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GHSA-j5jv-w5cw-j9ffhigh8.1

Moodle authentication bypass vulnerability

Impact

A flaw was found in Moodle. This authentication bypass vulnerability allows suspended users to authenticate through the Learning Tools Interoperability (LTI) Provider. The issue arises from the LTI authentication handlers failing to enforce the user's suspension status, enabling unauthorized access to the system. This can lead to information disclosure or other unauthorized actions by users who should be restricted.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

moodle/moodle Packagist
Affected rangeRecorded fix
Earlier releases before 4.1.22Ecosystem versions4.1.22
From 4.4.0-beta before 4.4.12Ecosystem versions4.4.12
From 4.5.0-beta before 4.5.8Ecosystem versions4.5.8
From 5.0.0-beta before 5.0.4Ecosystem versions5.0.4
From 5.1.0-beta before 5.1.1Ecosystem versions5.1.1

Version evidence: OSV · GHSA-j5jv-w5cw-j9ff

View original version evidence (392 explicit versions)

Original source description

A flaw was found in Moodle. This authentication bypass vulnerability allows suspended users to authenticate through the Learning Tools Interoperability (LTI) Provider. The issue arises from the LTI authentication handlers failing to enforce the user's suspension status, enabling unauthorized access to the system. This can lead to information disclosure or other unauthorized actions by users who should be restricted.

References