Nagios XI < 2024R1.2 Privilege Escalation via NagVis Configuration (nagvis.conf)

Successful exploitation of CVE-2024-14004 could allow an attacker to gain root or administrator-level access to the Nagios XI server. This could lead to complete system compromise, including data breaches, modification of system configurations, and installation of malicious software. The attacker would need to be an authenticated user within the Nagios XI environment to exploit this vulnerability, but the impact of a successful attack is significant. The ability to manipulate NagVis configuration provides a relatively straightforward attack vector if an attacker can gain initial access.

Organizations heavily reliant on Nagios XI for monitoring critical infrastructure are particularly at risk. Environments with weak authentication practices or inadequate access controls to the Nagios XI web interface are also more vulnerable. Shared hosting environments where multiple users share a Nagios XI instance should be prioritized for patching.

• php: Examine Nagios XI web server access logs for unusual requests targeting NagVis configuration endpoints (e.g., /nagvis/config.php). • php: Use grep to search the nagvis.conf file for unexpected or suspicious configuration entries. • generic web: Monitor Nagios XI system resources (CPU, memory) for spikes that could indicate exploitation attempts. • generic web: Check for unauthorized modifications to Nagios XI user accounts or permissions.

1. 2025-10-30Disclosure

   disclosure

1. Gereserveerd2025-10-22
2. Gepubliceerd2025-10-30
3. Gewijzigd2025-11-17
4. EPSS bijgewerkt2026-03-23

The primary mitigation for CVE-2024-14004 is to upgrade Nagios XI to version 2024R1.2 or later. If an immediate upgrade is not possible, review and restrict access to the nagvis.conf file, ensuring only authorized users can modify it. Implement strict input validation on all NagVis configuration parameters to prevent malicious data from being injected. Consider using a Web Application Firewall (WAF) to filter potentially malicious requests targeting NagVis configuration endpoints. After upgrading, confirm the fix by attempting to manipulate NagVis configuration as a standard authenticated user; the changes should be rejected.