MasterStudy LMS <= 3.3.1 - Unauthenticated Privilege Escalation via stm_lms_register AJAX Action

2024-03-28 00:00

Hiroho Shimada

Strategic Overview

Status

Patched in 3.3.2

Affected PluginMasterStudy LMS WordPress Plugin – for Online Courses and Education

Affected Version<= 3.3.1

CVSS9.8Critical

CVECVE-2024-2409

View all MasterStudy LMS WordPress Plugin – for Online Courses and Education vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 3.3.2, or a newer patched version --- IDENTIFIER: CWE-266 (Incorrect Privilege Assignment) A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

External References

https://www.cve.org/CVERecord?id=CVE-2024-2409 https://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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