Exploits / Vulnerability Discovered : 2021-05-28 |
Type : webapps |
Platform : php
This exploit / vulnerability Wordpress plugin lifterlms 4.21.0 stored crosssite scripting (xss) is for educational purposes only and if it is used you will do on your own risk!
The 'State' field of the Edit profile page of the LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress plugin before 4.21.1 is not properly sanitised when output in the About section of the profile page, leading to a stored Cross-Site Scripting issue. This could allow low privilege users (such as students) to elevate their privilege via an XSS attack when an admin will view their profile.
#Proof_of_Concept:
1- As a Lowest Privilege user go to the edit account page of the LMS
(e.g https://example.com/my-courses/edit-account/)
2- Put Your XSS payload in State parameter and save your edits, such
as "><script>alert(/XSS/)</script>
3- The XSS will be stored and triggered in the about section of the profile: (e.g https://example.com/directory/[user_name]/) (Note): The XSS will also be triggered in the admin dashboard when viewing the user details, for example https://example.com/wp-admin/admin.php?page=llms-reporting&tab=students&stab=information&student_id=2