PHP 5.3.5 - 'grapheme_extract()' Null Pointer Dereference Denial of Service
source: https://www.securityfocus.com/bid/46429/info
PHP is prone to a denial-of-service vulnerability caused by a NULL-pointer dereference.
An attacker can exploit this issue to cause an appliation written in PHP to crash, denying service to legitimate users.
PHP 5.3.5 is vulnerable; other versions may also be affected.
The following proof-of-concept is available:
grapheme_extract('a',-1);