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Fix rate limiting for paths with formats (#20675)

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Eugen Rochko 2022-11-14 20:26:31 +01:00 committed by GitHub
parent 71c92d3f56
commit 21fd25a269
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5 changed files with 117 additions and 24 deletions
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3
Gemfile
View file

@ -122,6 +122,7 @@ group :test do
gem 'simplecov', '~> 0.21', require: false
gem 'webmock', '~> 3.18'
gem 'rspec_junit_formatter', '~> 0.6'
gem 'rack-test', '~> 2.0'
end
group :development do
@ -152,7 +153,5 @@ end
gem 'concurrent-ruby', require: false
gem 'connection_pool', require: false
gem 'xorcist', '~> 1.1'
gem 'cocoon', '~> 1.2'

1
Gemfile.lock
View file

@ -815,6 +815,7 @@ DEPENDENCIES
rack (~> 2.2.4)
rack-attack (~> 6.6)
rack-cors (~> 1.1)
rack-test (~> 2.0)
rails (~> 6.1.7)
rails-controller-testing (~> 1.0)
rails-i18n (~> 6.0)

49
config/initializers/rack_attack.rb
View file

@ -17,6 +17,18 @@ class Rack::Attack
@remote_ip ||= (@env["action_dispatch.remote_ip"] || ip).to_s
end
def throttleable_remote_ip
@throttleable_remote_ip ||= begin
ip = IPAddr.new(remote_ip)
if ip.ipv6?
ip.mask(64)
else
ip
end
end.to_s
end
def authenticated_user_id
authenticated_token&.resource_owner_id
end
@ -29,6 +41,10 @@ class Rack::Attack
path.start_with?('/api')
end
def path_matches?(other_path)
/\A#{Regexp.escape(other_path)}(\..*)?\z/ =~ path
end
def web_request?
!api_request?
end
@ -51,19 +67,19 @@ class Rack::Attack
end
throttle('throttle_unauthenticated_api', limit: 300, period: 5.minutes) do |req|
req.remote_ip if req.api_request? && req.unauthenticated?
req.throttleable_remote_ip if req.api_request? && req.unauthenticated?
end
throttle('throttle_api_media', limit: 30, period: 30.minutes) do |req|
req.authenticated_user_id if req.post? && req.path.match?('^/api/v\d+/media')
req.authenticated_user_id if req.post? && req.path.match?(/\A\/api\/v\d+\/media\z/i)
end
throttle('throttle_media_proxy', limit: 30, period: 10.minutes) do |req|
req.remote_ip if req.path.start_with?('/media_proxy')
req.throttleable_remote_ip if req.path.start_with?('/media_proxy')
end
throttle('throttle_api_sign_up', limit: 5, period: 30.minutes) do |req|
req.remote_ip if req.post? && req.path == '/api/v1/accounts'
req.throttleable_remote_ip if req.post? && req.path == '/api/v1/accounts'
end
throttle('throttle_authenticated_paging', limit: 300, period: 15.minutes) do |req|
@ -71,39 +87,34 @@ class Rack::Attack
end
throttle('throttle_unauthenticated_paging', limit: 300, period: 15.minutes) do |req|
req.remote_ip if req.paging_request? && req.unauthenticated?
req.throttleable_remote_ip if req.paging_request? && req.unauthenticated?
end
API_DELETE_REBLOG_REGEX = /\A\/api\/v1\/statuses\/[\d]+\/unreblog/.freeze
API_DELETE_STATUS_REGEX = /\A\/api\/v1\/statuses\/[\d]+/.freeze
API_DELETE_REBLOG_REGEX = /\A\/api\/v1\/statuses\/[\d]+\/unreblog\z/.freeze
API_DELETE_STATUS_REGEX = /\A\/api\/v1\/statuses\/[\d]+\z/.freeze
throttle('throttle_api_delete', limit: 30, period: 30.minutes) do |req|
req.authenticated_user_id if (req.post? && req.path.match?(API_DELETE_REBLOG_REGEX)) || (req.delete? && req.path.match?(API_DELETE_STATUS_REGEX))
end
throttle('throttle_sign_up_attempts/ip', limit: 25, period: 5.minutes) do |req|
if req.post? && req.path == '/auth'
addr = req.remote_ip
addr = IPAddr.new(addr) if addr.is_a?(String)
addr = addr.mask(64) if addr.ipv6?
addr.to_s
end
req.throttleable_remote_ip if req.post? && req.path_matches?('/auth')
end
throttle('throttle_password_resets/ip', limit: 25, period: 5.minutes) do |req|
req.remote_ip if req.post? && req.path == '/auth/password'
req.throttleable_remote_ip if req.post? && req.path_matches?('/auth/password')
end
throttle('throttle_password_resets/email', limit: 5, period: 30.minutes) do |req|
req.params.dig('user', 'email').presence if req.post? && req.path == '/auth/password'
req.params.dig('user', 'email').presence if req.post? && req.path_matches?('/auth/password')
end
throttle('throttle_email_confirmations/ip', limit: 25, period: 5.minutes) do |req|
req.remote_ip if req.post? && %w(/auth/confirmation /api/v1/emails/confirmations).include?(req.path)
req.throttleable_remote_ip if req.post? && (req.path_matches?('/auth/confirmation') || req.path == '/api/v1/emails/confirmations')
end
throttle('throttle_email_confirmations/email', limit: 5, period: 30.minutes) do |req|
if req.post? && req.path == '/auth/password'
if req.post? && req.path_matches?('/auth/password')
req.params.dig('user', 'email').presence
elsif req.post? && req.path == '/api/v1/emails/confirmations'
req.authenticated_user_id
@ -111,11 +122,11 @@ class Rack::Attack
end
throttle('throttle_login_attempts/ip', limit: 25, period: 5.minutes) do |req|
req.remote_ip if req.post? && req.path == '/auth/sign_in'
req.throttleable_remote_ip if req.post? && req.path_matches?('/auth/sign_in')
end
throttle('throttle_login_attempts/email', limit: 25, period: 1.hour) do |req|
req.session[:attempt_user_id] || req.params.dig('user', 'email').presence if req.post? && req.path == '/auth/sign_in'
req.session[:attempt_user_id] || req.params.dig('user', 'email').presence if req.post? && req.path_matches?('/auth/sign_in')
end
self.throttled_responder = lambda do |request|

6
config/routes.rb
View file

@ -73,7 +73,7 @@ Rails.application.routes.draw do
end
end
devise_for :users, path: 'auth', controllers: {
devise_for :users, path: 'auth', format: false, controllers: {
omniauth_callbacks: 'auth/omniauth_callbacks',
sessions: 'auth/sessions',
registrations: 'auth/registrations',
@ -216,7 +216,7 @@ Rails.application.routes.draw do
resource :relationships, only: [:show, :update]
resource :statuses_cleanup, controller: :statuses_cleanup, only: [:show, :update]
get '/media_proxy/:id/(*any)', to: 'media_proxy#show', as: :media_proxy
get '/media_proxy/:id/(*any)', to: 'media_proxy#show', as: :media_proxy, format: false
resource :authorize_interaction, only: [:show, :create]
resource :share, only: [:show, :create]
@ -404,7 +404,7 @@ Rails.application.routes.draw do
get '/admin', to: redirect('/admin/dashboard', status: 302)
namespace :api do
namespace :api, format: false do
# OEmbed
get '/oembed', to: 'oembed#show', as: :oembed

82
spec/config/initializers/rack_attack_spec.rb Normal file
View file

@ -0,0 +1,82 @@
require 'rails_helper'
describe Rack::Attack do
include Rack::Test::Methods
def app
Rails.application
end
shared_examples 'throttled endpoint' do
context 'when the number of requests is lower than the limit' do
it 'does not change the request status' do
limit.times do
request.call
expect(last_response.status).to_not eq(429)
end
end
end
context 'when the number of requests is higher than the limit' do
it 'returns http too many requests' do
(limit * 2).times do |i|
request.call
expect(last_response.status).to eq(429) if i > limit
end
end
end
end
let(:remote_ip) { '1.2.3.5' }
describe 'throttle excessive sign-up requests by IP address' do
context 'through the website' do
let(:limit) { 25 }
let(:request) { ->() { post path, {}, 'REMOTE_ADDR' => remote_ip } }
context 'for exact path' do
let(:path) { '/auth' }
it_behaves_like 'throttled endpoint'
end
context 'for path with format' do
let(:path) { '/auth.html' }
it_behaves_like 'throttled endpoint'
end
end
context 'through the API' do
let(:limit) { 5 }
let(:request) { ->() { post path, {}, 'REMOTE_ADDR' => remote_ip } }
context 'for exact path' do
let(:path) { '/api/v1/accounts' }
it_behaves_like 'throttled endpoint'
end
context 'for path with format' do
let(:path) { '/api/v1/accounts.json' }
it 'returns http not found' do
request.call
expect(last_response.status).to eq(404)
end
end
end
end
describe 'throttle excessive sign-in requests by IP address' do
let(:limit) { 25 }
let(:request) { ->() { post path, {}, 'REMOTE_ADDR' => remote_ip } }
context 'for exact path' do
let(:path) { '/auth/sign_in' }
it_behaves_like 'throttled endpoint'
end
context 'for path with format' do
let(:path) { '/auth/sign_in.html' }
it_behaves_like 'throttled endpoint'
end
end
end