CVE-2018-8954
📋 TL;DR
CVE-2018-8954 is a critical remote code execution vulnerability in CA Workload Control Center that allows attackers to execute arbitrary code by sending a specially crafted HTTP request. This affects all versions before r11.4 SP6, potentially compromising the entire system.
💻 Affected Systems
- CA Workload Control Center
- CA Workload Automation AE
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the server, allowing data theft, lateral movement, and persistent backdoor installation.
Likely Case
Remote code execution leading to service disruption, data exfiltration, and potential ransomware deployment.
If Mitigated
Limited impact with proper network segmentation and strict access controls, potentially only affecting the application service.
🎯 Exploit Status
The vulnerability requires no authentication and has a simple exploitation path via crafted HTTP requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: r11.4 SP6 or later
Vendor Advisory: https://support.ca.com/us/product-content/recommended-reading/security-notices/ca20180329-01--security-notice-for-ca-workload-automation-ae.html
Restart Required: Yes
Instructions:
1. Download and install CA Workload Control Center r11.4 SP6 or later from CA support portal. 2. Apply the patch following vendor documentation. 3. Restart the CA Workload Control Center service. 4. Verify the patch is applied correctly.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to CA Workload Control Center to only trusted IP addresses using firewall rules.
iptables -A INPUT -p tcp --dport <port> -s <trusted_ip> -j ACCEPT
iptables -A INPUT -p tcp --dport <port> -j DROP
Web Application Firewall
allDeploy a WAF with rules to block malicious HTTP requests targeting this vulnerability.
🧯 If You Can't Patch
- Isolate the system in a separate network segment with strict access controls
- Implement application-level monitoring and alerting for suspicious HTTP requests
🔍 How to Verify
Check if Vulnerable:
Check the installed version of CA Workload Control Center. If version is earlier than r11.4 SP6, the system is vulnerable.Check Version:
Check the CA Workload Control Center administration interface or consult vendor documentation for version verification commands.Verify Fix Applied:
Verify the version is r11.4 SP6 or later and test that crafted HTTP requests no longer execute arbitrary code.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests with crafted payloads
- Unexpected process execution from web service context
- Error logs showing malformed request handling
Network Indicators:
- HTTP requests with unusual patterns or payloads to CA Workload Control Center endpoints
- Outbound connections from the service to unexpected destinations
SIEM Query:
source="ca_workload_logs" AND (http_request contains suspicious_pattern OR process_execution from web_user)🔗 References
- http://www.securityfocus.com/bid/103742
- http://www.securitytracker.com/id/1040605
- https://support.ca.com/us/product-content/recommended-reading/security-notices/ca20180329-01--security-notice-for-ca-workload-automation-ae.html
- http://www.securityfocus.com/bid/103742
- http://www.securitytracker.com/id/1040605
- https://support.ca.com/us/product-content/recommended-reading/security-notices/ca20180329-01--security-notice-for-ca-workload-automation-ae.html
