Stack-based buffer overflow in the php_mysqlnd_auth_write function in the Mysqlnd extension in PHP 5.3 through 5.3.2 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long (1) username or (2) database name argument to the (a) mysql_connect or (b) mysqli_connect function.
http://svn.php.net/viewvc?view=revision&revision=298703
http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/NEWS?r1=298701&r2=298703&pathrev=298703
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html