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

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* Fix insufficient origin validation

* Bump version to v3.5.17
This commit is contained in:
Claire 2024-02-01 15:56:46 +01:00 committed by GitHub
parent 35f21191ee
commit b1ed009c65
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GPG Key ID: B5690EEEBB952194
17 changed files with 46 additions and 43 deletions
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8
CHANGELOG.md
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@ -5,9 +5,15 @@ All notable changes to this project will be documented in this file.
## End of life notice
**The 3.5.x branch will not receive any update after 2023-12-31.**
**The 3.5.x branch has reached its end of life and will not receive any further update.**
This means that no security fix will be made available for this branch after this date, and you will need to update to a more recent version (such as the 4.2.x branch) to receive security fixes.
## [3.5.17] - 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))
## [3.5.16] - 2023-12-04
### Changed

2
SECURITY.md
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@ -15,5 +15,5 @@ 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.x | No |
| < 3.5 | No |

2
app/controllers/concerns/signature_verification.rb
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@ -219,7 +219,7 @@ module SignatureVerification
stoplight_wrap_request { ResolveAccountService.new.call(key_id.gsub(/\Aacct:/, '')) }
elsif !ActivityPub::TagManager.instance.local_uri?(key_id)
account = ActivityPub::TagManager.instance.uri_to_resource(key_id, Account)
account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id, id: false) }
account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id) }
account
end
rescue Mastodon::HostValidationError

4
app/helpers/jsonld_helper.rb
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@ -157,8 +157,8 @@ module JsonLdHelper
end
end
def fetch_resource(uri, id, on_behalf_of = nil)
unless id
def fetch_resource(uri, id_is_known, on_behalf_of = nil)
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'])

3
app/lib/activitypub/activity.rb
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@ -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

2
app/lib/activitypub/linked_data_signature.rb
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@ -19,7 +19,7 @@ class ActivityPub::LinkedDataSignature
return unless type == 'RsaSignature2017'
creator = ActivityPub::TagManager.instance.uri_to_resource(creator_uri, Account)
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?

6
app/services/activitypub/fetch_remote_account_service.rb
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@ -8,15 +8,15 @@ class ActivityPub::FetchRemoteAccountService < 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, request_id: nil)
def call(uri, prefetched_body: nil, break_on_redirect: false, only_key: false, request_id: nil)
return if domain_not_allowed?(uri)
return ActivityPub::TagManager.instance.uri_to_resource(uri, Account) 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
end

17
app/services/activitypub/fetch_remote_key_service.rb
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@ -4,23 +4,10 @@ class ActivityPub::FetchRemoteKeyService < BaseService
include JsonLdHelper
# Returns account that owns the key
def call(uri, id: true, prefetched_body: nil)
def call(uri)
return if uri.blank?
if prefetched_body.nil?
if id
@json = fetch_resource_without_id_validation(uri)
if person?
@json = fetch_resource(@json['id'], true)
elsif uri != @json['id']
return
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)
return unless supported_context?(@json) && expected_type?
return find_account(@json['id'], @json) if person?

8
app/services/activitypub/fetch_remote_status_service.rb
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@ -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

2
app/services/activitypub/process_account_service.rb
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@ -269,7 +269,7 @@ 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

10
app/services/fetch_resource_service.rb
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@ -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::FetchRemoteAccountService::SUPPORTED_TYPES) || expected_type?(json))
return unless supported_context?(json) && (equals_or_includes_any?(json['type'], ActivityPub::FetchRemoteAccountService::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)

6
docker-compose.yml
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@ -44,7 +44,7 @@ services:
web:
build: .
image: ghcr.io/mastodon/mastodon:v3.5.16
image: ghcr.io/mastodon/mastodon:v3.5.17
restart: always
env_file: .env.production
command: bash -c "rm -f /mastodon/tmp/pids/server.pid; bundle exec rails s -p 3000"
@ -65,7 +65,7 @@ services:
streaming:
build: .
image: ghcr.io/mastodon/mastodon:v3.5.16
image: ghcr.io/mastodon/mastodon:v3.5.17
restart: always
env_file: .env.production
command: node ./streaming
@ -83,7 +83,7 @@ services:
sidekiq:
build: .
image: ghcr.io/mastodon/mastodon:v3.5.16
image: ghcr.io/mastodon/mastodon:v3.5.17
restart: always
env_file: .env.production
command: bundle exec sidekiq

2
lib/mastodon/version.rb
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@ -13,7 +13,7 @@ module Mastodon
end
def patch
16
17
end
def flags

4
spec/lib/activitypub/linked_data_signature_spec.rb
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@ -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_account!).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

2
spec/services/activitypub/fetch_remote_account_service_spec.rb
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@ -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

10
spec/services/fetch_resource_service_spec.rb
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@ -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

1
spec/services/resolve_url_service_spec.rb
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@ -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