MSA-17-0017: XSS in contact form on non-respondents page in non-anonymous feedback

by Marina Glancy.  

Form on the feedback "non-respondents" page does not escape the value of subject thus creating self-XSS. This can be used to attack another user by tricking them into opening malicious URL whilst in an open Moodle session


Severity/Risk:Minor
Versions affected:3.3 to 3.3.1, 3.2 to 3.2.4, 3.1 to 3.1.7 and earlier unsupported versions
Versions fixed:3.3.2, 3.2.5 and 3.1.8
Reported by:JPCERT/CC
CVE identifier:CVE-2017-12156
Changes (master):http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-59972
Tracker issue:MDL-59972 XSS in contact form on "non-respondents" page (mod_feedback)

Read more https://moodle.org/mod/forum/discuss.php?d=358585&parent=1446233