Merge branch 'jej-fix-missing-access-check-on-issues' into 'security'

Fix missing access checks on issue lookup using IssuableFinder

Split from !2024 to partially solve https://gitlab.com/gitlab-org/gitlab-ce/issues/23867

:warning: - Potentially untested
:bomb: - No test coverage
:traffic_light: - Test coverage of some sort exists (a test failed when error raised)
:vertical_traffic_light: - Test coverage of return value (a test failed when nil used)
:white_check_mark: - Permissions check tested

- [x] :white_check_mark: app/controllers/projects/branches_controller.rb:39
  - `before_action :authorize_push_code!` helpes limit/prevent exploitation. Always checks for reporter access so fine with
    confidential issues, issues only visible to team, etc.
- [x] :traffic_light: app/models/cycle_analytics/summary.rb:9 [`.count`]
- [x] :white_check_mark: app/controllers/projects/todos_controller.rb:19

- [x] Potential double render in app/controllers/projects/todos_controller.rb

- https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/2024/diffs#cedccb227af9bfdf88802767cb58d43c2b977439_24_24

See merge request !2030

2 files changed, 33 insertions, 2 deletions

diff --git a/spec/controllers/projects/branches_controller_spec.rb b/spec/controllers/projects/branches_controller_spec.rb
index f7cf006efd6..b88586b8678 100644
--- a/spec/controllers/projects/branches_controller_spec.rb
+++ b/spec/controllers/projects/branches_controller_spec.rb
@@ -94,6 +94,24 @@ describe Projects::BranchesController do
           branch_name: branch,
           issue_iid: issue.iid
       end
+
+      context 'without issue feature access' do
+        before do
+          project.update!(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
+          project.project_feature.update!(issues_access_level: ProjectFeature::PRIVATE)
+          project.team.truncate
+        end
+
+        it "doesn't post a system note" do
+          expect(SystemNoteService).not_to receive(:new_issue_branch)
+
+          post :create,
+            namespace_id: project.namespace.to_param,
+            project_id: project.to_param,
+            branch_name: branch,
+            issue_iid: issue.iid
+        end
+      end
     end
   end
 
diff --git a/spec/controllers/projects/todo_controller_spec.rb b/spec/controllers/projects/todo_controller_spec.rb
index 936320a3709..193a3f6b5a3 100644
--- a/spec/controllers/projects/todo_controller_spec.rb
+++ b/spec/controllers/projects/todo_controller_spec.rb
@@ -4,7 +4,7 @@ describe Projects::TodosController do
   include ApiHelpers
 
   let(:user)          { create(:user) }
-  let(:project)       { create(:project) }
+  let(:project)       { create(:empty_project) }
   let(:issue)         { create(:issue, project: project) }
   let(:merge_request) { create(:merge_request, source_project: project) }
 
@@ -42,7 +42,7 @@ describe Projects::TodosController do
         end
       end
 
-      context 'when not authorized' do
+      context 'when not authorized for project' do
         it 'does not create todo for issue that user has no access to' do
           sign_in(user)
           expect do
@@ -60,6 +60,19 @@ describe Projects::TodosController do
           expect(response).to have_http_status(302)
         end
       end
+
+      context 'when not authorized for issue' do
+        before do
+          project.update!(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
+          project.project_feature.update!(issues_access_level: ProjectFeature::PRIVATE)
+          sign_in(user)
+        end
+
+        it "doesn't create todo" do
+          expect{ go }.not_to change { user.todos.count }
+          expect(response).to have_http_status(404)
+        end
+      end
     end
   end