Merge branch 'render-json-leak' into 'security'

fix for render json include leaks

See merge request !2074
Conflicts:
	app/controllers/projects/merge_requests_controller.rb
	spec/controllers/projects/issues_controller_spec.rb

app/controllers/projects/issues_controller.rb

@@ -126,7 +126,7 @@ class Projects::IssuesController < Projects::ApplicationController
       end
       format.json do
-        render json: @issue.to_json(include: { milestone: {}, assignee: { methods: :avatar_url }, labels: { methods: :text_color } }, methods: [:task_status, :task_status_short])
+        render json: @issue.to_json(include: { milestone: {}, assignee: { only: [:name, :username], methods: [:avatar_url] }, labels: { methods: :text_color } }, methods: [:task_status, :task_status_short])
       end
     end

app/controllers/projects/merge_requests_controller.rb

@@ -288,7 +288,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
                        @merge_request.target_project, @merge_request])
         end
         format.json do
-          render json: @merge_request.to_json(include: { milestone: {}, assignee: { methods: :avatar_url }, labels: { methods: :text_color } }, methods: [:task_status, :task_status_short])
+          render json: @merge_request.to_json(include: { milestone: {}, assignee: { only: [:name, :username], methods: [:avatar_url] }, labels: { methods: :text_color } }, methods: [:task_status, :task_status_short])
         end
       end
     else

spec/controllers/projects/issues_controller_spec.rb

@@ -123,6 +123,29 @@ describe Projects::IssuesController do
   end
   describe 'PUT #update' do
+    before do
+      sign_in(user)
+      project.team << [user, :developer]
+    end
+
+    context 'changing the assignee' do
+      it 'limits the attributes exposed on the assignee' do
+        assignee = create(:user)
+        project.add_developer(assignee)
+
+        put :update,
+          namespace_id: project.namespace.to_param,
+          project_id: project,
+          id: issue.iid,
+          issue: { assignee_id: assignee.id },
+          format: :json
+        body = JSON.parse(response.body)
+
+        expect(body['assignee'].keys)
+          .to match_array(%w(name username avatar_url))
+      end
+    end
+
     context 'when moving issue to another private project' do
       let(:another_project) { create(:empty_project, :private) }

spec/controllers/projects/merge_requests_controller_spec.rb

@@ -197,6 +197,24 @@ describe Projects::MergeRequestsController do
   end
   describe 'PUT update' do
+    context 'changing the assignee' do
+      it 'limits the attributes exposed on the assignee' do
+        assignee = create(:user)
+        project.add_developer(assignee)
+
+        put :update,
+          namespace_id: project.namespace.to_param,
+          project_id: project,
+          id: merge_request.iid,
+          merge_request: { assignee_id: assignee.id },
+          format: :json
+        body = JSON.parse(response.body)
+
+        expect(body['assignee'].keys)
+          .to match_array(%w(name username avatar_url))
+      end
+    end
+
     context 'there is no source project' do
       let(:project)       { create(:project) }
       let(:fork_project)  { create(:forked_project_with_submodules) }