CVE-2024-4279

Tutor LMS – eLearning and online course solution <= 2.7.0 - Authenticated (Instructor+) Insecure Direct Object Reference to Arbitrary Course Deletion

2024-05-15 00:00
Thanh Nam Tran

Strategic Overview

Status
Patched in 2.7.1
Affected Plugin
Tutor LMS – eLearning and online course solution
Affected Version
<= 2.7.0
CVSS
6.5Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2024-4279
View all Tutor LMS – eLearning and online course solution vulnerabilities

At a glance

CVE-2024-4279 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Tutor LMS WordPress plugin, affecting versions <= 2.7.0. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high availability impact). Exploitation requires an authenticated account at Instructor level or above. The issue is fixed in version 2.7.1; sites on affected versions should update now. Disclosed May 2024, reported by Thanh Nam Tran.

Vulnerability Overview

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference to Arbitrary Course Deletion in versions up to, and including, 2.7.0 via the 'tutor_course_delete' function due to missing validation on a user controlled key. This can allow authenticated attackers, with Instructor-level permissions and above, to delete any course.

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 interaction from a victim user. A successful exploit has high impact on availability.

CWE-639: Authorization Bypass Through User-Controlled Key

Tutor LMS <= 2.7.0 carries this weakness at tutor_course_delete, and reaching it takes an account at Instructor 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 Tutor LMS the fix is 2.7.1: builds <= 2.7.0 are affected, anything from 2.7.1 onward is not.

Remediation

Update to version 2.7.1, 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: Tutor LMS 2.7.1 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-4279https://www.wordfence.com/threat-intel/vulnerabilities/id/45d04643-e43a-4732-91bf-e4af7b622e33https://nvd.nist.gov/vuln/detail/CVE-2024-4279

Related records

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