CVE-2022-29953
📋 TL;DR
CVE-2022-29953 exposes Bently Nevada 3700 series condition monitoring equipment through hardcoded credentials on a maintenance interface. Attackers connecting to port 4001/TCP can take full control of affected devices. Organizations using these industrial monitoring systems are vulnerable.
💻 Affected Systems
- Bently Nevada 3700 series condition monitoring equipment
📦 What is this software?
Bently Nevada 3701\/40 Firmware by Bakerhughes
Bently Nevada 3701\/44 Firmware by Bakerhughes
Bently Nevada 3701\/46 Firmware by Bakerhughes
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of industrial monitoring equipment allowing attackers to manipulate sensor readings, disable alarms, or disrupt industrial processes, potentially causing equipment damage or safety incidents.
Likely Case
Unauthorized access to monitoring systems allowing data theft, configuration changes, or disruption of monitoring capabilities.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external access to the maintenance interface.
🎯 Exploit Status
Exploitation requires only network access to port 4001/TCP and knowledge of hardcoded credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact vendor for updated firmware
Vendor Advisory: https://www.cisa.gov/uscert/ics/advisories/icsa-22-188-02
Restart Required: Yes
Instructions:
1. Contact Bently Nevada/GE Digital for updated firmware. 2. Apply firmware update following vendor instructions. 3. Restart affected devices. 4. Verify interface is secured.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Bently Nevada 3700 devices from untrusted networks using firewalls or network segmentation.
Port Blocking
allBlock access to port 4001/TCP from all networks except authorized maintenance stations.
🧯 If You Can't Patch
- Implement strict network access controls to limit connections to port 4001/TCP only from authorized maintenance stations.
- Monitor network traffic to port 4001/TCP for unauthorized access attempts and implement intrusion detection.
🔍 How to Verify
Check if Vulnerable:
Check if device is accessible on port 4001/TCP and attempt authentication with known hardcoded credentials (specific credentials not disclosed publicly).Check Version:
Check device firmware version through maintenance interface or vendor documentation.Verify Fix Applied:
Verify port 4001/TCP is no longer accessible or requires proper authentication, and confirm firmware version is post-2022-04-29.📡 Detection & Monitoring
Log Indicators:
- Authentication attempts on port 4001/TCP
- Configuration changes to monitoring equipment
Network Indicators:
- Connections to port 4001/TCP from unauthorized sources
- Unusual traffic patterns to industrial monitoring systems
SIEM Query:
source_port:4001 OR destination_port:4001 AND (protocol:TCP)