CVE-2022-0441

MasterStudy LMS < 2.7.6 - Unauthenticated Admin Account Creation

2022-02-01 00:00

Strategic Overview

Status: Patched in 2.7.6
Affected Plugin: MasterStudy LMS WordPress Plugin – for Online Courses and Education
Affected Version: <= 2.7.5
CVSS: 9.8Critical
Weakness type: CWE-269 · Improper Privilege Management
CVE: CVE-2022-0441

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

At a glance

CVE-2022-0441 is a critical-severity Improper Privilege Management vulnerability in the MasterStudy LMS WordPress Plugin WordPress plugin, affecting versions <= 2.7.5. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 2.7.6; sites on affected versions should update now. Disclosed February 2022, reported by Numan Türle.

Vulnerability Overview

The MasterStudy LMS WordPress plugin before 2.7.6 does to validate some parameters given when registering a new account, allowing unauthenticated users to register as an admin

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. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-269: Improper Privilege Management

Reaching this weakness in MasterStudy LMS WordPress Plugin <= 2.7.5 takes no account at all. Improper privilege management means the code lets an account end up with capabilities its role should not have.

It converts a low-privileged account into an administrative one, which makes every other restriction on the site irrelevant. For MasterStudy LMS WordPress Plugin the fix is 2.7.6: builds <= 2.7.5 are affected, anything from 2.7.6 onward is not.

Remediation

Update to version 2.7.6, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: MasterStudy LMS WordPress Plugin 2.7.6 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0441 https://www.wordfence.com/threat-intel/vulnerabilities/id/18fd631d-9e9b-46ee-953f-61ad3458e1dd https://nvd.nist.gov/vuln/detail/CVE-2022-0441

Related records

Same weakness class

Other vulnerabilities in MasterStudy LMS WordPress Plugin – for Online Courses and Education

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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