From b7d666e95aee11e441908278425d16deef87cefb Mon Sep 17 00:00:00 2001 From: Aaron Patterson Date: Fri, 4 Jan 2013 12:02:22 -0800 Subject: [PATCH 1/2] * Strip nils from collections on JSON and XML posts. [CVE-2013-0155] * dealing with empty hashes. Thanks Damien Mathieu --- actionpack/CHANGELOG.md | 4 ++++ actionpack/lib/action_dispatch/http/request.rb | 10 ++++------ .../lib/action_dispatch/middleware/params_parser.rb | 4 ++-- .../test/dispatch/request/json_params_parsing_test.rb | 15 +++++++++++++++ .../test/dispatch/request/xml_params_parsing_test.rb | 17 +++++++++++++++++ activerecord/CHANGELOG.md | 4 ++++ .../lib/active_record/relation/predicate_builder.rb | 7 ++++++- activerecord/test/cases/relation/where_test.rb | 16 +++++++++++++++- 8 files changed, 67 insertions(+), 10 deletions(-) diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md index 4d7035e..d07ef73 100644 --- a/actionpack/CHANGELOG.md +++ b/actionpack/CHANGELOG.md @@ -1,3 +1,7 @@ +## Rails 3.2.11 ## + +* Strip nils from collections on JSON and XML posts. [CVE-2013-0155] + ## Rails 3.2.10 ## ## Rails 3.2.9 (Nov 12, 2012) ## diff --git a/actionpack/lib/action_dispatch/http/request.rb b/actionpack/lib/action_dispatch/http/request.rb index afc0496..dea8e86 100644 --- a/actionpack/lib/action_dispatch/http/request.rb +++ b/actionpack/lib/action_dispatch/http/request.rb @@ -247,18 +247,14 @@ module ActionDispatch LOCALHOST.any? { |local_ip| local_ip === remote_addr && local_ip === remote_ip } end - protected - # Remove nils from the params hash def deep_munge(hash) - keys = hash.keys.find_all { |k| hash[k] == [nil] } - keys.each { |k| hash[k] = nil } - - hash.each_value do |v| + hash.each do |k, v| case v when Array v.grep(Hash) { |x| deep_munge(x) } v.compact! + hash[k] = nil if v.empty? when Hash deep_munge(v) end @@ -267,6 +263,8 @@ module ActionDispatch hash end + protected + def parse_query(qs) deep_munge(super) end diff --git a/actionpack/lib/action_dispatch/middleware/params_parser.rb b/actionpack/lib/action_dispatch/middleware/params_parser.rb index 6ded9db..ac72689 100644 --- a/actionpack/lib/action_dispatch/middleware/params_parser.rb +++ b/actionpack/lib/action_dispatch/middleware/params_parser.rb @@ -38,13 +38,13 @@ module ActionDispatch when Proc strategy.call(request.raw_post) when :xml_simple, :xml_node - data = Hash.from_xml(request.body.read) || {} + data = request.deep_munge(Hash.from_xml(request.body.read) || {}) request.body.rewind if request.body.respond_to?(:rewind) data.with_indifferent_access when :yaml YAML.load(request.raw_post) when :json - data = ActiveSupport::JSON.decode(request.body) + data = request.deep_munge ActiveSupport::JSON.decode(request.body) request.body.rewind if request.body.respond_to?(:rewind) data = {:_json => data} unless data.is_a?(Hash) data.with_indifferent_access diff --git a/actionpack/test/dispatch/request/json_params_parsing_test.rb b/actionpack/test/dispatch/request/json_params_parsing_test.rb index ad44b4b..fbf2ce1 100644 --- a/actionpack/test/dispatch/request/json_params_parsing_test.rb +++ b/actionpack/test/dispatch/request/json_params_parsing_test.rb @@ -30,6 +30,21 @@ class JsonParamsParsingTest < ActionDispatch::IntegrationTest ) end + test "nils are stripped from collections" do + assert_parses( + {"person" => nil}, + "{\"person\":[null]}", { 'CONTENT_TYPE' => 'application/json' } + ) + assert_parses( + {"person" => ['foo']}, + "{\"person\":[\"foo\",null]}", { 'CONTENT_TYPE' => 'application/json' } + ) + assert_parses( + {"person" => nil}, + "{\"person\":[null, null]}", { 'CONTENT_TYPE' => 'application/json' } + ) + end + test "logs error if parsing unsuccessful" do with_test_routing do output = StringIO.new diff --git a/actionpack/test/dispatch/request/xml_params_parsing_test.rb b/actionpack/test/dispatch/request/xml_params_parsing_test.rb index 0984f00..cadafa7 100644 --- a/actionpack/test/dispatch/request/xml_params_parsing_test.rb +++ b/actionpack/test/dispatch/request/xml_params_parsing_test.rb @@ -30,6 +30,23 @@ class XmlParamsParsingTest < ActionDispatch::IntegrationTest assert_equal "bar", resp.body end + def assert_parses(expected, xml) + with_test_routing do + post "/parse", xml, default_headers + assert_response :ok + assert_equal(expected, TestController.last_request_parameters) + end + end + + test "nils are stripped from collections" do + assert_parses( + {"hash" => { "person" => nil} }, + "") + assert_parses( + {"hash" => { "person" => ['foo']} }, + "foo\n") + end + test "parses hash params" do with_test_routing do xml = "David" diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index bd8a0bc..6be0c27 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,7 @@ +## Rails 3.2.11 ## + +* Fix querying with an empty hash *Damien Mathieu* [CVE-2013-0155] + ## Rails 3.2.10 ## * CVE-2012-5664 options hashes should only be extracted if there are extra diff --git a/activerecord/lib/active_record/relation/predicate_builder.rb b/activerecord/lib/active_record/relation/predicate_builder.rb index 6b118b4..b31fdfd 100644 --- a/activerecord/lib/active_record/relation/predicate_builder.rb +++ b/activerecord/lib/active_record/relation/predicate_builder.rb @@ -6,7 +6,12 @@ module ActiveRecord if allow_table_name && value.is_a?(Hash) table = Arel::Table.new(column, engine) - build_from_hash(engine, value, table, false) + + if value.empty? + '1 = 2' + else + build_from_hash(engine, value, table, false) + end else column = column.to_s diff --git a/activerecord/test/cases/relation/where_test.rb b/activerecord/test/cases/relation/where_test.rb index b9eef1d..8015833 100644 --- a/activerecord/test/cases/relation/where_test.rb +++ b/activerecord/test/cases/relation/where_test.rb @@ -1,9 +1,11 @@ require "cases/helper" require 'models/post' +require 'models/comment' +require 'models/edge' module ActiveRecord class WhereTest < ActiveRecord::TestCase - fixtures :posts + fixtures :posts, :edges def test_where_error assert_raises(ActiveRecord::StatementInvalid) do @@ -21,5 +23,17 @@ module ActiveRecord post = Post.first assert_equal post, Post.where(:posts => { 'id' => post.id }).first end + + def test_where_with_table_name_and_empty_hash + assert_equal 0, Post.where(:posts => {}).count + end + + def test_where_with_table_name_and_empty_array + assert_equal 0, Post.where(:id => []).count + end + + def test_where_with_empty_hash_and_no_foreign_key + assert_equal 0, Edge.where(:sink => {}).count + end end end -- 1.7.10.2 (Apple Git-33)