CVE-2011-4294

Name of the Vulnerable Software and Affected Versions Moodle versions 1.9.x through 1.9.12 Moodle versions 2.0.x through 2.0.3 Moodle versions 2.1.x through 2.1.0

Description The error-message functionality does not ensure that a continuation link refers to an http or https URL for the local Moodle instance. This might allow attackers to trick users into visiting arbitrary web sites via error message links that lead offsite.

Recommendations For Moodle versions 1.9.x through 1.9.12, update to version 1.9.13 or later. For Moodle versions 2.0.x through 2.0.3, update to version 2.0.4 or later. For Moodle versions 2.1.x through 2.1.0, update to version 2.1.1 or later.