WordPress wp-trackback.php Denial of Service Vulnerability

Summary
The host is running WordPress and is prone to Denial of Service vulnerability.
Impact
Successful exploitation will allow attacker to cause a Denial of Service due to high CPU consumption. Impact Level: System/Application
Solution
Upgrade to WordPress version 2.8.5 or later. http://wordpress.org/download/
Insight
An error occurs in wp-trackbacks.php due to improper validation of user supplied data passed into 'mb_convert_encoding()' function. This can be exploited by sending multiple-source character encodings into the fuction.
Affected
WordPress version prior to 2.8.5 on all platforms.
References