CVE-2011-4203

CRLF injection vulnerability in calendar/set.php in the Calendar component
in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, 2.1.x before 2.1.3, and
2.2 allows remote attackers to inject arbitrary HTTP headers and conduct
HTTP response splitting attacks via vectors involving the url variable.

Bugs

• <http://tracker.moodle.org/browse/MDL-24808&gt;