CVE-2024-43239

Masteriyo - LMS <= 1.11.4 - Authenticated (Student+) Insecure Direct Object Reference

2024-08-12 00:00
Ananda Dhakal

Strategic Overview

Status
Patched in 1.11.5
Affected Plugin
Masteriyo LMS – LMS Course Builder, Quizzes & Certificates
Affected Version
<= 1.11.4
CVSS
5.3Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2024-43239
View all Masteriyo LMS – LMS Course Builder, Quizzes & Certificates vulnerabilities

At a glance

CVE-2024-43239 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Masteriyo LMS WordPress plugin, affecting versions <= 1.11.4. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.11.5; sites on affected versions should update now. Disclosed August 2024, reported by Ananda Dhakal.

Vulnerability Overview

The Masteriyo LMS – eLearning and Online Course Builder for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.11.4 due to missing validation on the 'course_id' user controlled key. This makes it possible for authenticated attackers, with student-level access and above, to review courses they don't have access to.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-639: Authorization Bypass Through User-Controlled Key

Masteriyo LMS <= 1.11.4 carries this weakness at course_id, and reaching it takes an account at Student level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For Masteriyo LMS the fix is 1.11.5: builds <= 1.11.4 are affected, anything from 1.11.5 onward is not.

Remediation

Update to version 1.11.5, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Masteriyo LMS 1.11.5 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-43239https://www.wordfence.com/threat-intel/vulnerabilities/id/c3d7a587-042d-4ba1-9373-aaeb24c711f5https://nvd.nist.gov/vuln/detail/CVE-2024-43239

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C