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Vulnerability DatabaseCVE-2021-3943
CVE-2021-3943:
PHP vulnerability analysis and mitigation
Overview
A remote code execution vulnerability (CVE-2021-3943) was identified in Moodle versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10, and earlier unsupported versions. The vulnerability was discovered by Paul Holden and disclosed on November 15, 2021 (Moodle Forum).
Technical details
The vulnerability presents a remote code execution risk specifically when restoring backup files in Moodle. The severity is rated as 8.0 CVSS with a vector of (AV:N/AC:L/Au:N/C:P/I:P/A:P), indicating a serious security risk (Rapid7).
Impact
The vulnerability could allow attackers to execute arbitrary code remotely through malformed backup files, potentially compromising the integrity and security of affected Moodle installations (Moodle Forum).
Exploitability
The vulnerability requires the ability to restore backup files in Moodle. No specific details about exploitation in the wild have been publicly disclosed (CVE).
Mitigation and workarounds
The vulnerability has been fixed in Moodle versions 3.11.4, 3.10.8, and 3.9.11. Users are advised to upgrade to these patched versions to mitigate the risk (Moodle Forum).
Additional resources
Source: This report was generated using AI
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