This article is a part of our Vulnerability Database (back to index)
Cross-Site Request Forgery occurrences in Glfusion
glFusion CMS 1.7.9 is affected by a Cross Site Request Forgery (CSRF) vulnerability in /public_html/admin/plugins/bad_behavior2/blacklist.php. Using the CSRF vulnerability to trick the administrator to click, an attacker can add a blacklist. (2021-12-14, CVE-2021-44942)
Why Cross-Site Request Forgery can be dangerous
The absence of Anti-CSRF tokens may lead to a Cross-Site Request Forgery attack that can result in executing a specific application action as another logged in user, e.g. steal their account by changing their email and password or silently adding a new admin user account when executed from the administrator account.
The attacker may copy one of your web application forms, e.g. email/password change form.
The webpage will contain a form with the exact set of fields as the original application but with input values already provided and the submit button replaced with a Javascript code causing auto-submission. When the page is accessed the form will be immediately submitted and page contents replaced with a valid content or a redirect to your original application.
One of your application users who is already logged in can be then tricked to navigate to such malicious page e.g. by clicking a link in a phishing email, and the pre-populated form content will be submitted to your application like it would be submitted by your user.