Vulnerability identifier: #VU54983
Vulnerability risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-79
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Moodle
Web applications /
Other software
Vendor: moodle.org
Description
The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data passed via the user ID number to quiz override screens. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Moodle: 3.11 - 3.11.0
External links
http://moodle.org/mod/forum/discuss.php?d=424805
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-71898
http://tracker.moodle.org/browse/MDL-71898
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.