CVE-2025-54767
📋 TL;DR
An authenticated read-only user can kill any processes running on the Xormon Original virtual appliance as the lpar2rrd user. This allows denial of service attacks against critical system processes. Affects organizations using Xormon Original virtual appliances with read-only user accounts.
💻 Affected Systems
- Xormon Original virtual appliance
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Critical system processes (including monitoring services, authentication daemons, or database processes) are terminated, causing complete system unavailability and potential data corruption.
Likely Case
Disruption of monitoring services leading to loss of visibility into system performance and potential cascading failures in monitored infrastructure.
If Mitigated
Limited impact if proper process monitoring and restart mechanisms are in place, but still causes service interruptions.
🎯 Exploit Status
Exploitation requires authenticated read-only user access. Public disclosure includes technical details making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version with fix applied (check vendor advisory for specific version)
Vendor Advisory: https://lpar2rrd.com/note800.php
Restart Required: Yes
Instructions:
1. Download latest patched version from vendor. 2. Backup current configuration. 3. Deploy updated virtual appliance. 4. Restore configuration. 5. Verify functionality.
🔧 Temporary Workarounds
Restrict user permissions
allRemove or restrict read-only user accounts to prevent exploitation
# Review and remove unnecessary read-only users from Xormon user management interface
Network segmentation
allIsolate Xormon appliance to trusted management networks only
# Configure firewall rules to restrict access to Xormon appliance from authorized IPs only
🧯 If You Can't Patch
- Implement strict access controls allowing only administrative users to access the appliance
- Deploy monitoring to detect process termination events and implement automated recovery
🔍 How to Verify
Check if Vulnerable:
Check if you have Xormon Original virtual appliance with read-only user accounts. Test with read-only account if process termination is possible.Check Version:
# Check Xormon version via web interface or consult vendor documentationVerify Fix Applied:
After patching, attempt to kill processes with read-only user account - should be denied.📡 Detection & Monitoring
Log Indicators:
- Unexpected process termination events
- Failed process restarts
- Authentication logs showing read-only user accessing process management functions
Network Indicators:
- HTTP requests to process termination endpoints from non-admin users
SIEM Query:
source="xormon" AND (event_type="process_kill" OR action="terminate") AND user_role="readonly"