The dba_replace function in PHP 5.2.6 and 4.x allows context-dependent attackers to cause a denial of service (file truncation) via a key with the NULL byte. NOTE: this might only be a vulnerability in limited circumstances in which the attacker can modify or add database entries but does not have permissions to truncate the file.
cvs.php.net/viewvc.cgi/php-src/NEWS?r1=1.2027.2.547.2.1313&r2=1.2027.2.547.2.1314&
securityreason.com/achievement_securityalert/58
www.osvdb.org/52206
www.securityfocus.com/archive/1/498746/100/0/threaded
www.securityfocus.com/archive/1/498981/100/0/threaded
www.securityfocus.com/archive/1/498982/100/0/threaded
exchange.xforce.ibmcloud.com/vulnerabilities/47316