Unauthenticated Arbitrary File Upload in Masteriyo LMS

Executive Summary

This vulnerability is an Unauthenticated Arbitrary File Upload in the Masteriyo - LMS WordPress plugin versions 2.3.2 and earlier. It allows attackers to upload malicious files without authentication, potentially leading to unauthorized access and further exploitation.

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Detection Guidance

Check if the Masteriyo - LMS plugin version is 2.3.2 or earlier. Look for unexpected file uploads in directories like /wp-content/uploads/ or /wp-content/plugins/masteriyo/. Monitor for unusual network traffic or unauthorized file executions.

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Impact Analysis

An attacker could upload backdoors or other malicious files to your website, gaining control over it. This could result in data theft, defacement, or use of your site for further attacks. The high CVSS score (9.8) indicates severe potential impact.

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Mitigation Strategies

Update the Masteriyo - LMS plugin to version 2.3.3 immediately. If updating is not possible, apply the mitigation rule provided by Patchstack to block attacks until the update is completed. Remove any suspicious files uploaded to the system.

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