CVE-2013-10072
📋 TL;DR
Nagios XI versions before 2012R1.6 have an authorization flaw in Auto-Discovery functionality. Users with read-only permissions can access Auto-Discovery endpoints and pages that should require elevated privileges, exposing discovery results and allowing unauthorized access to discovery operations. This affects organizations using vulnerable Nagios XI versions for monitoring.
💻 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
Read-only users could access sensitive network discovery data, modify discovery operations, potentially leading to information disclosure about network infrastructure and unauthorized configuration changes.
Likely Case
Read-only users gain unintended access to network discovery results, exposing internal network topology and device information that should be restricted to administrators.
If Mitigated
With proper role-based access controls, only authorized administrators can access Auto-Discovery functionality, limiting exposure of sensitive network information.
🎯 Exploit Status
Exploitation requires authenticated read-only user access. Attackers with valid read-only credentials can directly access restricted Auto-Discovery endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2012R1.6 or later
Vendor Advisory: https://www.nagios.com/changelog/nagios-xi/
Restart Required: No
Instructions:
1. Backup current Nagios XI configuration. 2. Download and install Nagios XI 2012R1.6 or later from official Nagios website. 3. Follow upgrade instructions in Nagios XI documentation. 4. Verify authorization controls are properly enforced.
🔧 Temporary Workarounds
Disable Auto-Discovery functionality
allTemporarily disable Auto-Discovery feature to prevent unauthorized access while planning upgrade.
Navigate to Admin > System Extensions > Manage Components and disable Auto-Discovery
Restrict user access
allReview and minimize read-only user accounts, implement strict access controls.
Review user roles in Admin > Users and remove unnecessary read-only accounts
🧯 If You Can't Patch
- Implement network segmentation to isolate Nagios XI from sensitive network segments
- Enhance monitoring of Auto-Discovery access logs for unauthorized activity
🔍 How to Verify
Check if Vulnerable:
Check Nagios XI version in Admin > About. If version is earlier than 2012R1.6, system is vulnerable.Check Version:
Check Admin > About page in Nagios XI web interface or examine /usr/local/nagiosxi/var/xiversion fileVerify Fix Applied:
After upgrade, verify version is 2012R1.6 or later. Test with read-only user account that Auto-Discovery endpoints return proper authorization errors.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to Auto-Discovery endpoints by read-only users
- Access to /nagiosxi/admin/discovery.php or similar discovery pages by non-admin users
Network Indicators:
- HTTP requests to Auto-Discovery endpoints from non-admin user accounts
SIEM Query:
source="nagios_xi_logs" AND (uri_path="/nagiosxi/admin/discovery*" OR uri_path="/nagiosxi/includes/components/discovery*") AND user_role="read-only"