Merge branch 'master' of dev.gitlab.org:gitlab/gitlab-ee into jarv/dev-to-gitlab-2019-04-02

CHANGELOG-EE.md

 Please view this file on the master branch, on stable branches it's out of date.
 
+## 11.9.3 (2019-03-27)
+
+### Security (1 change)
+
+- Check label_ids parent when updating issue board.
+
+
+## 11.9.2 (2019-03-26)
+
+### Security (2 changes)
+
+- Geo - Improve security while redirecting user back to the secondary after a logout & re-login via the primary.
+- Check label_ids parent when updating issue board.
+
+
 ## 11.9.1 (2019-03-25)
 
 ### Fixed (1 change)
@@ -222,6 +237,21 @@ Please view this file on the master branch, on stable branches it's out of date.
 - Creates an EE component for the pipeline graph.
 
 
+## 11.7.10 (2019-03-28)
+
+### Security (1 change)
+
+- Check label_ids parent when updating issue board.
+
+
+## 11.7.8 (2019-03-26)
+
+### Security (2 changes)
+
+- Geo - Improve security while redirecting user back to the secondary after a logout & re-login via the primary.
+- Check label_ids parent when updating issue board.
+
+
 ## 11.7.7 (2019-03-19)
 
 - No changes.

CHANGELOG.md

@@ -2,6 +2,14 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
 
+## 11.9.3 (2019-03-27)
+
+- No changes.
+
+## 11.9.2 (2019-03-26)
+
+- No changes.
+
 ## 11.9.1 (2019-03-25)
 
 ### Fixed (7 changes)
@@ -548,6 +556,23 @@ entry.
 - Creates mixin to reduce code duplication between CE and EE in graph component.
 
 
+## 11.7.10 (2019-03-28)
+
+### Security (7 changes)
+
+- Disallow guest users from accessing Releases.
+- Fix PDF.js vulnerability.
+- Hide "related branches" when user does not have permission.
+- Fix XSS in resolve conflicts form.
+- Added rake task for removing EXIF data from existing uploads.
+- Disallow updating namespace when updating a project.
+- Use UntrustedRegexp for matching refs policy.
+
+
+## 11.7.8 (2019-03-26)
+
+- No changes.
+
 ## 11.7.7 (2019-03-19)
 
 ### Security (2 changes)

app/controllers/projects_controller.rb

@@ -47,7 +47,7 @@ class ProjectsController < Projects::ApplicationController
   end
 
   def create
-    @project = ::Projects::CreateService.new(current_user, project_params).execute
+    @project = ::Projects::CreateService.new(current_user, project_params(attributes: project_params_create_attributes)).execute
 
     if @project.saved?
       cookies[:issue_board_welcome_hidden] = { path: project_path(@project), value: nil, expires: Time.at(0) }
@@ -328,9 +328,9 @@ class ProjectsController < Projects::ApplicationController
   end
   # rubocop: enable CodeReuse/ActiveRecord
 
-  def project_params
+  def project_params(attributes: [])
     params.require(:project)
-      .permit(project_params_attributes)
+      .permit(project_params_attributes + attributes)
   end
 
   def project_params_attributes
@@ -349,11 +349,10 @@ class ProjectsController < Projects::ApplicationController
       :last_activity_at,
       :lfs_enabled,
       :name,
-      :namespace_id,
       :only_allow_merge_if_all_discussions_are_resolved,
       :only_allow_merge_if_pipeline_succeeds,
-      :printing_merge_request_link_enabled,
       :path,
+      :printing_merge_request_link_enabled,
       :public_builds,
       :request_access_enabled,
       :runners_token,
@@ -375,6 +374,10 @@ class ProjectsController < Projects::ApplicationController
     ]
   end
 
+  def project_params_create_attributes
+    [:namespace_id]
+  end
+
   def custom_import_params
     {}
   end

app/models/label.rb

@@ -133,6 +133,10 @@ class Label < ApplicationRecord
     1
   end
 
+  def self.by_ids(ids)
+    where(id: ids)
+  end
+
   def open_issues_count(user = nil)
     issues_count(user, state: 'opened')
   end

app/services/issuable_base_service.rb

@@ -70,10 +70,14 @@ class IssuableBaseService < BaseService
   end
 
   def filter_labels
-    filter_labels_in_param(:add_label_ids)
-    filter_labels_in_param(:remove_label_ids)
-    filter_labels_in_param(:label_ids)
-    find_or_create_label_ids
+    params[:add_label_ids] = labels_service.filter_labels_ids_in_param(:add_label_ids) if params[:add_label_ids]
+    params[:remove_label_ids] = labels_service.filter_labels_ids_in_param(:remove_label_ids) if params[:remove_label_ids]
+
+    if params[:label_ids]
+      params[:label_ids] = labels_service.filter_labels_ids_in_param(:label_ids)
+    elsif params[:labels]
+      params[:label_ids] = labels_service.find_or_create_by_titles.map(&:id)
+    end
   end
 
   def filter_labels_in_param(key)
@@ -99,6 +103,10 @@ class IssuableBaseService < BaseService
     end.compact
   end
 
+  def labels_service
+    @labels_service ||= ::Labels::AvailableLabelsService.new(current_user, parent, params)
+  end
+
   def process_label_ids(attributes, existing_label_ids: nil)
     label_ids = attributes.delete(:label_ids)
     add_label_ids = attributes.delete(:add_label_ids)
@@ -116,10 +124,6 @@ class IssuableBaseService < BaseService
     new_label_ids.uniq
   end
 
-  def available_labels
-    @available_labels ||= LabelsFinder.new(current_user, project_id: @project.id, include_ancestor_groups: true).execute
-  end
-
   def handle_quick_actions_on_create(issuable)
     merge_quick_actions_into_params!(issuable)
   end

app/services/labels/available_labels_service.rb

+# frozen_string_literal: true
+module Labels
+  class AvailableLabelsService
+    attr_reader :current_user, :parent, :params
+
+    def initialize(current_user, parent, params)
+      @current_user = current_user
+      @parent = parent
+      @params = params
+    end
+
+    def find_or_create_by_titles
+      labels = params.delete(:labels)
+
+      return [] unless labels
+
+      labels = labels.split(',') if labels.is_a?(String)
+
+      labels.map do |label_name|
+        label = Labels::FindOrCreateService.new(
+          current_user,
+          parent,
+          include_ancestor_groups: true,
+          title: label_name.strip,
+          available_labels: available_labels
+        ).execute
+
+        label
+      end.compact
+    end
+
+    def filter_labels_ids_in_param(key)
+      return [] if params[key].to_a.empty?
+
+      # rubocop:disable CodeReuse/ActiveRecord
+      available_labels.by_ids(params[key]).pluck(:id)
+      # rubocop:enable CodeReuse/ActiveRecord
+    end
+
+    private
+
+    def available_labels
+      @available_labels ||= LabelsFinder.new(current_user, finder_params).execute
+    end
+
+    def finder_params
+      params = { include_ancestor_groups: true }
+
+      case parent
+      when Group
+        params[:group_id] = parent.id
+        params[:only_group_labels] = true
+      when Project
+        params[:project_id] = parent.id
+      end
+
+      params
+    end
+  end
+end

changelogs/unreleased/security-mass-assignment-on-project-update.yml

+---
+title: Disallow updating namespace when updating a project
+merge_request:
+author:
+type: security

ee/app/controllers/ee/sessions_controller.rb

@@ -14,7 +14,7 @@ module EE
       return super if signed_in?
 
       if ::Gitlab::Geo.secondary_with_primary?
-        redirect_to oauth_geo_auth_url(state: geo_login_state.encode)
+        redirect_to oauth_geo_auth_url(host: ::Gitlab::Geo.current_node.url, state: geo_login_state.encode)
       else
         super
       end
@@ -33,7 +33,7 @@ module EE
     end
 
     def geo_login_state
-      ::Gitlab::Geo::Oauth::LoginState.new(return_to: geo_return_to_after_login)
+      ::Gitlab::Geo::Oauth::LoginState.new(return_to: sanitize_redirect(geo_return_to_after_login))
     end
 
     def geo_logout_state

ee/app/services/ee/boards/base_service.rb

@@ -35,20 +35,15 @@ module EE
       # rubocop: enable CodeReuse/ActiveRecord
 
       def set_labels
-        labels = params.delete(:labels)
-
-        return unless labels
-
-        params[:label_ids] = labels.split(",").map do |label_name|
-          label = Labels::FindOrCreateService.new(
-            current_user,
-            parent,
-            title: label_name.strip,
-            include_ancestor_groups: true
-          ).execute
+        if params[:label_ids]
+          params[:label_ids] = labels_service.filter_labels_ids_in_param(:label_ids)
+        elsif params[:labels]
+          params[:label_ids] = labels_service.find_or_create_by_titles.map(&:id)
+        end
+      end
 
-          label.try(:id)
-        end.compact
+      def labels_service
+        @labels_service ||= ::Labels::AvailableLabelsService.new(current_user, parent, params)
       end
     end
   end

ee/changelogs/unreleased/security-geo-2019-q1-recurity-assessment.yml

+---
+title: Geo - Improve security while redirecting user back to the secondary after a
+  logout & re-login via the primary
+merge_request:
+author:
+type: security

ee/changelogs/unreleased/security-milestone-labels.yml

+---
+title: Check label_ids parent when updating issue board
+merge_request:
+author:
+type: security

ee/lib/gitlab/geo/oauth/login_state.rb

@@ -7,40 +7,57 @@ module Gitlab
         attr_reader :return_to
 
         def self.from_state(state)
-          salt, hmac, return_to = state.to_s.split(':', 3)
-          self.new(salt: salt, hmac: hmac, return_to: return_to)
+          salt, token, return_to = state.to_s.split(':', 3)
+          self.new(salt: salt, token: token, return_to: return_to)
         end
 
-        def initialize(return_to:, salt: nil, hmac: nil)
-          @return_to = return_to
+        def initialize(return_to:, salt: nil, token: nil)
+          @return_to = Gitlab::ReturnToLocation.new(return_to).full_path
           @salt = salt
-          @hmac = hmac
+          @token = token
         end
 
-        def valid?
-          return false unless salt.present? && hmac.present?
-
-          hmac == generate_hmac
+        def encode
+          "#{salt}:#{hmac_token}:#{return_to}"
         end
 
-        def encode
-          "#{salt}:#{generate_hmac}:#{return_to}"
+        def valid?
+          return false unless salt.present? && token.present?
+
+          decoded_token = JSONWebToken::HMACToken.decode(token, key).first
+          secure_compare(decoded_token.dig('data', 'return_to'))
+        rescue JWT::DecodeError
+          false
         end
 
         private
 
-        attr_reader :hmac
+        attr_reader :token
 
-        def generate_hmac
-          digest = OpenSSL::Digest::SHA256.new
-          key = Gitlab::Application.secrets.secret_key_base + salt
+        def expiration_time
+          1.minute
+        end
+
+        def hmac_token
+          hmac_token = JSONWebToken::HMACToken.new(key)
+          hmac_token.expire_time = Time.now + expiration_time
+          hmac_token[:data] = { return_to: return_to.to_s }
+          hmac_token.encoded
+        end
 
-          OpenSSL::HMAC.hexdigest(digest, key, return_to.to_s)
+        def key
+          ActiveSupport::KeyGenerator
+            .new(Gitlab::Application.secrets.secret_key_base)
+            .generate_key(salt)
         end
 
         def salt
           @salt ||= SecureRandom.hex(8)
         end
+
+        def secure_compare(value)
+          ActiveSupport::SecurityUtils.secure_compare(return_to.to_s, value)
+        end
       end
     end
   end

ee/spec/controllers/ee/sessions_controller_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe SessionsController do
+  include DeviseHelpers
+  include EE::GeoHelpers
+
+  describe '#new' do
+    before do
+      set_devise_mapping(context: @request)
+    end
+
+    context 'on a Geo secondary node' do
+      set(:primary_node) { create(:geo_node, :primary) }
+      set(:secondary_node) { create(:geo_node) }
+
+      before do
+        stub_current_geo_node(secondary_node)
+      end
+
+      shared_examples 'a valid oauth authentication redirect' do
+        it 'redirects to the correct oauth_geo_auth_url' do
+          get(:new)
+
+          redirect_uri = URI.parse(response.location)
+          redirect_params = CGI.parse(redirect_uri.query)
+
+          expect(response).to have_gitlab_http_status(302)
+          expect(response).to redirect_to %r(\A#{primary_node.url}oauth/geo/auth)
+          expect(redirect_params['state'].first).to end_with(':')
+        end
+      end
+
+      context 'with a tampered HOST header' do
+        before do
+          request.headers['HOST'] = 'http://this.is.not.my.host'
+        end
+
+        it_behaves_like 'a valid oauth authentication redirect'
+      end
+
+      context 'with a tampered X-Forwarded-Host header' do
+        before do
+          request.headers['X-Forwarded-Host'] = 'http://this.is.not.my.host'
+        end
+
+        it_behaves_like 'a valid oauth authentication redirect'
+      end
+
+      context 'without a tampered header' do
+        it_behaves_like 'a valid oauth authentication redirect'
+      end
+    end
+  end
+end

ee/spec/controllers/oauth/geo_auth_controller_spec.rb

@@ -27,12 +27,34 @@ describe Oauth::GeoAuthController do
       expect(response).to redirect_to(root_url)
     end
 
-    it "redirects to primary node's oauth endpoint" do
-      oauth_endpoint = Gitlab::Geo::Oauth::Session.new.authorize_url(redirect_uri: oauth_geo_callback_url, state: login_state)
+    shared_examples "a valid redirect to to primary node's oauth endpoint" do
+      it "redirects to primary node's oauth endpoint" do
+        oauth_endpoint = Gitlab::Geo::Oauth::Session.new.authorize_url(redirect_uri: oauth_geo_callback_url, state: login_state)
 
-      get :auth, params: { state: login_state }
+        get :auth, params: { state: login_state }
+
+        expect(response).to redirect_to(oauth_endpoint)
+      end
+    end
+
+    context 'without a tampered header' do
+      it_behaves_like "a valid redirect to to primary node's oauth endpoint"
+    end
+
+    context 'with a tampered HOST header' do
+      before do
+        request.headers['HOST'] = 'http://this.is.not.my.host'
+      end
+
+      it_behaves_like "a valid redirect to to primary node's oauth endpoint"
+    end
+
+    context 'with a tampered X-Forwarded-Host header' do
+      before do
+        request.headers['X-Forwarded-Host'] = 'http://this.is.not.my.host'
+      end
 
-      expect(response).to redirect_to(oauth_endpoint)
+      it_behaves_like "a valid redirect to to primary node's oauth endpoint"
     end
   end
 
@@ -55,16 +77,40 @@ describe Oauth::GeoAuthController do
         expect(response).to redirect_to(new_user_session_path)
       end
 
-      it 'redirects to redirect_url if state is valid' do
-        get :callback, params: { state: login_state }
+      context 'with a valid state' do
+        shared_examples 'a valid redirect to redirect_url' do
+          it "redirects to primary node's oauth endpoint" do
+            get :callback, params: { state: login_state }
 
-        expect(response).to redirect_to(secondary_node.url)
-      end
+            expect(response).to redirect_to('/')
+          end
+        end
 
-      it 'does not display a flash message if state is valid' do
-        get :callback, params: { state: login_state }
+        context 'without a tampered header' do
+          it_behaves_like 'a valid redirect to redirect_url'
+        end
+
+        context 'with a tampered HOST header' do
+          before do
+            request.headers['HOST'] = 'http://this.is.not.my.host'
+          end
+
+          it_behaves_like 'a valid redirect to redirect_url'
+        end
+
+        context 'with a tampered X-Forwarded-Host header' do
+          before do
+            request.headers['X-Forwarded-Host'] = 'http://this.is.not.my.host'
+          end
+
+          it_behaves_like 'a valid redirect to redirect_url'
+        end
+
+        it 'does not display a flash message' do
+          get :callback, params: { state: login_state }
 
-        expect(controller).to set_flash[:alert].to(nil)
+          expect(controller).to set_flash[:alert].to(nil)
+        end
       end
     end
 

ee/spec/controllers/projects/boards_controller_spec.rb

@@ -141,7 +141,7 @@ describe Projects::BoardsController do
     let(:board) { create(:board, project: project, name: 'Backend') }
     let(:user) { create(:user) }
     let(:milestone) { create(:milestone, project: project) }
-    let(:label) { create(:label) }
+    let(:label) { create(:label, project: project) }
 
     let(:update_params) do
       { name: 'Frontend',

ee/spec/lib/gitlab/geo/oauth/login_state_spec.rb

@@ -3,9 +3,14 @@
 require 'spec_helper'
 
 describe Gitlab::Geo::Oauth::LoginState do
-  let(:salt) { '100d8cbd1750a2bb' }
-  let(:hmac) { '62fdcface89baab582f33de6672f10499974c28b5cc269795c4830b8b3ab06be' }
-  let(:oauth_return_to) { 'http://fake-secondary.com:3000/project/test' }
+  let(:salt) { 'b9653b6aa2ff6b54' }
+  let(:token) { 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJkYXRhIjp7InJldHVybl90byI6Ii9wcm9qZWN0L3Rlc3Q_Zm9vPWJhciN6b28ifSwianRpIjoiODdjZDQ2M2MtOTgyNC00ZjliLWI5NDMtOGFkMjJmY2E2MmZhIiwiaWF0IjoxNTQ5ODI1MjAwLCJuYmYiOjE1NDk4MjUxOTUsImV4cCI6MTU0OTgyNTI2MH0.qZE6kuoeW6BK1URuIl8l8MiCfGjtTTXixVdMCE80gVA' }
+  let(:return_to) { 'http://fake-secondary.com:3000/project/test?foo=bar#zoo' }
+  let(:timestamp) { Time.utc(2019, 2, 10, 19, 0, 0) }
+
+  around do |example|
+    Timecop.freeze(timestamp) { example.run }
+  end
 
   before do
     allow(Gitlab::Application.secrets).to receive(:secret_key_base)
@@ -22,7 +27,7 @@ describe Gitlab::Geo::Oauth::LoginState do
     end
 
     it 'returns a valid instance when state is valid' do
-      expect(described_class.from_state("#{salt}:#{hmac}:#{oauth_return_to}")).to be_valid
+      expect(described_class.from_state("#{salt}:#{token}:#{return_to}")).to be_valid
     end
   end
 
@@ -39,32 +44,42 @@ describe Gitlab::Geo::Oauth::LoginState do
       expect(subject.valid?).to eq false
     end
 
-    it 'returns false when hmac is nil' do
-      subject = described_class.new(return_to: oauth_return_to, salt: salt, hmac: nil)
+    it 'returns false when token is nil' do
+      subject = described_class.new(return_to: return_to, salt: salt, token: nil)
 
       expect(subject.valid?).to eq false
     end
 
-    it 'returns false when hmac is empty' do
-      subject = described_class.new(return_to: oauth_return_to, salt: salt, hmac: '')
+    it 'returns false when token is empty' do
+      subject = described_class.new(return_to: return_to, salt: salt, token: '')
 
       expect(subject.valid?).to eq false
     end
 
     it 'returns false when salt not match' do
-      subject = described_class.new(return_to: oauth_return_to, salt: 'salt', hmac: hmac)
+      subject = described_class.new(return_to: return_to, salt: 'invalid-salt', token: token)
 
       expect(subject.valid?).to eq(false)
     end
 
-    it 'returns false when hmac does not match' do
-      subject = described_class.new(return_to: oauth_return_to, salt: salt, hmac: 'hmac')
+    it 'returns false when token does not match' do
+      subject = described_class.new(return_to: return_to, salt: salt, token: 'invalid-token')
 
       expect(subject.valid?).to eq(false)
     end
 
-    it 'returns true when hmac matches' do
-      subject = described_class.new(return_to: oauth_return_to, salt: salt, hmac: hmac)
+    it "returns false when token's expired" do
+      subject = described_class.new(return_to: return_to, salt: salt, token: token)
+
+      # Needs to be at least 120 seconds, because the default expiry is
+      # 60 seconds with an additional 60 second leeway.
+      Timecop.freeze(timestamp + 125) do
+        expect(subject.valid?).to eq(false)
+      end
+    end
+
+    it 'returns true when token matches' do
+      subject = described_class.new(return_to: return_to, salt: salt, token: token)
 
       expect(subject.valid?).to eq(true)
     end
@@ -77,14 +92,34 @@ describe Gitlab::Geo::Oauth::LoginState do
       expect { subject.encode }.not_to raise_error
     end
 
-    it 'returns a string with salt, hmac, and return_to colon separated' do
-      subject = described_class.new(return_to: oauth_return_to)
+    it 'returns a string with salt, token, and return_to colon separated' do
+      subject = described_class.new(return_to: return_to)
 
-      salt, hmac, return_to = subject.encode.split(':', 3)
+      salt, token, return_to = subject.encode.split(':', 3)
 
       expect(salt).not_to be_blank
-      expect(hmac).not_to be_blank
-      expect(return_to).to eq oauth_return_to
+      expect(token).not_to be_blank
+      expect(return_to).to eq return_to
+    end
+  end
+
+  describe '#return_to' do
+    it 'returns nil when return_to is nil' do
+      subject = described_class.new(return_to: nil)
+
+      expect(subject.return_to).to be_nil
+    end
+
+    it 'returns an empty string when return_to is empty' do
+      subject = described_class.new(return_to: '')
+
+      expect(subject.return_to).to eq('')
+    end
+
+    it 'returns the full path of the return_to URL' do
+      subject = described_class.new(return_to: return_to)
+
+      expect(subject.return_to).to eq('/project/test?foo=bar#zoo')
     end
   end
 end

ee/spec/services/boards/update_service_spec.rb

@@ -17,7 +17,7 @@ describe Boards::UpdateService, services: true do
   end
 
   describe '#execute' do
-    let(:project) { create(:project) }
+    let(:project) { create(:project, group: group) }
     let(:group) { create(:group) }
     let!(:board)  { create(:board, group: group, name: 'Backend') }
 
@@ -44,10 +44,11 @@ describe Boards::UpdateService, services: true do
     it 'updates the configuration params when scoped issue board is enabled' do
       stub_licensed_features(scoped_issue_board: true)
       assignee = create(:user)
-      milestone = create(:milestone, project: project)
-      label = create(:label, project: project)
+      milestone = create(:milestone, group: group)
+      label = create(:group_label, group: board.group)
+      user = create(:user)
 
-      service = described_class.new(project, double,
+      service = described_class.new(group, user,
                                     milestone_id: milestone.id,
                                     assignee_id: assignee.id,
                                     label_ids: [label.id])
@@ -213,6 +214,18 @@ describe Boards::UpdateService, services: true do
             expect_label_assigned(user, board, %w{group_label project_label new_label}, %w{group_label project_label})
           end
         end
+
+        context 'when label_ids param is provided' do
+          it 'updates using only labels accessible by the project board' do
+            other_project_label = create(:label, title: 'other_project_label')
+            other_group_label = create(:group_label, title: 'other_group_label')
+            label_ids = [group_label.id, label.id, other_project_label.id, other_group_label.id]
+
+            described_class.new(board.parent, user, label_ids: label_ids).execute(board)
+
+            expect(board.reload.labels).to contain_exactly(group_label, label)
+          end
+        end
       end
     end
   end

spec/controllers/projects_controller_spec.rb

@@ -392,6 +392,23 @@ describe ProjectsController do
         end
       end
 
+      it 'does not update namespace' do
+        controller.instance_variable_set(:@project, project)
+
+        params = {
+          namespace_id: 'test'
+        }
+
+        expect do
+          put :update,
+            params: {
+              namespace_id: project.namespace,
+              id: project.id,
+              project: params
+            }
+        end.not_to change { project.namespace.reload }
+      end
+
       def update_project(**parameters)
         put :update,
             params: {

spec/services/labels/available_labels_service_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+describe Labels::AvailableLabelsService do
+  let(:user) { create(:user) }
+  let(:project) { create(:project, :public, group: group) }
+  let(:group) { create(:group) }
+
+  let(:project_label) { create(:label, project: project) }
+  let(:other_project_label) { create(:label) }
+  let(:group_label) { create(:group_label, group: group) }
+  let(:other_group_label) { create(:group_label) }
+  let(:labels) { [project_label, other_project_label, group_label, other_group_label] }
+
+  context '#find_or_create_by_titles' do
+    let(:label_titles) { labels.map(&:title).push('non existing title') }
+
+    context 'when parent is a project' do
+      context 'when a user is not a project member' do
+        it 'returns only relevant label ids' do
+          result = described_class.new(user, project, labels: label_titles).find_or_create_by_titles
+
+          expect(result).to match_array([project_label, group_label])
+        end
+      end
+
+      context 'when a user is a project member' do
+        before do
+          project.add_developer(user)
+        end
+
+        it 'creates new labels for not found titles' do
+          result = described_class.new(user, project, labels: label_titles).find_or_create_by_titles
+
+          expect(result.count).to eq(5)
+          expect(result).to include(project_label, group_label)
+          expect(result).not_to include(other_project_label, other_group_label)
+        end
+      end
+    end
+
+    context 'when parent is a group' do
+      context 'when a user is not a group member' do
+        it 'returns only relevant label ids' do
+          result = described_class.new(user, group, labels: label_titles).find_or_create_by_titles
+
+          expect(result).to match_array([group_label])
+        end
+      end
+
+      context 'when a user is a group member' do
+        before do
+          group.add_developer(user)
+        end
+
+        it 'creates new labels for not found titles' do
+          result = described_class.new(user, group, labels: label_titles).find_or_create_by_titles
+
+          expect(result.count).to eq(5)
+          expect(result).to include(group_label)
+          expect(result).not_to include(project_label, other_project_label, other_group_label)
+        end
+      end
+    end
+  end
+
+  context '#filter_labels_ids_in_param' do
+    let(:label_ids) { labels.map(&:id).push(99999) }
+
+    context 'when parent is a project' do
+      it 'returns only relevant label ids' do
+        result = described_class.new(user, project, ids: label_ids).filter_labels_ids_in_param(:ids)
+
+        expect(result).to match_array([project_label.id, group_label.id])
+      end
+    end
+
+    context 'when parent is a group' do
+      it 'returns only relevant label ids' do
+        result = described_class.new(user, group, ids: label_ids).filter_labels_ids_in_param(:ids)
+
+        expect(result).to match_array([group_label.id])
+      end
+    end
+  end
+end