CVE-2023-35133

Summary

CVE-2023-35133 is a vulnerability affecting various versions of Moodle, including 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8, 3.11 to 3.11.14, and 3.9 to 3.9.21, and earlier unsupported versions. The issue lies in the logic used to check connections to the IP address 0.0.0.0 against the cURL blocked hosts lists, leading to an unintended Server Side Request Forgery (SSRF) risk. This vulnerability could potentially allow an attacker to make unauthorized requests to internal resources on the affected Moodle servers. It is essential for users to update their systems to the latest supported versions to mitigate this risk.

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