{"id":"UBUNTU-CVE-2017-18264","details":"An issue was discovered in libraries/common.inc.php in phpMyAdmin 4.0 before 4.0.10.20, 4.4.x, 4.6.x, and 4.7.0 prereleases. The restrictions caused by $cfg['Servers'][$i]['AllowNoPassword'] = false are bypassed under certain PHP versions (e.g., version 5). This can allow the login of users who have no password set even if the administrator has set $cfg['Servers'][$i]['AllowNoPassword'] to false (which is also the default). This occurs because some implementations of the PHP substr function return false when given '' as the first argument.","modified":"2026-02-04T03:50:27.402243Z","published":"2018-05-01T17:29:00Z","related":["USN-4843-1"],"upstream":["CVE-2017-18264"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-18264"},{"type":"REPORT","url":"https://www.phpmyadmin.net/security/PMASA-2017-8/"},{"type":"REPORT","url":"https://github.com/phpmyadmin/phpmyadmin/commit/7232271a379396ca1d4b083af051262057003c41"},{"type":"REPORT","url":"https://github.com/phpmyadmin/phpmyadmin/commit/b6ca92cc75c8a16001425be7881e73430bcc35b8"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-18264"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4843-1"}],"affected":[{"package":{"name":"phpmyadmin","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/phpmyadmin@4:4.0.10-1ubuntu0.1+esm4?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4:4.0.10-1ubuntu0.1+esm4"}]}],"versions":["4:4.0.6-1","4:4.0.8-1","4:4.0.9-1","4:4.0.10-1","4:4.0.10-1ubuntu0.1","4:4.0.10-1ubuntu0.1+esm1","4:4.0.10-1ubuntu0.1+esm2","4:4.0.10-1ubuntu0.1+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"phpmyadmin","binary_version":"4:4.0.10-1ubuntu0.1+esm4"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-18264.json"}},{"package":{"name":"phpmyadmin","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/phpmyadmin@4:4.5.4.1-2ubuntu2.1+esm3?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4:4.5.4.1-2ubuntu2.1+esm3"}]}],"versions":["4:4.4.13.1-1","4:4.5.0.2-2","4:4.5.1-1","4:4.5.1-2","4:4.5.1-3","4:4.5.2-1","4:4.5.2-2","4:4.5.3.1-1","4:4.5.4-1","4:4.5.4.1-2","4:4.5.4.1-2ubuntu1","4:4.5.4.1-2ubuntu2","4:4.5.4.1-2ubuntu2.1","4:4.5.4.1-2ubuntu2.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"phpmyadmin","binary_version":"4:4.5.4.1-2ubuntu2.1+esm3"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-18264.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}