CVE-2024-13998
📋 TL;DR
Nagios XI versions before 2024R1.1.3 allow authenticated users to access sensitive user account information including API keys and password hashes, which they should not have permission to view. This could lead to account compromise, API abuse, or password cracking. Organizations running vulnerable Nagios XI versions are affected.
💻 Affected Systems
- Nagios XI
📦 What is this software?
Nagios Xi by Nagios
Nagios Xi by Nagios
Nagios Xi by Nagios
Nagios Xi by Nagios
Nagios Xi by Nagios
Nagios Xi by Nagios
Nagios Xi by Nagios
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative access, compromise all monitored systems, exfiltrate sensitive data, and maintain persistent access through API key abuse.
Likely Case
Privilege escalation leading to unauthorized access to monitoring data, configuration changes, and potential lateral movement within the network.
If Mitigated
Limited exposure of some user data with no further exploitation due to network segmentation and strong authentication controls.
🎯 Exploit Status
Requires authenticated access but exploitation is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024R1.1.3
Vendor Advisory: https://www.nagios.com/changelog/nagios-xi/
Restart Required: Yes
Instructions:
1. Backup current Nagios XI configuration and data. 2. Download 2024R1.1.3 from Nagios customer portal. 3. Follow Nagios XI upgrade documentation. 4. Restart Nagios XI services. 5. Verify upgrade completed successfully.
🔧 Temporary Workarounds
Restrict User Permissions
allLimit authenticated user access to minimum required permissions
Network Segmentation
allIsolate Nagios XI from sensitive systems and limit access to trusted IPs
🧯 If You Can't Patch
- Implement strict network access controls to limit Nagios XI access to trusted IP addresses only
- Rotate all API keys and user passwords immediately and monitor for unauthorized access
🔍 How to Verify
Check if Vulnerable:
Check Nagios XI version via Admin > System Config > About or run: grep 'nagiosxi_version' /usr/local/nagiosxi/var/xiversionCheck Version:
grep 'nagiosxi_version' /usr/local/nagiosxi/var/xiversionVerify Fix Applied:
Confirm version is 2024R1.1.3 or later using same methods📡 Detection & Monitoring
Log Indicators:
- Unusual API key usage patterns
- Multiple failed login attempts followed by successful access
- Access to user management endpoints from non-admin accounts
Network Indicators:
- Unusual outbound connections from Nagios XI server
- API requests from unexpected IP addresses
SIEM Query:
source="nagios" AND (event="api_key_access" OR event="user_info_access") AND user!="admin"