PHP 'grapheme_extract()' NULL Pointer Dereference Denial Of Service Vulnerability

Summary
This host is running PHP and is prone to NULL pointer dereference denial of service vulnerability.
Impact
Successful exploitation could allows context-dependent attackers to cause a denial of service. Impact Level: Network
Solution
Apply the patch http://svn.php.net/viewvc?view=revision&revision=306449 ***** NOTE: Ignore this warning, if above mentioned patch is already applied. *****
Insight
A flaw is caused by a NULL pointer dereference in the 'grapheme_extract()' function in the Internationalization extension (Intl) for ICU which allows context-dependent attackers to cause a denial of service via an invalid size argument.
Affected
PHP version 5.3.5
References