CVE-2025-3542: Critical Command Injection Vulnerability in H3C Magic Series

Overview

Recently, a critical vulnerability, designated as CVE-2025-3542, has been discovered in multiple H3C Magic devices. This vulnerability impacts the Magic NX15, Magic NX400, and Magic R3010 up to version V100R014. It is particularly concerning because the exploit can lead to command injection, which can potentially compromise the system or result in data leakage. Given that H3C Magic devices are widely used, this vulnerability has far-reaching implications and could potentially impact a vast number of networks.

Vulnerability Summary

CVE ID: CVE-2025-3542
Severity: Critical, CVSS Score: 8.0
Attack Vector: Local network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

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

How the Exploit Works

This vulnerability arises due to improper sanitization of user input in the HTTP POST Request Handler’s FCGI_WizardProtoProcess function. An attacker with access to the local network can exploit this weakness by sending a crafted HTTP POST request to the /api/wizard/getsyncpppoecfg endpoint, which can lead to command injection. This command injection can allow the attacker to execute arbitrary commands on the device, potentially leading to system compromise and data leakage.

Conceptual Example Code

Below is a conceptual example demonstrating how the vulnerability might be exploited:

POST /api/wizard/getsyncpppoecfg HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "command": "; rm -rf /" }

In this hypothetical example, the attacker is injecting a command (`; rm -rf /`) that, if executed, would delete all files on the device’s filesystem. This is only a conceptual example and the actual malicious payload would likely be far more sophisticated.

Mitigation Guidance

To protect against this vulnerability, it is recommended to apply the vendor-provided patch as soon as possible. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. However, these should not be considered a permanent solution, as they may not fully prevent the exploitation of this vulnerability.