CVE-2025-2726
Remediation/Mitigation Strategy for CVE-2025-2726: H3C Magic Routers Command Injection Vulnerability
1. Vulnerability Description:
- Vulnerability: Command Injection
- Affected Products: H3C Magic NX15, Magic NX30 Pro, Magic NX400, Magic R3010, and Magic BE18000 up to V100R014
- Affected Component: HTTP POST Request Handler -
/api/esps - Description: A critical command injection vulnerability exists in the HTTP POST Request Handler at
/api/espsof H3C Magic routers. By manipulating this endpoint, an attacker can inject and execute arbitrary commands on the underlying operating system of the router. This allows for complete compromise of the device.
2. Severity:
- CVSS Score: 9.0 (Critical) - Based on the information provided (Base Score = 9.0, Impact Subscore = 9.0, Exploitability Subscore = 10.0)
- Severity Level: Critical
- Rationale: The vulnerability allows for remote, unauthenticated command execution, leading to complete system compromise. A successful exploit grants the attacker full control over the device, potentially leading to data theft, network disruption, or use of the router as a botnet node.
3. Known Exploit:
- Exploit Availability: Publicly available exploit exists.
- Exploitability: Easy. Given the public availability of the exploit, exploitation requires minimal technical expertise.
4. Remediation/Mitigation Strategy:
Since the vendor is unresponsive, the following mitigation strategies should be implemented immediately.
A. Immediate Actions (within 24-48 hours):
- Isolate Affected Devices:
- Immediately isolate affected H3C Magic routers from the network if possible. This prevents further exploitation and lateral movement of an attacker within the network.
- Firewall Restrictions:
- Implement strict firewall rules to limit access to the
/api/espsendpoint and the router’s management interface. Block all incoming traffic to the router’s WAN interface from untrusted sources if possible. - Specifically, if the router is only used within the local network, restrict access to the web interface from the WAN side.
- Implement strict firewall rules to limit access to the
- Network Segmentation:
- Segment the network to limit the potential impact of a compromised router. Place the router in a VLAN with limited access to sensitive resources.
- Monitoring:
- Implement network intrusion detection systems (NIDS) or intrusion prevention systems (IPS) to monitor for exploitation attempts. Look for suspicious POST requests to the
/api/espsendpoint. - Monitor router logs for unusual activity, such as unexpected processes or network connections.
- Implement network intrusion detection systems (NIDS) or intrusion prevention systems (IPS) to monitor for exploitation attempts. Look for suspicious POST requests to the
- Password Changes (If Accessible):
- If possible to access the router’s configuration, immediately change the default administrative password to a strong, unique password. While this may not prevent command injection itself, it can help prevent unauthorized access to other router functions.
B. Longer-Term Mitigation (within 1-2 weeks):
- Alternative Router:
- Replace the affected H3C Magic routers with alternative models from vendors with a better security track record and active security support. This is the most effective long-term solution.
- Custom Firmware (If Available and Trusted):
- Research and evaluate third-party open-source firmware alternatives (e.g., OpenWRT, DD-WRT). Only consider this option if the firmware is from a reputable source with a strong security focus and active development. Flashing custom firmware can void warranties and potentially brick the device, so proceed with extreme caution and only if you are technically proficient. Check for compatibility before flashing!
- Virtual Patching:
- If a web application firewall (WAF) or similar security solution is in place, consider implementing a virtual patch to block malicious requests targeting the
/api/espsendpoint. This may involve creating custom rules to filter out requests containing command injection payloads.
- If a web application firewall (WAF) or similar security solution is in place, consider implementing a virtual patch to block malicious requests targeting the
- Vulnerability Scanning:
- Conduct regular vulnerability scans of the network to identify other potentially vulnerable devices.
C. Ongoing Actions:
- Security Awareness:
- Educate users about the risks of vulnerable devices and the importance of strong passwords and network security practices.
- Stay Informed:
- Continuously monitor security advisories and vulnerability databases for new threats and updates related to H3C routers or other network devices.
5. Disclaimer:
- This remediation strategy is based on the provided information. The effectiveness of these measures depends on the specific network environment and configuration.
- Replacing the vulnerable device is the most reliable solution for a critical vulnerability with a publicly available exploit and an unresponsive vendor.
Note: This response is for informational purposes only and does not constitute professional security advice. Consult with a qualified security professional for assistance in implementing a comprehensive security strategy.
Assigner
- VulDB [email protected]
Date
- Published Date: 2025-03-25 02:00:12
- Updated Date: 2025-03-25 03:15:16