CVE-2025-58127
📋 TL;DR
This vulnerability allows attackers in a man-in-the-middle position to intercept traffic between Checkmk and Dell PowerScale systems due to improper certificate validation. It affects organizations using the Checkmk Exchange plugin for Dell PowerScale monitoring. The risk is limited to attackers who can intercept network traffic between these systems.
💻 Affected Systems
- Checkmk Exchange plugin for Dell PowerScale
📦 What is this software?
Dell Powerscale by Tomtretbar
⚠️ Risk & Real-World Impact
Worst Case
Attackers could intercept sensitive monitoring data, credentials, or configuration information transmitted between Checkmk and PowerScale systems, potentially leading to data exposure or further system compromise.
Likely Case
Monitoring data interception allowing attackers to gather information about PowerScale system performance, configuration, and potentially credentials if transmitted insecurely.
If Mitigated
Limited impact if proper network segmentation and encryption controls are in place, though monitoring data could still be intercepted.
🎯 Exploit Status
Exploitation requires man-in-the-middle position on network traffic between Checkmk and PowerScale systems.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific version
Vendor Advisory: https://exchange.checkmk.com/p/powerscale
Restart Required: Yes
Instructions:
1. Check Checkmk Exchange for updated PowerScale plugin version. 2. Update plugin through Checkmk interface. 3. Restart Checkmk services. 4. Verify certificate validation is properly enforced.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Checkmk and PowerScale systems on dedicated network segments to reduce man-in-the-middle attack surface
VPN/Tunnel Implementation
allUse VPN or encrypted tunnels between Checkmk and PowerScale systems to protect traffic
🧯 If You Can't Patch
- Implement network segmentation between Checkmk and PowerScale systems
- Use VPN or encrypted tunnels for all communications between affected systems
🔍 How to Verify
Check if Vulnerable:
Check Checkmk plugin version and verify if using unpatched PowerScale plugin. Review network traffic between systems for proper TLS certificate validation.Check Version:
checkmk --version or check Checkmk web interface for plugin versionsVerify Fix Applied:
Verify plugin version is updated to patched version. Test certificate validation by attempting to intercept traffic with invalid certificates.📡 Detection & Monitoring
Log Indicators:
- Failed certificate validation attempts in Checkmk logs
- Unexpected certificate warnings in system logs
Network Indicators:
- Unencrypted or improperly encrypted traffic between Checkmk and PowerScale IPs
- Certificate validation failures in network traffic
SIEM Query:
source="checkmk" AND ("certificate" OR "validation" OR "TLS") AND ("fail" OR "error" OR "warning")