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GHSA-382v-gxj9-ffhchigh7.5

Moodle uses predictable password-recovery tokens

Impact

lib/moodlelib.php in Moodle through 2.6.11, 2.7.x before 2.7.10, 2.8.x before 2.8.8, and 2.9.x before 2.9.2 relies on the PHP mt_rand function to implement the random_string and complex_random_string functions, which makes it easier for remote attackers to predict password-recovery tokens via a brute-force approach.

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 2.7.10Ecosystem versions2.7.10
From 2.8.0 before 2.8.8Ecosystem versions2.8.8
From 2.9.0 before 2.9.2Ecosystem versions2.9.2

Version evidence: OSV · GHSA-382v-gxj9-ffhc

View original version evidence (70 explicit versions)

Original source description

lib/moodlelib.php in Moodle through 2.6.11, 2.7.x before 2.7.10, 2.8.x before 2.8.8, and 2.9.x before 2.9.2 relies on the PHP mt_rand function to implement the random_string and complex_random_string functions, which makes it easier for remote attackers to predict password-recovery tokens via a brute-force approach.

References