CVE-2023-25593
📋 TL;DR
This vulnerability allows remote attackers to execute reflected cross-site scripting (XSS) attacks against users of the ClearPass Policy Manager web interface. Successful exploitation enables arbitrary script execution in victims' browsers within the management interface context. Organizations using vulnerable versions of ClearPass Policy Manager are affected.
💻 Affected Systems
- Aruba ClearPass Policy Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker steals administrator credentials, gains full administrative access to ClearPass Policy Manager, and potentially compromises the entire network authentication infrastructure.
Likely Case
Attacker steals session cookies or credentials of authenticated users, leading to unauthorized access to the management interface and potential policy manipulation.
If Mitigated
Limited impact due to network segmentation, proper access controls, and user awareness preventing successful social engineering.
🎯 Exploit Status
Requires social engineering to trick authenticated users into clicking malicious links. No authentication bypass needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.11.5, 6.10.8, or 6.9.12
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2023-003.txt
Restart Required: Yes
Instructions:
1. Download appropriate patch version from Aruba support portal. 2. Backup current configuration. 3. Apply patch via ClearPass web interface or CLI. 4. Restart ClearPass services.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement additional input validation and output encoding for web interface parameters
Custom implementation required based on specific deployment
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to restrict script execution
- Use web application firewall (WAF) with XSS protection rules and restrict management interface access to trusted IPs only
🔍 How to Verify
Check if Vulnerable:
Check ClearPass version via web interface (Admin > Support > About) or CLI command 'show version'Check Version:
show versionVerify Fix Applied:
Verify version is 6.11.5, 6.10.8, 6.9.12 or later and test XSS payloads no longer execute📡 Detection & Monitoring
Log Indicators:
- Unusual parameter values in web requests
- Multiple failed login attempts following suspicious requests
- Administrative actions from unexpected user sessions
Network Indicators:
- HTTP requests with script tags or JavaScript in parameters to management interface
- Outbound connections from ClearPass to unexpected destinations
SIEM Query:
source="clearpass" AND (http_uri="*<script>*" OR http_params="*javascript:*")