CVE-2021-36400 : In Moodle, insufficient capability checks made it possible to remove other users' calendar URL subscriptions.

In Moodle, insufficient capability checks made it possible to remove other users' calendar URL subscriptions.

Published 2023-03-06 22:15:10

Updated 2023-03-13 15:38:20

Source Fedora Project

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-36400

Probability of exploitation activity in the next 30 days: 0.06%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 25 % EPSS Score History EPSS FAQ

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: Low Availability: None

CWE-276 Incorrect Default Permissions

During installation, installed file permissions are set to allow anyone to modify those files.

Assigned by: patrick@puiterwijk.org (Secondary)
CWE-639 Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Assigned by: nvd@nist.gov (Primary)

https://moodle.org/mod/forum/discuss.php?d=424806

Moodle.org: MSA-21-0028: IDOR allows removal of other users' calendar URL subscriptions
Patch;Vendor Advisory

Moodle » Moodle
Versions from including (>=) 3.10.0 and before (<) 3.10.5
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Matching versions
Moodle » Moodle
Versions before (<) 3.9.8
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Matching versions
Moodle » Moodle
Versions from including (>=) 3.11.0 and before (<) 3.11.1
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Matching versions