{"id":"UBUNTU-CVE-2013-6386","details":"Drupal 6.x before 6.29 and 7.x before 7.24 uses the PHP mt_rand function to generate random numbers, which uses predictable seeds and allows remote attackers to predict security strings and bypass intended restrictions via a brute force attack.","modified":"2025-07-16T08:10:49.105278Z","published":"2013-12-07T21:55:00Z","withdrawn":"2025-07-18T16:42:56Z","upstream":["CVE-2013-6386"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-6386"},{"type":"REPORT","url":"https://drupal.org/SA-CORE-2013-003"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-6386"}],"affected":[{"package":{"name":"drupal7","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/drupal7@7.24-1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.24-1"}]}],"versions":["7.23-1"],"ecosystem_specific":{"binaries":[{"binary_name":"drupal7","binary_version":"7.24-1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-6386.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}