Vulnerability Details : CVE-2021-43558
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.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-43558
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43558
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43558
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2021-43558
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by:
- nvd@nist.gov (Primary)
- patrick@puiterwijk.org (Secondary)
References for CVE-2021-43558
-
https://moodle.org/mod/forum/discuss.php?d=429097
Moodle.org: MSA-21-0040: Reflected XSS in filetype admin toolPatch;Vendor Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=2021515
2021515 – (CVE-2021-43558, MSA-21-0040) CVE-2021-43558 moodle: reflected XSS in filetype admin toolIssue Tracking;Third Party Advisory
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