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CVE-2025-3543: Critical Command Injection Vulnerability in H3C Magic Series

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Overview

H3C Magic NX15, Magic NX30 Pro, Magic NX400, and Magic R3010 up to version V100R014 have been identified as having a critical vulnerability. This vulnerability, classified as CVE-2025-3543, is located within the HTTP POST Request Handler component, specifically affecting the FCGI_WizardProtoProcess function of the /api/wizard/setsyncpppoecfg file. The exploitation of this vulnerability could lead to command injection, potentially compromising the system or causing data leakage. Given its severity, IT professionals using these products are urged to take immediate action to prevent any potential exploits.

Vulnerability Summary

CVE ID: CVE-2025-3543
Severity: Critical, CVSS Score 8.0
Attack Vector: Local Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

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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 vulnerability is exploited via a specially crafted HTTP POST request to the affected component. The vulnerability arises due to insufficient sanitization of user-supplied data within the HTTP POST Request Handler component. An attacker within the local network can send a malicious POST request to the /api/wizard/setsyncpppoecfg file, leading to command injection.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request sent to the vulnerable endpoint:

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

In this example, the malicious payload includes a command to reboot the system and delete all files in the system root directory. The exact nature of the payload would depend on the attacker’s objectives.
Please note that this is a simplified and hypothetical example. Real attacks would likely be more complex and tailored to the specific system being targeted.

Mitigation

H3C has released a patch to address this vulnerability, and it is recommended to apply this patch immediately. If unable to apply the patch immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation. However, these measures are not a substitute for patching and updating the affected products to a secure version.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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