Description
MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content accepted a select_file_id parameter to serve SubmissionFile objects containing a record of files submitted by students. This parameter was not correctly scoped to the requesting user, allowing users access arbitrary submission file contents by id. This vulnerability is fixed in 2.9.1.
Problem types
CWE-639: Authorization Bypass Through User-Controlled Key
Product status
References
github.com/...Markus/security/advisories/GHSA-56gh-8hmq-7q88
github.com/...ommit/7daed9fd2d44932223798d997b55094a3bff104b
github.com/MarkUsProject/Markus/releases/tag/v2.9.1