Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-2jrm-gww7-wch2
Advisory ID github_osv/GHSA-2jrm-gww7-wch2
Aliases CVE-2021-20187
Summary Moodle Arbitrary PHP code execution by site admins via Shibboleth configuration 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.
Status Published
Exploitability 0.5
Weighted Severity 6.5
Risk 3.2
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-829 Inclusion of Functionality from Untrusted Control Sphere
System Score Found at
cvssv3.1 7.2 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-2jrm-gww7-wch2/GHSA-2jrm-gww7-wch2.json
generic_textual HIGH
Reference id Reference type URL
https://github.com/moodle/moodle
https://moodle.org/mod/forum/discuss.php?d=417171
CVE-2021-20187 https://nvd.nist.gov/vuln/detail/CVE-2021-20187
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-2jrm-gww7-wch2/GHSA-2jrm-gww7-wch2.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.