerable system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1139760
Restart Required: Yes
Instructions:
1. Review Rockwell Automation security advisory. 2. Apply recommended patches/updates. 3. Restart affected systems. 4. Verify patch installation.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Enhanced HIM systems from untrusted networks and implement strict access controls.
CORS Policy Hardening
allImplement proper CORS headers to restrict cross-origin requests to trusted domains only.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems
- Enforce strong authentication and session management controls
🔍 How to Verify
Check if Vulnerable:
Check Enhanced HIM software version against vendor advisory. Review CORS configuration and API protection mechanisms.Check Version:
Check Enhanced HIM software version through system interface or configuration files.Verify Fix Applied:
Verify patch installation through version check. Test API endpoints for proper CORS headers and CSRF protections.📡 Detection & Monitoring
Log Indicators:
- Unusual API access patterns
- Multiple failed authentication attempts
- Requests from unexpected origins
Network Indicators:
- Cross-origin requests to Enhanced HIM APIs
- Unusual traffic patterns to HMI systems
SIEM Query:
Search for cross-origin requests to Enhanced HIM endpoints or unusual API access patterns.