CVE-2024-14001
📋 TL;DR
Nagios XI versions before 2024R1.1.3 are vulnerable to cross-site scripting (XSS) in the Executive Summary Report component. Attackers can inject malicious scripts that execute in victims' browsers when viewing reports. This affects all Nagios XI administrators and users who access Executive Summary Reports.
💻 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 could steal administrator session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on victim machines.
Likely Case
Session hijacking leading to unauthorized access, data theft, or privilege escalation within Nagios XI.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Requires attacker to have access to Executive Summary Report input fields and victim to view the malicious report.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024R1.1.3 or later
Vendor Advisory: https://www.nagios.com/changelog/nagios-xi/
Restart Required: No
Instructions:
1. Backup current Nagios XI installation. 2. Download latest version from Nagios customer portal. 3. Run upgrade script following Nagios documentation. 4. Verify upgrade completed successfully.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement additional input validation for Executive Summary Report fields to reject script tags and special characters.
Output Encoding
allApply proper HTML encoding to all user-controlled data displayed in Executive Summary Reports.
🧯 If You Can't Patch
- Restrict access to Executive Summary Report functionality to trusted users only.
- Implement Content Security Policy (CSP) headers to restrict script execution sources.
🔍 How to Verify
Check if Vulnerable:
Check Nagios XI version via Admin > System Config > About Nagios XI. If version is earlier than 2024R1.1.3, system is vulnerable.Check Version:
cat /usr/local/nagiosxi/var/xiversionVerify Fix Applied:
After upgrade, verify version shows 2024R1.1.3 or later in About Nagios XI page.📡 Detection & Monitoring
Log Indicators:
- Unusual input patterns in Executive Summary Report logs
- Multiple failed report generation attempts with script-like content
Network Indicators:
- Unexpected external script loads in Nagios XI traffic
- Suspicious redirects from report pages
SIEM Query:
source="nagios" AND ("Executive Summary" OR "report") AND ("script" OR "javascript:" OR "onerror=" OR "onload=")