PHP 'unserialize()' Function Denial of Service Vulnerability

Summary
The host is running PHP and is prone to Denial of Service vulnerability.
Impact
Successful exploitation could allow attackers to execute arbitrary PHP code and cause denial of service. Impact Level: Application
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
An error in 'unserialize()' function while processing malformed user supplied data containing a long serialized string passed via the '__wakeup()' or '__destruct()' methods.
Affected
PHP 5.3.0 and prior on all running platform.
References