Multiple SQL injection vulnerabilities in CRM/Core/Page/AJAX/Location.php in CiviCRM before 4.2.12, 4.3.x before 4.3.7, and 4.4.x before 4.4.beta4 allow remote attackers to execute arbitrary SQL commands via the _value parameter to (1) ajax/jqState or (2) ajax/jqcounty.
https://github.com/civicrm/civicrm-core/pull/1708.diff
https://civicrm.org/advisory/civi-sa-2013-009-sql-injection-vulnerability