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Moodle 3.1.x < 3.1.2 Authentication Bypass

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Synopsis

The remote web server is hosting a web application that is vulnerable to an authentication bypass attack vector.

Description

The remote web server hosts Moodle, an open-source course management system. Versions of Moodle 3.1.x prior to 3.1.2 are affected by a flaw that is due to the program failing to invalidate user tokens after a password change is performed. This may allow an attacker who had compromised a user's account to have their access persist after the password has been changed.

Solution

Upgrade to Moodle version 3.1.2 or later.