The MasterStudy LMS plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.3.1. This is due to insufficient validation checks within the _register_user() function called by the wp_ajax_nopriv_stm_lms_register AJAX action. This makes it possible for unauthenticated attackers to register a user with administrator-level privileges when MasterStudy LMS Pro is installed and the LMS Forms Editor add-on is enabled.
Weakness
A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Masterstudy_lms | Stylemixthemes | * | 3.3.2 (excluding) |
Potential Mitigations
References
- https://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2
- https://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-system
- https://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cve
- https://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2
- https://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-system
- https://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cve