CVE-2022-23658
📋 TL;DR
CVE-2022-23658 is a critical remote authentication bypass vulnerability in Aruba ClearPass Policy Manager that allows attackers to bypass authentication mechanisms and gain unauthorized access to the system. This affects ClearPass Policy Manager versions 6.10.4 and below, 6.9.9 and below, 6.8.9-HF2 and below, and all 6.7.x versions.
💻 Affected Systems
- Aruba ClearPass Policy Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the ClearPass Policy Manager system, allowing attackers to gain administrative access, modify network policies, intercept authentication data, and potentially pivot to other network resources.
Likely Case
Unauthorized access to the ClearPass management interface, enabling attackers to view or modify network authentication policies, user credentials, and device configurations.
If Mitigated
Limited impact if system is isolated behind firewalls with strict network segmentation and access controls, though the vulnerability still exists.
🎯 Exploit Status
The vulnerability allows remote exploitation without authentication, making it highly attractive to attackers. While no public PoC exists, the CVSS 10.0 score indicates trivial exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.10.5, 6.9.10, 6.8.9-HF3, or later versions
Vendor Advisory: https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-007.txt
Restart Required: Yes
Instructions:
1. Download the appropriate patch from Aruba support portal. 2. Backup current configuration. 3. Apply the patch following Aruba's upgrade documentation. 4. Restart the ClearPass Policy Manager. 5. Verify the update was successful.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ClearPass Policy Manager behind firewalls with strict access controls to limit exposure
Access Restriction
allImplement strict network access controls to limit which IP addresses can reach the ClearPass management interface
🧯 If You Can't Patch
- Immediately isolate the ClearPass system from internet access and restrict internal network access to only necessary administrative IPs
- Implement additional authentication layers such as VPN or jump host requirements for accessing the ClearPass management interface
🔍 How to Verify
Check if Vulnerable:
Check the ClearPass version via the web interface (Admin > Support > About) or CLI command 'show version'Check Version:
show versionVerify Fix Applied:
Verify the version is 6.10.5, 6.9.10, 6.8.9-HF3 or later, and test authentication mechanisms📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts from unexpected IPs
- Multiple failed login attempts followed by successful access from same source
- Administrative actions from non-admin users
Network Indicators:
- Unusual traffic patterns to ClearPass management interface
- Authentication bypass attempts to ClearPass endpoints
SIEM Query:
source="clearpass" AND (event_type="authentication" AND result="success" AND user="unknown") OR (event_type="admin_action" AND user NOT IN admin_users)