CVE-2025-2731

Remediation/Mitigation Strategy for CVE-2025-2731 - H3C Magic Routers Command Injection

This document outlines a remediation/mitigation strategy to address the command injection vulnerability identified as CVE-2025-2731 affecting H3C Magic NX15, Magic NX30 Pro, Magic NX400, Magic R3010 and Magic BE18000 routers up to version V100R014.

1. Vulnerability Description:

  • CVE ID: CVE-2025-2731
  • Description: A critical command injection vulnerability exists in H3C Magic NX15, Magic NX30 Pro, Magic NX400, Magic R3010 and Magic BE18000 routers. Specifically, the /api/wizard/getDualbandSync endpoint is vulnerable via HTTP POST Request manipulation. This allows a remote attacker to inject and execute arbitrary commands on the system.
  • Affected Products: H3C Magic NX15, Magic NX30 Pro, Magic NX400, Magic R3010 and Magic BE18000 routers up to version V100R014.
  • Attack Vector: Remote. An attacker can exploit this vulnerability over the network.

2. Severity:

  • CVSS Score: 9.0 (Critical) based on the provided information. This score indicates a high potential for significant impact.
  • Severity Level: Critical. Command injection vulnerabilities allow for complete system compromise, including data theft, modification, and denial of service.

3. Known Exploit Information:

  • Exploit Availability: A public exploit exists and may be used. This drastically increases the risk, as attackers can readily exploit the vulnerability.
  • Ease of Exploitation: High, due to the existence of a public exploit.

4. Remediation/Mitigation Strategies:

Given the critical severity and the availability of a public exploit, immediate action is required.

A. Immediate Mitigation (Short-Term):

  1. Firewall Rules: Implement strict firewall rules to restrict access to the affected routers.
    • Recommendation: Block all incoming traffic to the affected routers from untrusted networks. If remote access is absolutely necessary, restrict it to a specific IP address range via VPN.
  2. Disable Remote Management (If Possible): If remote management is not required, disable it entirely to eliminate the remote attack vector. Check router configuration for remote admin access settings (e.g., “Remote Management,” “Web Access from WAN”).
  3. Monitor Network Traffic: Implement intrusion detection systems (IDS) and intrusion prevention systems (IPS) to monitor network traffic for suspicious activity related to this vulnerability. Look for unusual HTTP POST requests to the /api/wizard/getDualbandSync endpoint.
  4. Web Application Firewall (WAF): If the H3C router is used as a web server or exposes web applications through it, consider implementing a WAF to filter malicious requests targeting the /api/wizard/getDualbandSync endpoint. While this might not be directly applicable to a router’s core function, it’s worth considering if custom applications are running on the device.

B. Long-Term Remediation:

  1. Firmware Update: Crucially, contact H3C for a firmware update. The vulnerability report indicates they were unresponsive. However, continue to attempt contact and pressure them for a patch. This is the only effective way to permanently fix the vulnerability.
  2. Router Replacement (If No Firmware Update Available): If H3C does not provide a firmware update to address the vulnerability in a timely manner, consider replacing the affected routers with alternative devices from a different vendor. This is a drastic measure, but may be necessary to mitigate the risk.
  3. Vendor Communication: Maintain contact with H3C and request updates on their progress in addressing the vulnerability. Document all communication.
  4. Vulnerability Scanning: Implement regular vulnerability scanning of your network to identify and address potential vulnerabilities proactively.

C. Post-Remediation Actions:

  1. Verify Mitigation Effectiveness: After implementing the mitigation strategies, verify their effectiveness by attempting to exploit the vulnerability in a controlled environment.
  2. Continuous Monitoring: Continuously monitor the network for suspicious activity related to the vulnerability.
  3. Review Incident Response Plan: Review and update your incident response plan to include procedures for handling command injection vulnerabilities.

Important Considerations:

  • Lack of Vendor Response: The report indicates that H3C has not responded to the vulnerability disclosure. This increases the urgency of implementing mitigation strategies. Continue to attempt contact, but prioritize the mitigation steps outlined above.
  • End-of-Life (EOL) Devices: If the affected routers are end-of-life and no longer receiving firmware updates, replacement is the recommended course of action.
  • “Zero Trust” Principles: Consider implementing “Zero Trust” network principles to minimize the impact of a potential breach. This involves verifying every user and device before granting access to network resources.

This remediation/mitigation strategy is a starting point and should be customized to fit your specific environment and risk tolerance. Consult with security professionals for assistance in implementing these strategies.

Assigner

Date

  • Published Date: 2025-03-25 03:31:04
  • Updated Date: 2025-03-25 14:15:31

More Details

CVE-2025-2731