CVE-2022-23672
📋 TL;DR
This CVE describes an authenticated remote command injection vulnerability in Aruba ClearPass Policy Manager. Attackers with valid credentials can execute arbitrary commands on affected systems, potentially compromising the entire ClearPass deployment. Organizations running vulnerable versions of ClearPass Policy Manager are affected.
💻 Affected Systems
- Aruba ClearPass Policy Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands with system privileges, steal sensitive data, deploy ransomware, or pivot to other network resources.
Likely Case
Attackers with stolen or compromised credentials gain persistent access to the ClearPass system, potentially intercepting authentication traffic or modifying network access policies.
If Mitigated
With proper network segmentation, credential protection, and monitoring, impact is limited to the ClearPass system itself without lateral movement.
🎯 Exploit Status
Exploitation requires valid credentials but command injection vulnerabilities are typically straightforward to weaponize once discovered.
🛠️ 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 patch following Aruba's upgrade documentation. 4. Restart the ClearPass appliance. 5. Verify successful upgrade and functionality.
🔧 Temporary Workarounds
Restrict administrative access
allLimit administrative access to ClearPass to only trusted IP addresses and users
Configure firewall rules to restrict access to ClearPass management interface
Implement credential protection
allEnforce strong passwords, multi-factor authentication, and regular credential rotation for all administrative accounts
Enable MFA in ClearPass Admin UI: Administration > Administrators > Edit User > Enable MFA
🧯 If You Can't Patch
- Isolate ClearPass system in a dedicated VLAN with strict firewall rules limiting inbound/outbound connections
- Implement network monitoring and IDS/IPS rules to detect command injection attempts and unusual administrative activity
🔍 How to Verify
Check if Vulnerable:
Check ClearPass version in Admin UI: Administration > Support > About. Compare against affected versions list.Check Version:
ssh admin@clearpass-host 'cat /etc/version' or check Admin UIVerify Fix Applied:
Verify version shows 6.10.5, 6.9.10, 6.8.9-HF3 or later in Admin UI. Test administrative functionality remains operational.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful login
- Administrative actions from unexpected IP addresses or users
Network Indicators:
- Unusual outbound connections from ClearPass appliance
- Traffic patterns suggesting data exfiltration
- Unexpected administrative protocol traffic
SIEM Query:
source="clearpass" AND (event_type="command_execution" OR user="admin" AND action="shell")