This article is a part of our Vulnerability Database (back to index)
Cross-Site Request Forgery occurrences in Cmseasy
An issue was discovered in CmsEasy 6.1_20180508. There is a CSRF vulnerability in the rich text editor that can add an IFRAME element. This might be used in a DoS attack if a referenced remote URL is refreshed at a rapid rate. (2018-06-02, CVE-2018-11680)
An issue was discovered in CmsEasy 6.1_20180508. There is a CSRF vulnerability that can add an article via /index.php?case=table&act=add&table=archive&admin_dir=admin. (2018-06-02, CVE-2018-11679)
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.