CVE-2025-3540: Critical Command Injection Vulnerability in H3C Magic

Overview

The vulnerability CVE-2025-3540 is a critical one that affects multiple versions of H3C Magic, including NX15, NX30 Pro, NX400, and R3010 up to V100R014. It is primarily located within the function FCGI_WizardProtoProcess of the file /api/wizard/getCapability and is associated with the HTTP POST Request Handler component. This vulnerability can lead to command injection attacks, potentially causing significant system compromise and data leakage. As the exploit is already disclosed to the public, it poses an increasing risk to the affected systems.

Vulnerability Summary

CVE ID: CVE-2025-3540
Severity: Critical (8.0 CVSS Score)
Attack Vector: Local Network
Privileges Required: High
User Interaction: Required
Impact: System Compromise and Data Leakage

Affected Products

Product | Affected Versions

H3C Magic NX15 | Up to V100R014
H3C Magic NX30 Pro | Up to V100R014
H3C Magic NX400 | Up to V100R014
H3C Magic R3010 | Up to V100R014

How the Exploit Works

The exploit takes advantage of insufficient sanitization in handling HTTP POST Requests to the /api/wizard/getCapability endpoint. This allows an attacker to inject arbitrary commands that the system subsequently executes, giving them the ability to manipulate the system or exfiltrate data.

Conceptual Example Code

A conceptual example of the vulnerability being exploited might look like the following, where the “malicious_payload” is the injected command:

POST /api/wizard/getCapability HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
{ "command": "; rm -rf /" }

In this example, the command “; rm -rf /” is injected, which, if executed, would delete all files in the system.

Recommended Mitigation

It is highly recommended to promptly apply the patch provided by the vendor. If immediate patching is not possible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as a temporary mitigation. These systems can help detect and block malicious HTTP requests that attempt to exploit this vulnerability.
Remember, the best defense against these types of vulnerabilities is to keep your systems updated and to follow best security practices.