Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2021-36397
CVE-2021-36397:
PHP vulnerability analysis and mitigation
Overview
In Moodle, a vulnerability (CVE-2021-36397) was discovered where insufficient capability checks allowed message deletions beyond the current user's scope. The vulnerability affects Moodle versions 3.10.x before 3.10.5, 3.11.x before 3.11.1, and 3.9.x before 3.9.8. This security issue was reported by 0xkasper and was publicly disclosed in July 2021 (Moodle Advisory).
Technical details
The vulnerability has been assigned a CVSS v3.1 base score of 5.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N. The core issue stems from insufficient capability checks in the messaging web service that failed to properly restrict message deletion operations to the current user (NVD).
Impact
The vulnerability allows unauthorized users to delete messages belonging to other users, potentially leading to loss of communication history and data integrity issues (CERT-FR).
Mitigation and workarounds
The vulnerability has been fixed in Moodle versions 3.11.1, 3.10.5, and 3.9.8. Users are advised to upgrade to these or later versions to address the security issue (Moodle Advisory).
Additional resources
Source: This report was generated using AI
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