Font Awesome WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Font Awesome WordPress plugin, affecting versions prior to 4.3.2. The issue arises because the plugin fails to properly validate and escape certain shortcode attributes before rendering them on the page. This flaw enables users with a minimum role of contributor to execute stored cross-site scripting attacks against logged-in administrators.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Reproduction

To reproduce this vulnerability, use a shortcode that includes an unescaped attribute, such as 'title', with a value that contains JavaScript, like an 'onmouseover' event. When the shortcode is processed, the injected script will execute, demonstrating the cross-site scripting vulnerability.

Remediation

Users are advised to update the Font Awesome WordPress plugin to version 4.3.2 or later.