Vulnerability CVE-2021-43558
Published: 2021-11-22

Description:
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. A URL parameter in the filetype site administrator tool required extra sanitizing to prevent a reflected XSS risk.

Type:

CWE-79

 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Moodle -> Moodle 
Fedoraproject -> Fedora extra packages for enterprise linux 
Fedoraproject -> Fedora 

 References:
https://moodle.org/mod/forum/discuss.php?d=429097
https://bugzilla.redhat.com/show_bug.cgi?id=2021515
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