CVE-2025-67255
📋 TL;DR
NagiosXI 2026R1.0.1 build 1762361101 contains a SQL injection vulnerability in dashboard parameters that lacks proper input filtering. Any authenticated user can exploit this to execute arbitrary SQL commands against the database. This affects all organizations running the vulnerable NagiosXI version.
💻 Affected Systems
- NagiosXI
📦 What is this software?
Nagios Xi by Nagios
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation, remote code execution, and potential full system takeover.
Likely Case
Data exfiltration, privilege escalation to administrative accounts, and potential lateral movement within the network.
If Mitigated
Limited impact due to proper input validation, database permissions, and network segmentation restricting exploit effectiveness.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once credentials are obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.nagios.org/
Restart Required: No
Instructions:
1. Monitor Nagios vendor advisory for patch release. 2. Apply patch when available. 3. Test in non-production environment first. 4. Deploy to production systems.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement strict input validation and parameterized queries for dashboard parameters
Requires code modification - no simple command
Database Permission Reduction
linuxRestrict database user permissions to minimum required functionality
ALTER USER 'nagiosxi_user'@'localhost' WITH GRANT OPTION;
REVOKE ALL PRIVILEGES ON *.* FROM 'nagiosxi_user'@'localhost';
GRANT SELECT, INSERT, UPDATE, DELETE ON nagiosxi.* TO 'nagiosxi_user'@'localhost';
🧯 If You Can't Patch
- Implement web application firewall (WAF) with SQL injection rules
- Restrict network access to NagiosXI interface to trusted IPs only
🔍 How to Verify
Check if Vulnerable:
Check NagiosXI version via web interface or command: grep 'nagiosxi_version' /usr/local/nagiosxi/var/xiversionCheck Version:
grep 'nagiosxi_version' /usr/local/nagiosxi/var/xiversionVerify Fix Applied:
Verify version is updated beyond 2026R1.0.1 build 1762361101 and test SQL injection attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by dashboard parameter manipulation
- Unusual user activity from authenticated sessions
Network Indicators:
- SQL injection patterns in HTTP requests to dashboard endpoints
- Unusual database connections from NagiosXI host
SIEM Query:
source="web_access.log" AND (url="*dashboard*" AND (param="*' OR *" OR param="*;--*" OR param="*UNION*"))