Merge pull request from GHSA-3fjr-858r-92rw

* Fix insufficient origin validation * Bump version to v4.1.13
2024-02-01 15:56:46 +01:00 · 2024-02-01 15:56:46 +01:00 · 5799bc4af7
commit 5799bc4af7
parent fc4e2eca9f
20 changed files with 48 additions and 47 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -3,6 +3,12 @@ Changelog

 All notable changes to this project will be documented in this file.

+## [4.1.13] - 2024-02-01
+
+### Security
+
+- Fix insufficient origin validation (CVE-2024-23832, [GHSA-3fjr-858r-92rw](https://github.com/mastodon/mastodon/security/advisories/GHSA-3fjr-858r-92rw))
+
 ## [4.1.12] - 2024-01-24

 ### Fixed
--- a/SECURITY.md
+++ b/SECURITY.md
@ -14,6 +14,4 @@ A "vulnerability in Mastodon" is a vulnerability in the code distributed through
 | ------- | ---------------- |
 | 4.2.x   | Yes              |
 | 4.1.x   | Yes              |
-| 4.0.x   | No               |
-| 3.5.x   | Until 2023-12-31 |
-| < 3.5   | No               |
+| < 4.1   | No               |
--- a/app/controllers/concerns/signature_verification.rb
+++ b/app/controllers/concerns/signature_verification.rb
@ -263,7 +263,7 @@ module SignatureVerification
      stoplight_wrap_request { ResolveAccountService.new.call(key_id.gsub(/\Aacct:/, ''), suppress_errors: false) }
    elsif !ActivityPub::TagManager.instance.local_uri?(key_id)
      account   = ActivityPub::TagManager.instance.uri_to_actor(key_id)
-      account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id, id: false, suppress_errors: false) }
+      account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id, suppress_errors: false) }
      account
    end
  rescue Mastodon::PrivateNetworkAddressError => e
--- a/app/helpers/jsonld_helper.rb
+++ b/app/helpers/jsonld_helper.rb
@ -157,8 +157,8 @@ module JsonLdHelper
    end
  end

-  def fetch_resource(uri, id, on_behalf_of = nil, request_options: {})
-    unless id
+  def fetch_resource(uri, id_is_known, on_behalf_of = nil, request_options: {})
+    unless id_is_known
      json = fetch_resource_without_id_validation(uri, on_behalf_of)

      return if !json.is_a?(Hash) || unsupported_uri_scheme?(json['id'])
--- a/app/lib/activitypub/activity.rb
+++ b/app/lib/activitypub/activity.rb
@ -153,7 +153,8 @@ class ActivityPub::Activity
  def fetch_remote_original_status
    if object_uri.start_with?('http')
      return if ActivityPub::TagManager.instance.local_uri?(object_uri)
-      ActivityPub::FetchRemoteStatusService.new.call(object_uri, id: true, on_behalf_of: @account.followers.local.first, request_id: @options[:request_id])
+
+      ActivityPub::FetchRemoteStatusService.new.call(object_uri, on_behalf_of: @account.followers.local.first, request_id: @options[:request_id])
    elsif @object['url'].present?
      ::FetchRemoteStatusService.new.call(@object['url'], request_id: @options[:request_id])
    end
--- a/app/lib/activitypub/linked_data_signature.rb
+++ b/app/lib/activitypub/linked_data_signature.rb
@ -19,7 +19,7 @@ class ActivityPub::LinkedDataSignature
    return unless type == 'RsaSignature2017'

    creator = ActivityPub::TagManager.instance.uri_to_actor(creator_uri)
-    creator = ActivityPub::FetchRemoteKeyService.new.call(creator_uri, id: false) if creator&.public_key.blank?
+    creator = ActivityPub::FetchRemoteKeyService.new.call(creator_uri) if creator&.public_key.blank?

    return if creator.nil?

--- a/app/services/activitypub/fetch_remote_account_service.rb
+++ b/app/services/activitypub/fetch_remote_account_service.rb
@ -2,7 +2,7 @@

 class ActivityPub::FetchRemoteAccountService < ActivityPub::FetchRemoteActorService
  # Does a WebFinger roundtrip on each call, unless `only_key` is true
-  def call(uri, id: true, prefetched_body: nil, break_on_redirect: false, only_key: false, suppress_errors: true, request_id: nil)
+  def call(uri, prefetched_body: nil, break_on_redirect: false, only_key: false, suppress_errors: true, request_id: nil)
    actor = super
    return actor if actor.nil? || actor.is_a?(Account)

--- a/app/services/activitypub/fetch_remote_actor_service.rb
+++ b/app/services/activitypub/fetch_remote_actor_service.rb
@ -10,15 +10,15 @@ class ActivityPub::FetchRemoteActorService < BaseService
  SUPPORTED_TYPES = %w(Application Group Organization Person Service).freeze

  # Does a WebFinger roundtrip on each call, unless `only_key` is true
-  def call(uri, id: true, prefetched_body: nil, break_on_redirect: false, only_key: false, suppress_errors: true, request_id: nil)
+  def call(uri, prefetched_body: nil, break_on_redirect: false, only_key: false, suppress_errors: true, request_id: nil)
    return if domain_not_allowed?(uri)
    return ActivityPub::TagManager.instance.uri_to_actor(uri) if ActivityPub::TagManager.instance.local_uri?(uri)

    @json = begin
      if prefetched_body.nil?
-        fetch_resource(uri, id)
+        fetch_resource(uri, true)
      else
-        body_to_json(prefetched_body, compare_id: id ? uri : nil)
+        body_to_json(prefetched_body, compare_id: uri)
      end
    rescue Oj::ParseError
      raise Error, "Error parsing JSON-LD document #{uri}"
--- a/app/services/activitypub/fetch_remote_key_service.rb
+++ b/app/services/activitypub/fetch_remote_key_service.rb
@ -6,23 +6,10 @@ class ActivityPub::FetchRemoteKeyService < BaseService
  class Error < StandardError; end

  # Returns actor that owns the key
-  def call(uri, id: true, prefetched_body: nil, suppress_errors: true)
+  def call(uri, suppress_errors: true)
    raise Error, 'No key URI given' if uri.blank?

-    if prefetched_body.nil?
-      if id
-        @json = fetch_resource_without_id_validation(uri)
-        if actor_type?
-          @json = fetch_resource(@json['id'], true)
-        elsif uri != @json['id']
-          raise Error, "Fetched URI #{uri} has wrong id #{@json['id']}"
-        end
-      else
-        @json = fetch_resource(uri, id)
-      end
-    else
-      @json = body_to_json(prefetched_body, compare_id: id ? uri : nil)
-    end
+    @json = fetch_resource(uri, false)

    raise Error, "Unable to fetch key JSON at #{uri}" if @json.nil?
    raise Error, "Unsupported JSON-LD context for document #{uri}" unless supported_context?(@json)
--- a/app/services/activitypub/fetch_remote_status_service.rb
+++ b/app/services/activitypub/fetch_remote_status_service.rb
@ -7,13 +7,13 @@ class ActivityPub::FetchRemoteStatusService < BaseService
  DISCOVERIES_PER_REQUEST = 1000

  # Should be called when uri has already been checked for locality
-  def call(uri, id: true, prefetched_body: nil, on_behalf_of: nil, expected_actor_uri: nil, request_id: nil)
+  def call(uri, prefetched_body: nil, on_behalf_of: nil, expected_actor_uri: nil, request_id: nil)
    @request_id = request_id || "#{Time.now.utc.to_i}-status-#{uri}"
    @json = begin
      if prefetched_body.nil?
-        fetch_resource(uri, id, on_behalf_of)
+        fetch_resource(uri, true, on_behalf_of)
      else
-        body_to_json(prefetched_body, compare_id: id ? uri : nil)
+        body_to_json(prefetched_body, compare_id: uri)
      end
    end

@ -63,7 +63,7 @@ class ActivityPub::FetchRemoteStatusService < BaseService

  def account_from_uri(uri)
    actor = ActivityPub::TagManager.instance.uri_to_resource(uri, Account)
-    actor = ActivityPub::FetchRemoteAccountService.new.call(uri, id: true, request_id: @request_id) if actor.nil? || actor.possibly_stale?
+    actor = ActivityPub::FetchRemoteAccountService.new.call(uri, request_id: @request_id) if actor.nil? || actor.possibly_stale?
    actor
  end

--- a/app/services/activitypub/process_account_service.rb
+++ b/app/services/activitypub/process_account_service.rb
@ -274,7 +274,7 @@ class ActivityPub::ProcessAccountService < BaseService

  def moved_account
    account   = ActivityPub::TagManager.instance.uri_to_resource(@json['movedTo'], Account)
-    account ||= ActivityPub::FetchRemoteAccountService.new.call(@json['movedTo'], id: true, break_on_redirect: true, request_id: @options[:request_id])
+    account ||= ActivityPub::FetchRemoteAccountService.new.call(@json['movedTo'], break_on_redirect: true, request_id: @options[:request_id])
    account
  end

--- a/app/services/fetch_resource_service.rb
+++ b/app/services/fetch_resource_service.rb
@ -47,7 +47,15 @@ class FetchResourceService < BaseService
      body = response.body_with_limit
      json = body_to_json(body)

-      [json['id'], { prefetched_body: body, id: true }] if supported_context?(json) && (equals_or_includes_any?(json['type'], ActivityPub::FetchRemoteActorService::SUPPORTED_TYPES) || expected_type?(json))
+      return unless supported_context?(json) && (equals_or_includes_any?(json['type'], ActivityPub::FetchRemoteActorService::SUPPORTED_TYPES) || expected_type?(json))
+
+      if json['id'] != @url
+        return if terminal
+
+        return process(json['id'], terminal: true)
+      end
+
+      [@url, { prefetched_body: body }]
    elsif !terminal
      link_header = response['Link'] && parse_link_header(response)

--- a/docker-compose.yml
+++ b/docker-compose.yml
@ -56,7 +56,7 @@ services:

  web:
    build: .
-    image: ghcr.io/mastodon/mastodon:v4.1.12
+    image: ghcr.io/mastodon/mastodon:v4.1.13
    restart: always
    env_file: .env.production
    command: bash -c "rm -f /mastodon/tmp/pids/server.pid; bundle exec rails s -p 3000"
@ -77,7 +77,7 @@ services:

  streaming:
    build: .
-    image: ghcr.io/mastodon/mastodon:v4.1.12
+    image: ghcr.io/mastodon/mastodon:v4.1.13
    restart: always
    env_file: .env.production
    command: node ./streaming
@ -95,7 +95,7 @@ services:

  sidekiq:
    build: .
-    image: ghcr.io/mastodon/mastodon:v4.1.12
+    image: ghcr.io/mastodon/mastodon:v4.1.13
    restart: always
    env_file: .env.production
    command: bundle exec sidekiq
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@ -13,7 +13,7 @@ module Mastodon
    end

    def patch
-      12
+      13
    end

    def flags
--- a/spec/lib/activitypub/linked_data_signature_spec.rb
+++ b/spec/lib/activitypub/linked_data_signature_spec.rb
@ -58,7 +58,7 @@ RSpec.describe ActivityPub::LinkedDataSignature do

        allow(ActivityPub::FetchRemoteKeyService).to receive(:new).and_return(service_stub)

-        allow(service_stub).to receive(:call).with('http://example.com/alice', id: false) do
+        allow(service_stub).to receive(:call).with('http://example.com/alice') do
          sender.update!(public_key: old_key)
          sender
        end
@ -66,7 +66,7 @@ RSpec.describe ActivityPub::LinkedDataSignature do

      it 'fetches key and returns creator' do
        expect(subject.verify_actor!).to eq sender
-        expect(service_stub).to have_received(:call).with('http://example.com/alice', id: false).once
+        expect(service_stub).to have_received(:call).with('http://example.com/alice').once
      end
    end

--- a/spec/services/activitypub/fetch_remote_account_service_spec.rb
+++ b/spec/services/activitypub/fetch_remote_account_service_spec.rb
@ -16,7 +16,7 @@ RSpec.describe ActivityPub::FetchRemoteAccountService, type: :service do
  end

  describe '#call' do
-    let(:account) { subject.call('https://example.com/alice', id: true) }
+    let(:account) { subject.call('https://example.com/alice') }

    shared_examples 'sets profile data' do
      it 'returns an account' do
--- a/spec/services/activitypub/fetch_remote_actor_service_spec.rb
+++ b/spec/services/activitypub/fetch_remote_actor_service_spec.rb
@ -16,7 +16,7 @@ RSpec.describe ActivityPub::FetchRemoteActorService, type: :service do
  end

  describe '#call' do
-    let(:account) { subject.call('https://example.com/alice', id: true) }
+    let(:account) { subject.call('https://example.com/alice') }

    shared_examples 'sets profile data' do
      it 'returns an account' do
--- a/spec/services/activitypub/fetch_remote_key_service_spec.rb
+++ b/spec/services/activitypub/fetch_remote_key_service_spec.rb
@ -43,7 +43,7 @@ RSpec.describe ActivityPub::FetchRemoteKeyService, type: :service do
  end

  describe '#call' do
-    let(:account) { subject.call(public_key_id, id: false) }
+    let(:account) { subject.call(public_key_id) }

    context 'when the key is a sub-object from the actor' do
      before do
--- a/spec/services/fetch_resource_service_spec.rb
+++ b/spec/services/fetch_resource_service_spec.rb
@ -54,7 +54,7 @@ RSpec.describe FetchResourceService, type: :service do

      let(:json) do
        {
-          id: 1,
+          id: 'http://example.com/foo',
          '@context': ActivityPub::TagManager::CONTEXT,
          type: 'Note',
        }.to_json
@ -79,14 +79,14 @@ RSpec.describe FetchResourceService, type: :service do
        let(:content_type) { 'application/activity+json; charset=utf-8' }
        let(:body) { json }

-        it { is_expected.to eq [1, { prefetched_body: body, id: true }] }
+        it { is_expected.to eq ['http://example.com/foo', { prefetched_body: body }] }
      end

      context 'when content type is ld+json with profile' do
        let(:content_type) { 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"' }
        let(:body) { json }

-        it { is_expected.to eq [1, { prefetched_body: body, id: true }] }
+        it { is_expected.to eq ['http://example.com/foo', { prefetched_body: body }] }
      end

      before do
@ -97,14 +97,14 @@ RSpec.describe FetchResourceService, type: :service do
      context 'when link header is present' do
        let(:headers) { { 'Link' => '<http://example.com/foo>; rel="alternate"; type="application/activity+json"', } }

-        it { is_expected.to eq [1, { prefetched_body: json, id: true }] }
+        it { is_expected.to eq ['http://example.com/foo', { prefetched_body: json }] }
      end

      context 'when content type is text/html' do
        let(:content_type) { 'text/html' }
        let(:body) { '<html><head><link rel="alternate" href="http://example.com/foo" type="application/activity+json"/></head></html>' }

-        it { is_expected.to eq [1, { prefetched_body: json, id: true }] }
+        it { is_expected.to eq ['http://example.com/foo', { prefetched_body: json }] }
      end
    end
  end
--- a/spec/services/resolve_url_service_spec.rb
+++ b/spec/services/resolve_url_service_spec.rb
@ -139,6 +139,7 @@ describe ResolveURLService, type: :service do
        stub_request(:get, url).to_return(status: 302, headers: { 'Location' => status_url })
        body = ActiveModelSerializers::SerializableResource.new(status, serializer: ActivityPub::NoteSerializer, adapter: ActivityPub::Adapter).to_json
        stub_request(:get, status_url).to_return(body: body, headers: { 'Content-Type' => 'application/activity+json' })
+        stub_request(:get, uri).to_return(body: body, headers: { 'Content-Type' => 'application/activity+json' })
      end

      it 'returns status by url' do