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Vulnerability DatabaseCVE-2021-43558

CVE-2021-43558: 
PHP vulnerability analysis and mitigation

Overview

A reflected XSS vulnerability (CVE-2021-43558) was discovered 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 identified in the filetype site administrator tool where a URL parameter required additional sanitization (Moodle Forum).

Technical details

The vulnerability is classified as a reflected Cross-Site Scripting (XSS) issue with a CWE-79 classification (NVD Report). The security flaw was found in the filetype site administrator tool where insufficient sanitization of a URL parameter could lead to XSS attacks (Moodle Forum).

Impact

The vulnerability was rated as 'Serious' by Moodle security team and could potentially allow attackers to execute malicious scripts through the affected URL parameter in the filetype administrator tool (Moodle Forum).

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 security risk (Moodle Forum).

Additional resources

Source: This report was generated using AI

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