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CVE-2025-31965: HCL BigFix Remote Control Server WebUI Unauthorized Information Access Vulnerability

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Overview

The cybersecurity landscape is continually evolving, and threats can arise from unexpected corners. One such issue is the recent discovery of a vulnerability, CVE-2025-31965, in the web interface of HCL BigFix Remote Control Server. This vulnerability impacts versions 10.1.0.0248 and lower and allows non-admin users to view unauthorized information on certain web pages. Its severity is significant, with a CVSS score of 8.2, and it poses a potential risk for system compromise or data leakage. Therefore, understanding and mitigating this vulnerability is crucial for all users of HCL BigFix Remote Control Server.

Vulnerability Summary

CVE ID: CVE-2025-31965
Severity: High (CVSS: 8.2)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Unauthorized information access leading to potential system compromise or data leakage

Affected Products

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Product | Affected Versions

HCL BigFix Remote Control Server WebUI | 10.1.0.0248 and lower

How the Exploit Works

The vulnerability exists due to improper access restrictions implemented by the HCL BigFix Remote Control Server WebUI. In versions 10.1.0.0248 and lower, non-admin users can access and view unauthorized information on certain web pages. The information leakage may provide malicious actors with critical data that can be used to compromise the system further or exploit other vulnerabilities.

Conceptual Example Code

A conceptual example of how this vulnerability might be exploited is a non-admin user sending a GET request to a restricted web page. The server, due to the improper access restrictions, responds with confidential data. The request might look like this:

GET /restricted/page HTTP/1.1
Host: target.example.com

The server then responds with data that should only be accessible to admin users.

Mitigation Guidance

Users of HCL BigFix Remote Control Server WebUI should apply the vendor patch as soon as possible to mitigate this vulnerability. If immediate patching is not feasible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by detecting and blocking attempts to exploit this vulnerability. However, these measures should only be seen as a stopgap, and the official vendor patch should still be applied when available.

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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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