libraries/common.inc.php in phpMyAdmin 4.0.x before 4.0.10.7, 4.1.x before 4.1.14.8, and 4.2.x before 4.2.13.1 allows remote attackers to cause a denial of service (resource consumption) via a long password.
https://exchange.xforce.ibmcloud.com/vulnerabilities/99140
http://www.securityfocus.com/bid/71434
http://www.phpmyadmin.net/home_page/security/PMASA-2014-17.php
http://www.mandriva.com/security/advisories?name=MDVSA-2014:243