CVE-2022-37059

Vulnerability

Overview

CVE-2022-37059 describes a Cross-Site Scripting (XSS) vulnerability in the admin panel of Subrion CMS version 4.2.1. The flaw resides in the login field, where user-supplied input is not properly sanitized before being processed. This allows an attacker to inject arbitrary HTML and JavaScript code into the application [1].

Exploitation

An unauthenticated attacker can exploit this vulnerability by submitting a crafted payload in the login field of the admin panel. The injected script is then executed in the context of the admin panel, potentially when an administrator views the login page or related logs. No special privileges or network position beyond access to the login page are required [1].

Impact

Successful exploitation enables the attacker to execute arbitrary JavaScript in the browser of any administrator who accesses the affected page. This can lead to session hijacking, defacement of the admin interface, theft of sensitive data, or further compromise of the CMS instance [1].

Mitigation

As of the publication date, no official patch has been released for Subrion CMS 4.2.1. Users are advised to restrict access to the admin panel to trusted IPs, implement web application firewall rules to filter XSS payloads, and monitor the project's repository [2] for updates. Upgrading to a newer version or applying manual input sanitization may also mitigate the risk.