Common Vulnerabilities and Exposures assigned an identifier CVE-2008-1384 to the following vulnerability: Integer overflow in PHP 5.2.5 and earlier allows context-dependent attackers to cause a denial of service and possibly have unspecified other impact via a printf format parameter with a large width specifier, related to the php_sprintf_appendstring function in formatted_print.c and probably other functions for formatted strings (aka *printf functions). References: http://securityreason.com/achievement_securityalert/52 http://www.securityfocus.com/archive/1/archive/1/489962/100/0/threaded http://cvs.php.net/viewvc.cgi/php-src/NEWS?revision=1.2027.2.547.2.1120&view=markup http://www.securityfocus.com/bid/28392
Red Hat does not consider this a security vulnerability. This can not be exploited into arbitrary code execution. Moreover, format strings are not likely to be under attacker's control.