Cross-site scripting in Moodle - CVE-2015-3275

Detailed vulnerability description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in the SCORM module in Moodle through 2.6.11, 2.7.x before 2.7.9, 2.8.x before 2.8.7, and 2.9.x before 2.9.1 when processing a crafted organization name to (1) mod/scorm/player.php or (2) mod/scorm/prereqs.php. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

How to mitigate CVE-2015-3275

Sources

• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-50614
• http://openwall.com/lists/oss-security/2015/07/13/2
• http://www.securitytracker.com/id/1032877
• https://moodle.org/mod/forum/discuss.php?d=316665