CVE-2022-23921
📋 TL;DR
CVE-2022-23921 is a local privilege escalation vulnerability in GE CIMPLICITY software that allows authenticated attackers to execute arbitrary code with elevated privileges. This affects systems running vulnerable versions of CIMPLICITY where the server is licensed for multiple projects but not actively running a project. Industrial control system operators using GE CIMPLICITY for SCADA/HMI applications are primarily affected.
💻 Affected Systems
- GE CIMPLICITY
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with administrative privileges leading to disruption of industrial processes, data theft, or ransomware deployment on critical infrastructure systems.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, install persistent malware, or access sensitive industrial control system data.
If Mitigated
Limited impact due to network segmentation, proper access controls, and monitoring preventing successful exploitation even if vulnerability exists.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once access is obtained. GE has confirmed the vulnerability exists but exploitation requires specific conditions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 10.0
Vendor Advisory: https://www.ge.com/content/dam/cyber_security/global/en_US/pdfs/2022-02-22_CIMPLICITY_Security_Advisory.pdf
Restart Required: Yes
Instructions:
1. Download CIMPLICITY version 10.0 from GE Digital Support website. 2. Backup current configuration and projects. 3. Run installer with administrative privileges. 4. Restart system after installation completes. 5. Verify installation and restore configurations if needed.
🔧 Temporary Workarounds
Restrict Local Access
windowsLimit login access to CIMPLICITY servers to only authorized personnel using least privilege principles.
Use Windows Group Policy to restrict local logon rights
Implement account lockout policies
Enable multi-factor authentication
Ensure Project Always Running
windowsKeep at least one project running on CIMPLICITY servers to prevent exploitation condition.
Configure CIMPLICITY to auto-start projects on boot
Monitor project status with system monitoring tools
🧯 If You Can't Patch
- Implement strict network segmentation to isolate CIMPLICITY systems from general corporate networks
- Deploy enhanced monitoring and alerting for privilege escalation attempts and unusual process creation
🔍 How to Verify
Check if Vulnerable:
Check CIMPLICITY version: Open CIMPLICITY, go to Help > About. If version is below 10.0, system is vulnerable.Check Version:
wmic product where name="CIMPLICITY" get versionVerify Fix Applied:
Verify CIMPLICITY version is 10.0 or higher in Help > About dialog. Confirm system has been restarted after update.📡 Detection & Monitoring
Log Indicators:
- Windows Security Event ID 4688 (Process Creation) showing unusual privilege escalation
- CIMPLICITY application logs showing unexpected service restarts or configuration changes
Network Indicators:
- Unusual outbound connections from CIMPLICITY servers
- SMB or RDP connections to CIMPLICITY systems followed by privilege escalation patterns
SIEM Query:
EventID=4688 AND (ProcessName="*CIMPLICITY*" OR ParentProcessName="*CIMPLICITY*") AND NewTokenElevationType=2