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