1. Introduction
A game server has been detected on the remote host, specifically a Call of Duty game server. This indicates an unauthorised service running which could introduce security risks and violate corporate policy. Systems typically affected are servers used for gaming or those that have had software installed without proper IT oversight. A successful exploit could lead to data compromise, denial-of-service, or unauthorized access.
2. Technical Explanation
The vulnerability is the presence of a Call of Duty game server running on a host within your network. This isn’t an inherent technical flaw in software but rather a policy violation and potential security risk. An attacker could exploit vulnerabilities within the game server itself, or use it as a pivot point to access other systems on the network. There is no specific CVE associated with this detection; it’s a configuration issue. For example, an attacker might attempt to compromise the server to gain access to sensitive data stored on it or launch attacks against other hosts.
- Root cause: Unapproved software installation and operation of a game server on a corporate network.
- Exploit mechanism: An attacker could exploit known vulnerabilities in the Call of Duty server software, potentially gaining remote code execution.
- Scope: Any system running a Call of Duty game server.
3. Detection and Assessment
To confirm whether a system is vulnerable, first check for the presence of the Call of Duty server process. A thorough method would involve network port scanning to identify open ports associated with the service.
- Quick checks: Use task manager or command line tools to look for processes related to Call of Duty servers (e.g., `codsrv.exe`).
- Scanning: Nessus plugin ID 16783 can detect Call of Duty server installations, but results should be verified manually.
- Logs and evidence: Check system event logs for events related to the installation or startup of Call of Duty server software.
tasklist | findstr codsrv.exe4. Solution / Remediation Steps
Provide precise, ordered steps to fix the issue. Make steps small, testable, and safe to roll back. Only include steps that apply to this vulnerability.
4.1 Preparation
- Ensure you have appropriate permissions to uninstall software and modify firewall rules. A roll back plan involves restoring from the snapshot or using the system restore point.
- Change windows may be needed depending on corporate policy, requiring approval from IT management.
4.2 Implementation
- Step 1: Uninstall the Call of Duty server software through Control Panel > Programs and Features.
- Step 2: Verify that all related files and directories have been removed.
- Step 3: Block incoming traffic to ports commonly used by Call of Duty servers (e.g., 27015, 27016) using your firewall.
4.3 Config or Code Example
Before
After
4.4 Security Practices Relevant to This Vulnerability
List only practices that directly address this vulnerability type. Use neutral wording and examples instead of fixed advice. For example: least privilege, input validation, safe defaults, secure headers, patch cadence. If a practice does not apply, do not include it.
- Practice 1: Software inventory management to prevent unapproved software installations.
- Practice 2: Least privilege access control to limit the impact of compromised systems.
4.5 Automation (Optional)
5. Verification / Validation
Explain how to confirm the fix worked. Provide commands, expected outputs, and a short negative test if possible. Include a simple service smoke test.
- Post-fix check: Run `tasklist | findstr codsrv.exe` again; no output should be returned.
- Re-test: Re-run the scanning method from section 3, and confirm that the Call of Duty server is no longer detected.
- Smoke test: Verify that other essential network services are still functioning correctly.
- Monitoring: Monitor firewall logs for any blocked traffic to ports associated with Call of Duty servers as an example alert.
tasklist | findstr codsrv.exe6. Preventive Measures and Monitoring
Suggest only measures that are relevant to the vulnerability type. Use “for example” to keep advice conditional, not prescriptive.
- Baselines: Update security baselines to include a list of prohibited software applications.
- Pipelines: Implement application control solutions in CI/CD pipelines to prevent unapproved software from being deployed.
- Asset and patch process: Regularly review installed software on systems to identify and remove unauthorized applications.
7. Risks, Side Effects, and Roll Back
- Roll back: Restore from the system snapshot created in step 4.1, or use System Restore to revert changes.
8. References and Resources
- Vendor advisory or bulletin: https://www.callofduty.com/hub