The Masteriyo LMS plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.1.6. This is due to the plugin allowing a user to update the user role through the 'InstructorsController::prepare_object_for_database' function. This makes it possible for authenticated attackers, with Student-level access and above, to elevate their privileges to that of an administrator.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3490792/learning-management-system…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/265be0af-66a4-4636-ab…
security@wordfence.com