How to remediate – Aeonian Dreams Detection

1. Introduction

Aeonian Dreams Detection indicates a game server is running on a remote host. This poses a risk as unauthorised software can introduce security vulnerabilities and may violate organisational policies. Systems commonly affected are servers, particularly those with relaxed security controls or open network access. A successful compromise could lead to data breaches, service disruption, or malware infection.

2. Technical Explanation

The vulnerability arises from the presence of an ‘Aeonian Dreams’ game server installation on a system. This software may not be sanctioned by the organisation and could contain security flaws. An attacker could exploit vulnerabilities within the game server to gain access to the host system or network. There is no known CVE associated with this detection, as it identifies the *presence* of software rather than a specific flaw in that software.

• Root cause: Unauthorised software installation on a managed host.
• Exploit mechanism: An attacker could exploit vulnerabilities within the Aeonian Dreams server to gain remote code execution or access sensitive data.
• Scope: Any system running the ‘Aeonian Dreams’ game server is potentially affected.

3. Detection and Assessment

Confirming whether a system is vulnerable involves identifying if the ‘Aeonian Dreams’ game server is installed. A quick check can be performed by examining running processes, while a thorough method requires inspecting software installations.

• Quick checks: Use the following command to list running processes and identify the Aeonian Dreams server process: ps aux | grep aeonian
• Scanning: Nessus vulnerability scan ID 168749 can detect this issue. This is an example only, other scanners may provide similar functionality.
• Logs and evidence: Check system logs for installation or execution of Aeonian Dreams server components. Specific log files will depend on the operating system and installation method.

ps aux | grep aeonian

4. Solution / Remediation Steps

The solution involves removing the ‘Aeonian Dreams’ game server if its use is not compliant with organisational policies.

4.1 Preparation

• Ensure you have administrative privileges to remove software from the host. A roll back plan involves restoring the backup if necessary.
• Change windows may be required depending on business impact and approval processes.

4.2 Implementation

1. Step 1: Stop the Aeonian Dreams server service using the appropriate operating system command (e.g., systemctl stop aeoniand or service aeoniand stop).
2. Step 2: Remove the Aeonian Dreams installation directory and associated files. The location will vary depending on the installation method, but common locations include /opt/aeonian or /usr/local/aeonian. Use commands like rm -rf /opt/aeonian (use caution with rm -rf).
3. Step 3: Verify that all Aeonian Dreams processes are terminated and no related files remain on the system.

4.3 Config or Code Example

Before

ls /opt/aeonian  # Shows Aeonian Dreams installation files

After

ls /opt/aeonian # Should return "No such file or directory" if removed successfully.

4.4 Security Practices Relevant to This Vulnerability

Several security practices can help prevent this issue.

• Practice 1: Software inventory management helps identify and control unauthorised software installations.
• Practice 2: Least privilege restricts user access, limiting the impact of potential compromises.

4.5 Automation (Optional)

#!/bin/bash
# This script removes the Aeonian Dreams installation directory. Use with caution!
if [ -d "/opt/aeonian" ]; then
  echo "Removing Aeonian Dreams installation..."
  rm -rf /opt/aeonian
fi

5. Verification / Validation

Confirm the fix by verifying that the ‘Aeonian Dreams’ server is no longer installed and running.

• Post-fix check: Run ps aux | grep aeonian. The output should be empty, indicating no Aeonian Dreams processes are running.
• Re-test: Re-run a vulnerability scan (e.g., Nessus ID 168749) to confirm the issue is resolved.
• Smoke test: Verify that other essential services on the system continue to function as expected.
• Monitoring: Monitor system logs for any attempts to reinstall or execute Aeonian Dreams server components.

ps aux | grep aeonian # Expected output: (empty)

6. Preventive Measures and Monitoring

Preventive measures include maintaining a software inventory and implementing application control policies.

• Baselines: Update security baselines to explicitly prohibit the installation of unauthorised software like Aeonian Dreams.
• Pipelines: Implement application whitelisting or blacklisting in CI/CD pipelines to prevent deployment of unapproved applications.
• Asset and patch process: Regularly review installed software on systems to identify and remove unauthorized programs.

7. Risks, Side Effects, and Roll Back

Removing the ‘Aeonian Dreams’ server may disrupt any services or functionality that depend on it.

• Roll back: Restore the system from backup if necessary, or reinstall the Aeonian Dreams server if required (not recommended unless approved).

8. References and Resources

• Vendor advisory or bulletin: http://www.nessus.org/u?e70fb3ce