CVE-2024-45691: Moodle Lesson activity password bypass through PHP loose comparison

November 20, 2024

A flaw was found in Moodle. When restricting access to a lesson activity with a password, certain passwords could be bypassed or less secure due to a loose comparison in the password-checking logic. This issue only affected passwords set to “magic hash” values.

References

bugzilla.redhat.com/show_bug.cgi?id=2309940
github.com/advisories/GHSA-xfv7-h2qg-rjm7
github.com/moodle/moodle
github.com/moodle/moodle/commit/3fc1073d304f660d2552b591c5fb92547ed01e92
moodle.org/mod/forum/discuss.php?d=461897
moodle.org/security
nvd.nist.gov/vuln/detail/CVE-2024-45691

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