Vulnerability Details : CVE-2021-20187
It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that it was possible for site administrators to execute arbitrary PHP scripts via a PHP include used during Shibboleth authentication.
Vulnerability category: File inclusion
Products affected by CVE-2021-20187
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:3.10.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20187
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 38 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20187
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
7.2
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
1.2
|
5.9
|
NIST |
CWE ids for CVE-2021-20187
-
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.Assigned by: secalert@redhat.com (Secondary)
-
The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-20187
-
https://moodle.org/mod/forum/discuss.php?d=417171
Moodle.org: MSA-21-0005: Arbitrary PHP code execution by site admins via Shibboleth configurationPatch;Vendor Advisory
Jump to