added aux module open_x11.rb provided by tebo.

git-svn-id: file:///home/svn/framework3/trunk@5758 4d416f70-5f16-0410-b530-b9f4589650da

modules/auxiliary/scanner/x11/open_x11.rb

@@ -0,0 +1,86 @@
+##
+# $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'
+
+
+class Metasploit3 < Msf::Auxiliary
+
+	include Msf::Exploit::Remote::Tcp
+	include Msf::Auxiliary::Scanner
+
+	def initialize
+		super(
+			'Name'		=> 'X11 No-Auth Scanner',
+			'Version'	=> '1',
+			'Description'	=> %q{
+				This module scans for X11 servers that allow anyone
+				to connect without authentication.
+			},
+			'Author'	=>
+				['tebo <tebodell[at]gmail.com>'],
+			'References'	=>
+				[
+					['OSVDB', '309'],
+					['CVE', '1999-0526'],
+				],
+			'License'	=> MSF_LICENSE
+		)
+
+		register_options(
+			[
+				Opt::RPORT(6000)
+			],
+			self.class
+		)
+
+	end
+
+	def run_host(ip)
+
+		begin
+
+			print_status("Trying #{ip}")
+
+			connect
+
+			# X11.00 Null Auth Connect
+			buf =   "\x6c\x00\x0b\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+
+			sock.put(buf)
+			response = sock.get_once
+			
+			if response
+				success = response[0]
+			end
+
+			if success == 1
+				vendor_len = response[24..25].unpack('s')[0]
+				vendor = response[40..(40+vendor_len)].unpack('A*')
+				
+				print_status("Open X Server @ #{ip} (#{vendor})")
+			elsif success == 0
+				print_status("Access Denied on #{ip}")
+			else
+				# X can return a reason for auth failure but we don't really care for this
+			end
+
+		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable
+		rescue ::Rex::ConnectionTimeout, ::Timeout::Error, ::Errno::EPIPE
+
+
+		end
+
+	end
+
+end
+
+