CVE-2024-24401
📋 TL;DR
A critical SQL injection vulnerability in Nagios XI 2024R1.01 allows remote attackers to execute arbitrary SQL commands via the monitoringwizard.php component. This can lead to complete system compromise, data theft, or service disruption. Organizations running Nagios XI 2024R1.01 are affected.
💻 Affected Systems
- Nagios XI
📦 What is this software?
Nagios Xi by Nagios
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise leading to data exfiltration, ransomware deployment, or complete system takeover
Likely Case
Database compromise, credential theft, and potential lateral movement within the network
If Mitigated
Limited impact if proper network segmentation and WAF rules are in place
🎯 Exploit Status
SQL injection vulnerabilities are commonly weaponized quickly, especially with CVSS 9.8 scores
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024R1.02 or later
Vendor Advisory: https://www.nagios.com/changelog/
Restart Required: Yes
Instructions:
1. Backup current Nagios XI configuration and database. 2. Download latest version from Nagios customer portal. 3. Run upgrade script following Nagios documentation. 4. Verify upgrade completed successfully.
🔧 Temporary Workarounds
WAF Rule Implementation
allImplement web application firewall rules to block SQL injection patterns targeting monitoringwizard.php
# Example ModSecurity rule: SecRule ARGS "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt'
Access Restriction
linuxRestrict access to monitoringwizard.php to trusted IP addresses only
# Apache: <Location /nagiosxi/monitoringwizard.php> Order deny,allow Deny from all Allow from 192.168.1.0/24 </Location>
# Nginx: location ~ /monitoringwizard\.php$ { allow 192.168.1.0/24; deny all; }
🧯 If You Can't Patch
- Immediately isolate Nagios XI system from internet and restrict network access
- Implement strict monitoring and alerting for suspicious database queries or file system changes
🔍 How to Verify
Check if Vulnerable:
Check Nagios XI version via web interface or command: grep 'product_version' /usr/local/nagiosxi/html/config.inc.phpCheck Version:
grep 'product_version' /usr/local/nagiosxi/html/config.inc.phpVerify Fix Applied:
Verify version is 2024R1.02 or later and test monitoringwizard.php functionality📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by monitoringwizard.php access
- Unexpected file creation in Nagios directories
Network Indicators:
- Unusual outbound connections from Nagios server
- SQL injection patterns in HTTP requests to monitoringwizard.php
SIEM Query:
source="nagios_access.log" AND uri="/monitoringwizard.php" AND (payload="UNION" OR payload="SELECT" OR payload="INSERT" OR payload="DELETE")