This article is a part of our Vulnerability Database (back to index)
Cross-Site Request Forgery occurrences in Xyhcms
A cross site request forgery (CSRF) vulnerability in the /xyhai.php?s=/Auth/editUser URI of XYHCMS V3.6 allows attackers to edit any information of the administrator such as the name, e-mail, and password. (2021-07-08, CVE-2020-20586)
xyhai.php?s=/Auth/addUser in XYHCMS 3.5 allows CSRF to add a background administrator account. (2018-07-24, CVE-2018-14583)
An issue was discovered in XYHCMS 3.5. It has CSRF via an index.php?g=Manage&m=Rbac&a=addUser request, resulting in addition of an account with the administrator role. (2018-04-16, CVE-2018-10127)
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.