CVE-2023-25591
📋 TL;DR
This vulnerability in ClearPass Policy Manager's web interface allows authenticated low-privilege users to access sensitive information. Attackers could use this information to potentially escalate privileges on the ClearPass instance. Organizations using affected ClearPass versions are at risk.
💻 Affected Systems
- Aruba ClearPass Policy Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative access to ClearPass, compromising network authentication and policy enforcement systems, potentially leading to full network compromise.
Likely Case
Attackers access sensitive configuration data or credentials that could be used for lateral movement or privilege escalation within the network.
If Mitigated
Information disclosure limited to non-critical data with minimal impact on overall security posture.
🎯 Exploit Status
Requires low-privilege authenticated access; exploitation likely involves simple web requests
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.10.9, 6.11.6, 6.12.2 or later
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2023-003.txt
Restart Required: Yes
Instructions:
1. Backup ClearPass configuration. 2. Download appropriate patch from Aruba support portal. 3. Apply patch via ClearPass web interface or CLI. 4. Restart ClearPass services.
🔧 Temporary Workarounds
Restrict Access to Management Interface
allLimit access to ClearPass web management interface to trusted IP addresses only
Configure firewall rules to restrict access to ClearPass management ports (TCP 443, 22)
Implement Least Privilege
allReview and minimize user accounts with access to ClearPass management interface
Review ClearPass user roles and remove unnecessary administrative privileges
🧯 If You Can't Patch
- Implement network segmentation to isolate ClearPass from general network access
- Enable detailed logging and monitoring of ClearPass management interface access
🔍 How to Verify
Check if Vulnerable:
Check ClearPass version via web interface (Administration > Support > About) or CLI command 'show version'Check Version:
show versionVerify Fix Applied:
Verify version is 6.10.9, 6.11.6, 6.12.2 or later and test authenticated access controls📡 Detection & Monitoring
Log Indicators:
- Unusual authenticated user accessing sensitive configuration endpoints
- Multiple failed privilege escalation attempts from low-privilege accounts
Network Indicators:
- Unusual traffic patterns to ClearPass management interface from unexpected sources
SIEM Query:
source="clearpass" AND (event_type="config_access" OR user_privilege="low") AND resource="sensitive"