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.comThe 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.