CVE-2023-25799

Tutor LMS <= 2.1.8 - Missing Authorization via multiple AJAX actions

2023-05-24 00:00

Strategic Overview

Status: Patched in 2.1.9
Affected Plugin: Tutor LMS – eLearning and online course solution
Affected Version: <= 2.1.8
CVSS: 5.4Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-25799

View all Tutor LMS – eLearning and online course solution vulnerabilities

At a glance

CVE-2023-25799 is a medium-severity Missing Authorization vulnerability in the Tutor LMS WordPress plugin, affecting versions <= 2.1.8. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 2.1.9; sites on affected versions should update now. Disclosed May 2023, reported by Rafie Muhammad.

Vulnerability Overview

The Tutor LMS plugin for WordPress is vulnerable to unauthorized access, modification, or loss of data due to a missing capability check on the multiple functions in versions up to, and including, 2.1.8. This makes it possible for authenticated attackers, with student-level access and above, to perform actions such as deleting arbitrary posts.

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.

CWE-862: Missing Authorization

Reaching this weakness in Tutor LMS <= 2.1.8 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Tutor LMS the fix is 2.1.9: builds <= 2.1.8 are affected, anything from 2.1.9 onward is not.

Remediation

Update to version 2.1.9, 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 2.1.9 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-25799 https://www.wordfence.com/threat-intel/vulnerabilities/id/bf16617d-cec2-4943-bd20-7ade31878714 https://nvd.nist.gov/vuln/detail/CVE-2023-25799

Related records

Same weakness class

CVSS Vector

5.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow

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