CVE-2024-2425
📋 TL;DR
A denial-of-service vulnerability in Rockwell Automation PowerFlex 527 drives allows attackers to crash the web server through improper input validation. This affects industrial control systems using these specific drives, requiring manual restart to restore functionality.
💻 Affected Systems
- Rockwell Automation PowerFlex 527
📦 What is this software?
Powerflex 527 Ac Drives Firmware by Rockwellautomation
⚠️ Risk & Real-World Impact
Worst Case
Complete loss of web interface access and potential disruption to drive monitoring/configuration capabilities until manual restart is performed.
Likely Case
Temporary loss of web-based management interface requiring physical or network-based restart of affected drives.
If Mitigated
Minimal impact if drives are properly segmented and web interfaces are not exposed to untrusted networks.
🎯 Exploit Status
Based on CWE-20 (Improper Input Validation), exploitation likely requires sending malformed requests to the web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Rockwell Automation advisory SD1664 for specific firmware versions
Vendor Advisory: https://www.rockwellautomation.com/en-us/support/advisory.SD1664.html
Restart Required: Yes
Instructions:
1. Download updated firmware from Rockwell Automation website. 2. Follow firmware update procedures for PowerFlex 527 drives. 3. Restart affected devices after update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate PowerFlex 527 drives from untrusted networks and restrict access to web interface.
Access Control Lists
allImplement firewall rules to restrict access to PowerFlex web interfaces to authorized management stations only.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate drives from untrusted networks
- Disable web interface if not required for operations
🔍 How to Verify
Check if Vulnerable:
Check firmware version against Rockwell Automation advisory SD1664. Attempt to access web interface to verify functionality.Check Version:
Check firmware version through drive display or web interface status pageVerify Fix Applied:
Verify firmware version is updated per advisory and test web interface with normal operations.📡 Detection & Monitoring
Log Indicators:
- Web server crash logs
- Unexpected drive restarts
- Failed web interface connections
Network Indicators:
- Unusual traffic patterns to drive web ports
- Multiple failed HTTP requests to drive IPs
SIEM Query:
source="powerflex_logs" AND (event="webserver_crash" OR event="unexpected_restart")