1. Introduction
The Eaton Network Shutdown Module view_list.php paneStatusListSort… vulnerability allows remote attackers to execute arbitrary PHP code on affected web servers. This poses a critical risk as it could lead to complete system compromise and data theft. Systems running vulnerable versions of the Eaton Network Shutdown Module are at risk, particularly those exposed directly to the internet. Successful exploitation leads to administrative privileges being gained on the server.
2. Technical Explanation
The vulnerability stems from insufficient input validation in the ‘paneStatusListSortBy’ parameter of the ‘view_list.php’ script. This allows an attacker to inject and execute arbitrary PHP code via the ‘eval()’ function. Exploitation requires a configured power device on the system, and is likely dependent on two other unconfirmed issues.
- Exploit mechanism: An attacker crafts a malicious HTTP request with a crafted ‘paneStatusListSortBy’ parameter containing PHP code, which is then executed by the server. For example, sending a request like
http://example.com/view_list.php?paneStatusListSortBy=system('whoami')could execute the ‘whoami’ command on the server. - Scope: Affected systems are those running vulnerable versions of the Eaton Network Shutdown Module.
3. Detection and Assessment
Confirming vulnerability requires checking the version of the installed Eaton Network Shutdown Module. A thorough assessment involves reviewing web server logs for suspicious activity related to ‘view_list.php’.
- Quick checks: Access the Eaton Network Shutdown Module’s web interface and check the “About” or “Version Information” section for the installed version.
- Scanning: Nessus vulnerability ID 54161 can detect this issue. Other scanners may have similar signatures.
- Logs and evidence: Examine web server access logs for requests to ‘view_list.php’ with unusual parameters in the ‘paneStatusListSortBy’ field. Look for attempts to inject PHP code or execute commands.
# Example command placeholder:
# No specific command available, check Eaton Network Shutdown Module version via web interface.
4. Solution / Remediation Steps
Currently there is no known solution for this vulnerability. Mitigation focuses on limiting exposure and monitoring for exploitation attempts.
4.1 Preparation
- Services: No services need to be stopped at this time.
- Roll back plan: Restore from the pre-change backup if issues arise. Change window approval is recommended due to potential service disruption.
4.2 Implementation
- Step 1: Monitor web server logs for suspicious activity related to ‘view_list.php’.
- Step 2: Restrict access to the Eaton Network Shutdown Module’s web interface to trusted IP addresses only.
4.3 Config or Code Example
No configuration changes are available at this time.
Before
After
4.4 Security Practices Relevant to This Vulnerability
Several security practices can help mitigate the risk of this vulnerability type. Least privilege limits the impact of successful exploitation, while input validation prevents malicious code injection.
- Practice 1: Implement least privilege access controls to limit the permissions granted to web server processes and users.
- Practice 2: Enforce strict input validation on all user-supplied data to prevent code injection attacks.
4.5 Automation (Optional)
No automation scripts are available at this time.
5. Verification / Validation
Verify the fix by monitoring web server logs for continued exploitation attempts and confirming restricted access to the Eaton Network Shutdown Module’s web interface. A negative test involves attempting a malicious request from an untrusted IP address.
- Post-fix check: Confirm that requests to ‘view_list.php’ with suspicious parameters are blocked by the firewall or intrusion detection system.
- Re-test: Attempt to exploit the vulnerability from an untrusted IP address and verify that the request is blocked.
- Smoke test: Ensure that legitimate users can still access the Eaton Network Shutdown Module’s web interface and perform their intended tasks.
- Monitoring: Monitor web server logs for any attempts to access ‘view_list.php’ with unusual parameters, indicating potential exploitation attempts.
# Post-fix command and expected output
# No specific command available, check firewall or IDS logs for blocked requests.
6. Preventive Measures and Monitoring
Regular security baselines and pipeline checks can help prevent similar vulnerabilities in the future. A sensible patch review cycle is also important.
- Baselines: Update your web server security baseline to include input validation rules and access controls.
- Asset and patch process: Implement a regular patch review cycle for all software, including the Eaton Network Shutdown Module.
7. Risks, Side Effects, and Roll Back
Restricting access to the web interface may impact legitimate users if not configured correctly. A roll back involves restoring the original firewall or intrusion detection system rules.
- Risk or side effect 1: Restricting access too aggressively may block legitimate user traffic.
- Risk or side effect 2: Incorrectly configured firewall rules could create unintended security gaps.
- Roll back: Restore the previous firewall and intrusion detection system configuration.
8. References and Resources
Official advisories and trusted documentation are crucial for staying informed about this vulnerability.
- Vendor advisory or bulletin: SecurityFocus BID 54161
- NVD or CVE entry: Not available at this time.
- Product or platform documentation relevant to the fix: No specific documentation is available at this time.