PHP 'mbstring.func_overload' DoS Vulnerability

Summary
The host is running PHP and is prone to denial of service vulnerability.
Impact
Successful exploitation will let the local attackers to crash an affected web server. Impact Level: Application
Solution
Apply patch from below link, http://php.net
Insight
This bug is due to an error in 'mbstring.func_overload' setting in .htaccess file. It can be exploited via modifying behavior of other sites hosted on the same web server which causes this setting to be applied to other virtual hosts on the same server.
Affected
PHP version 4.4.4 and prior PHP 5.1.x to 5.1.6 PHP 5.2.x to 5.2.5
References