Added rails_mass_assignment module.

modules/auxiliary/scanner/http/rails_mass_assignment.rb

@@ -0,0 +1,110 @@
+##
+# 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 'rex/proto/http'
+require 'msf/core'
+require 'uri'
+
+class Metasploit3 < Msf::Auxiliary
+
+	include Msf::Exploit::Remote::HttpClient
+	include Msf::Auxiliary::WmapScanUniqueQuery
+	include Msf::Auxiliary::Scanner
+	include Msf::Auxiliary::Report
+
+	def initialize(info = {})
+		super(update_info(info,
+			'Name'			=> 'Ruby On Rails Attributes Mass Assignment scaner',
+			'Description'	=> %q{
+				This module scans Ruby On Rails sites for
+				models with attributes not protected by attr_protected or attr_accessible.
+				After attempt to assing nonexistent field in model
+				default rails + active_record setup will raise ActiveRecord::UnknownAttributeError
+				exeption and answer with HTTP code 500.
+			},
+
+			'References'     =>
+				[
+					[ 'URL', 'http://guides.rubyonrails.org/security.html#mass-assignment' ]
+				],
+			'Author'       => [ 'Gregory Man <man.gregory[at]gmail.com>' ],
+			'License'      => MSF_LICENSE
+		))
+
+		register_options(
+			[
+				OptEnum.new('METHOD', [true, 'HTTP Method', 'POST', ['GET', 'POST'] ]),
+				OptString.new('PATH', [ true, "The path to test mass assignment", '/users/1']),
+				OptString.new('QUERY', [ false, "HTTP URI Query", nil]),
+				OptString.new('DATA', [ false, "HTTP Body Data", '']),
+				OptString.new('COOKIE',[ false, "HTTP Cookies", ''])
+			], self.class)
+	end
+
+	def run_host(ip)
+		case datastore['METHOD']
+		when 'POST'
+			parsed_data = queryparse(URI.unescape(datastore['DATA']))
+		when 'GET'
+			parsed_data = queryparse(URI.unescape(datastore['QUERY']))
+		end
+		data_base_params = get_base_params(parsed_data)
+
+		if data_base_params.blank?
+			vprint_error('Non-standart rails params schema (maybe not a RoR website)')
+			return
+		end
+
+		check_data(parsed_data, data_base_params)
+	end
+
+	def get_base_params(parsed_query_string)
+		base_params_names = []
+		parsed_query_string.each do |key, val|
+			key.gsub(/(.*)\[(\w*)\]$/) do
+				base_params_names << $1
+			end
+		end
+		return base_params_names.uniq
+	end
+
+	def check_data(parsed_data, base_params)
+		base_params.each do |param|
+			query = parsed_data.dup
+			test_param = { param + "[#{Rex::Text.rand_text_alpha(10)}]" => Rex::Text.rand_text_alpha(10) }
+			query.merge!(test_param)
+
+			resp = send_request_cgi({
+				'uri'		=> datastore['PATH'],
+				'vars_get'	=> datastore['METHOD'] == 'POST' ? queryparse(datastore['QUERY'].to_s) : query,
+				'method'	=> datastore['METHOD'],
+				'ctype'		=> 'application/x-www-form-urlencoded',
+				'cookie'	=> datastore['COOKIE'],
+				'data'		=> datastore['METHOD'] == 'POST' ? query.to_query : datastore['DATA']
+			}, 20)
+
+			if resp.code == 500
+				print_good("Possible attributes mass assignment in attribute #{param}[...] at #{datastore['PATH']}")
+				report_web_vuln(
+					:host	=> rhost,
+					:port	=> rport,
+					:vhost  => vhost,
+					:ssl    => ssl,
+					:path	=> "#{datastore['PATH']}",
+					:method => datastore['METHOD'],
+					:pname  => param,
+					:proof  => "rails mass assignment",
+					:risk   => 2,
+					:confidence   => 80,
+					:category     => 'Rails',
+					:description  => "Possible attributes mass assignment in attribute #{param}[...]",
+					:name   => 'Ruby On Rails Attributes Mass Assignment'
+				)
+			end
+		end
+	end
+end