CVE-2015-4664
📋 TL;DR
CVE-2015-4664 is an improper input validation vulnerability in CA Privileged Access Manager (formerly Xceedium Xsuite) that allows remote attackers to execute arbitrary commands on affected systems. This vulnerability affects CA Privileged Access Manager 2.4.4.4 and earlier versions. Attackers can exploit this without authentication to gain complete control of vulnerable systems.
💻 Affected Systems
- CA Privileged Access Manager
- Xceedium Xsuite
📦 What is this software?
Xsuite by Xceedium
Xsuite by Xceedium
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, privilege escalation to root/administrator, lateral movement within network, and data exfiltration.
Likely Case
Remote attackers gain shell access to vulnerable systems, install backdoors, steal credentials, and pivot to other network resources.
If Mitigated
Attackers are blocked at network perimeter or detected before establishing persistence.
🎯 Exploit Status
Public exploit code is available and trivial to use. Multiple exploit variants exist in public repositories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.4.4.5 and later
Vendor Advisory: https://support.ca.com/us/product-content/recommended-reading/security-notices/ca20180614-01--security-notice-for-ca-privileged-access-manager.html
Restart Required: Yes
Instructions:
1. Download patch from CA Support portal. 2. Backup current configuration. 3. Apply patch following CA documentation. 4. Restart services. 5. Verify patch installation.
🔧 Temporary Workarounds
Network Access Control
linuxRestrict network access to CA Privileged Access Manager to only trusted IP addresses and networks.
iptables -A INPUT -p tcp --dport [PAM_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [PAM_PORT] -j DROP
Web Application Firewall
allDeploy WAF with command injection protection rules to block exploitation attempts.
🧯 If You Can't Patch
- Isolate vulnerable systems in separate network segment with strict access controls
- Implement host-based intrusion detection and monitor for command execution attempts
🔍 How to Verify
Check if Vulnerable:
Check version in web interface or via SSH: grep -i version /opt/xceedium/xsuite/version.txtCheck Version:
cat /opt/xceedium/xsuite/version.txtVerify Fix Applied:
Verify version is 2.4.4.5 or later and test command injection payloads are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by successful command execution
- Suspicious process creation from web service
Network Indicators:
- HTTP requests containing command injection payloads to PAM endpoints
- Outbound connections from PAM server to unknown destinations
SIEM Query:
source="pam_logs" AND ("cmd.exe" OR "/bin/sh" OR "bash" OR "powershell") AND http_method="POST"🔗 References
- http://packetstormsecurity.com/files/132809/Xceedium-Xsuite-Command-Injection-XSS-Traversal-Escalation.html
- http://www.modzero.ch/advisories/MZ-15-02-Xceedium-Xsuite.txt
- https://support.ca.com/us/product-content/recommended-reading/security-notices/ca20180614-01--security-notice-for-ca-privileged-access-manager.html
- https://www.exploit-db.com/exploits/37708/
- http://packetstormsecurity.com/files/132809/Xceedium-Xsuite-Command-Injection-XSS-Traversal-Escalation.html
- http://www.modzero.ch/advisories/MZ-15-02-Xceedium-Xsuite.txt
- https://support.ca.com/us/product-content/recommended-reading/security-notices/ca20180614-01--security-notice-for-ca-privileged-access-manager.html
- https://www.exploit-db.com/exploits/37708/
