Add Security configuration page for non-Ultimate

- Added CE configuration_controller
- Added read_security_configuration ability
- Added Configuration sidebar entry

Adresses: https://gitlab.com/gitlab-org/gitlab/-/issues/294033Co-authored-by: Mark Florian <mflorian@gitlab.com>

app/controllers/projects/security/configuration_controller.rb

+# frozen_string_literal: true
+
+module Projects
+  module Security
+    class ConfigurationController < Projects::ApplicationController
+      feature_category :static_application_security_testing
+
+      def show
+        return render_404 unless feature_enabled?
+
+        render_403 unless can?(current_user, :read_security_configuration, project)
+      end
+
+      private
+
+      def feature_enabled?
+        ::Feature.enabled?(:secure_security_and_compliance_configuration_page_on_ce, @project, default_enabled: :yaml)
+      end
+    end
+  end
+end
+
+Projects::Security::ConfigurationController.prepend_if_ee('EE::Projects::Security::ConfigurationController')

app/helpers/projects_helper.rb

@@ -139,6 +139,10 @@ module ProjectsHelper
     project_nav_tabs.include? name
   end
 
+  def any_project_nav_tab?(tabs)
+    tabs.any? { |tab| project_nav_tab?(tab) }
+  end
+
   def project_for_deploy_key(deploy_key)
     if deploy_key.has_access_to?(@project)
       @project
@@ -374,6 +378,20 @@ module ProjectsHelper
 
   private
 
+  def can_read_security_configuration?(project, current_user)
+    ::Feature.enabled?(:secure_security_and_compliance_configuration_page_on_ce, @subject, default_enabled: :yaml) &&
+      can?(current_user, :read_security_configuration, project)
+  end
+
+  def get_project_security_nav_tabs(project, current_user)
+    if can_read_security_configuration?(project, current_user)
+      [:security_and_compliance, :security_configuration]
+    else
+      []
+    end
+  end
+
+  # rubocop:disable Metrics/CyclomaticComplexity
   def get_project_nav_tabs(project, current_user)
     nav_tabs = [:home]
 
@@ -382,6 +400,8 @@ module ProjectsHelper
       nav_tabs << :releases if can?(current_user, :read_release, project)
     end
 
+    nav_tabs += get_project_security_nav_tabs(project, current_user)
+
     if project.repo_exists? && can?(current_user, :read_merge_request, project)
       nav_tabs << :merge_requests
     end
@@ -415,6 +435,7 @@ module ProjectsHelper
 
     nav_tabs
   end
+  # rubocop:enable Metrics/CyclomaticComplexity
 
   def package_nav_tabs(project, current_user)
     [].tap do |tabs|
@@ -695,6 +716,12 @@ module ProjectsHelper
     "#{request.path}?#{options.to_param}"
   end
 
+  def sidebar_security_configuration_paths
+    %w[
+      projects/security/configuration#show
+    ]
+  end
+
   def sidebar_projects_paths
     %w[
       projects#show
@@ -759,6 +786,10 @@ module ProjectsHelper
     ]
   end
 
+  def sidebar_security_paths
+    %w[projects/security/configuration#show]
+  end
+
   def user_can_see_auto_devops_implicitly_enabled_banner?(project, user)
     Ability.allowed?(user, :admin_project, project) &&
       project.has_auto_devops_implicitly_enabled? &&

app/policies/project_policy.rb

@@ -581,6 +581,10 @@ class ProjectPolicy < BasePolicy
     enable :read_issue_link
   end
 
+  rule { can?(:developer_access) }.policy do
+    enable :read_security_configuration
+  end
+
   # Design abilities could also be prevented in the issue policy.
   rule { design_management_disabled }.policy do
     prevent :read_design

app/views/layouts/nav/sidebar/_project_security_link.html.haml

+- top_level_link = project_security_configuration_path(@project)
+- top_level_qa_selector = 'security_configuration_link'
+- if any_project_nav_tab?([:security_configuration])
+  = nav_link(path: sidebar_security_paths) do
+    = link_to top_level_link, data: { qa_selector: top_level_qa_selector } do
+      .nav-icon-container
+        = sprite_icon('shield')
+      %span.nav-item-name
+        = _('Security & Compliance')
+
+    %ul.sidebar-sub-level-items
+      = nav_link(path: sidebar_security_paths, html_options: { class: "fly-out-top-item" } ) do
+        = link_to top_level_link do
+          %strong.fly-out-top-item-name
+            = _('Security & Compliance')
+
+      %li.divider.fly-out-top-item
+      - if project_nav_tab?(:security_configuration)
+        = nav_link(path: sidebar_security_configuration_paths) do
+          = link_to project_security_configuration_path(@project), title: _('Configuration'), data: { qa_selector: 'security_configuration_link'} do
+            %span= _('Configuration')

app/views/projects/security/configuration/show.html.haml

+- breadcrumb_title _("Security Configuration")
+- page_title _("Security Configuration")
+
+#js-security-configuration-static

config/feature_flags/development/secure_security_and_compliance_configuration_page_on_ce.yml

+---
+name: secure_security_and_compliance_configuration_page_on_ce
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/50282
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/294076
+milestone: '13.9'
+type: development
+group: group::static analysis
+default_enabled: false

config/routes/project.rb

@@ -37,6 +37,10 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
           end
         end
 
+        namespace :security do
+          resource :configuration, only: [:show], controller: :configuration
+        end
+
         resources :artifacts, only: [:index, :destroy]
 
         resources :packages, only: [:index, :show, :destroy], module: :packages

ee/app/assets/javascripts/security_configuration/index.js

@@ -4,6 +4,11 @@ import SecurityConfigurationApp from './components/app.vue';
 
 export default function init() {
   const el = document.getElementById('js-security-configuration');
+
+  if (!el) {
+    return null;
+  }
+
   const {
     autoDevopsHelpPagePath,
     autoDevopsPath,

ee/app/controllers/ee/projects/security/configuration_controller.rb

+# frozen_string_literal: true
+module EE
+  module Projects
+    module Security
+      module ConfigurationController
+        extend ActiveSupport::Concern
+        extend ::Gitlab::Utils::Override
+
+        prepended do
+          alias_method :vulnerable, :project
+
+          before_action :ensure_security_dashboard_feature_enabled!, except: [:show]
+          before_action :authorize_read_security_dashboard!, except: [:show]
+
+          before_action only: [:show] do
+            push_frontend_feature_flag(:security_auto_fix, project, default_enabled: false)
+            push_frontend_feature_flag(:sast_configuration_ui, project, default_enabled: true)
+            push_frontend_feature_flag(:api_fuzzing_configuration_ui, project, default_enabled: :yaml)
+          end
+
+          before_action only: [:auto_fix] do
+            check_feature_flag!
+            authorize_modify_auto_fix_setting!
+          end
+
+          feature_category :static_application_security_testing
+        end
+
+        # rubocop:disable Gitlab/ModuleWithInstanceVariables
+        override :show
+        def show
+          return super unless security_dashboard_feature_enabled? && can_read_security_dashboard?
+
+          @configuration = ::Projects::Security::ConfigurationPresenter.new(project,
+                                                                            auto_fix_permission: auto_fix_authorized?,
+                                                                            current_user: current_user)
+          respond_to do |format|
+            format.html
+            format.json do
+              render status: :ok, json: @configuration.to_h
+            end
+          end
+        end
+        # rubocop:enable Gitlab/ModuleWithInstanceVariables
+
+        def auto_fix
+          service = ::Security::Configuration::SaveAutoFixService.new(project, auto_fix_params[:feature])
+
+          return respond_422 unless service.execute(enabled: auto_fix_params[:enabled])
+
+          render status: :ok, json: auto_fix_settings
+        end
+
+        private
+
+        def auto_fix_authorized?
+          can?(current_user, :modify_auto_fix_setting, project)
+        end
+
+        def auto_fix_params
+          @auto_fix_params ||= begin
+            fix_params = params.permit(:feature, :enabled)
+            feature = fix_params[:feature]
+            fix_params[:feature] = feature.blank? ? 'all' : feature.to_s
+            fix_params
+          end
+        end
+
+        def check_auto_fix_permissions!
+          render_403 unless auto_fix_authorized?
+        end
+
+        def check_feature_flag!
+          render_404 if ::Feature.disabled?(:security_auto_fix, project)
+        end
+
+        def auto_fix_settings
+          setting = project.security_setting
+
+          {
+            dependency_scanning: setting.auto_fix_dependency_scanning,
+            container_scanning: setting.auto_fix_container_scanning
+          }
+        end
+
+        def security_dashboard_feature_enabled?
+          vulnerable.feature_available?(:security_dashboard)
+        end
+
+        def can_read_security_dashboard?
+          can?(current_user, :read_project_security_dashboard, vulnerable)
+        end
+
+        def ensure_security_dashboard_feature_enabled!
+          render_404 unless security_dashboard_feature_enabled?
+        end
+
+        def authorize_read_security_dashboard!
+          render_403 unless can_read_security_dashboard?
+        end
+      end
+    end
+  end
+end

ee/app/controllers/projects/security/configuration_controller.rb

-# frozen_string_literal: true
-
-module Projects
-  module Security
-    class ConfigurationController < Projects::ApplicationController
-      include SecurityDashboardsPermissions
-
-      alias_method :vulnerable, :project
-
-      before_action only: [:show] do
-        push_frontend_feature_flag(:security_auto_fix, project, default_enabled: false)
-        push_frontend_feature_flag(:sast_configuration_ui, project, default_enabled: true)
-        push_frontend_feature_flag(:api_fuzzing_configuration_ui, project, default_enabled: :yaml)
-      end
-
-      before_action only: [:auto_fix] do
-        check_feature_flag!
-        authorize_modify_auto_fix_setting!
-      end
-
-      feature_category :static_application_security_testing
-
-      def show
-        @configuration = ConfigurationPresenter.new(project,
-                                                    auto_fix_permission: auto_fix_authorized?,
-                                                    current_user: current_user)
-        respond_to do |format|
-          format.html
-          format.json do
-            render status: :ok, json: @configuration.to_h
-          end
-        end
-      end
-
-      def auto_fix
-        service = ::Security::Configuration::SaveAutoFixService.new(project, auto_fix_params[:feature])
-
-        return respond_422 unless service.execute(enabled: auto_fix_params[:enabled])
-
-        render status: :ok, json: auto_fix_settings
-      end
-
-      private
-
-      def auto_fix_authorized?
-        can?(current_user, :modify_auto_fix_setting, project)
-      end
-
-      def auto_fix_params
-        return @auto_fix_params if @auto_fix_params
-
-        @auto_fix_params = params.permit(:feature, :enabled)
-
-        feature = @auto_fix_params[:feature]
-        @auto_fix_params[:feature] = feature.blank? ? 'all' : feature.to_s
-
-        @auto_fix_params
-      end
-
-      def check_auto_fix_permissions!
-        render_403 unless auto_fix_authorized?
-      end
-
-      def check_feature_flag!
-        render_404 if Feature.disabled?(:security_auto_fix, project)
-      end
-
-      def auto_fix_settings
-        setting = project.security_setting
-
-        {
-          dependency_scanning: setting.auto_fix_dependency_scanning,
-          container_scanning: setting.auto_fix_container_scanning
-        }
-      end
-    end
-  end
-end

ee/app/helpers/ee/projects_helper.rb

@@ -27,8 +27,6 @@ module EE
     def get_project_nav_tabs(project, current_user)
       nav_tabs = super
 
-      nav_tabs += get_project_security_nav_tabs(project, current_user)
-
       if can?(current_user, :read_code_review_analytics, project)
         nav_tabs << :code_review
       end
@@ -160,9 +158,9 @@ module EE
       @project.feature_available?(:merge_trains)
     end
 
+    override :sidebar_security_paths
     def sidebar_security_paths
-      %w[
-        projects/security/configuration#show
+      super + %w[
         projects/security/sast_configuration#show
         projects/security/api_fuzzing_configuration#show
         projects/security/vulnerabilities#show
@@ -199,9 +197,9 @@ module EE
       ]
     end
 
+    override :sidebar_security_configuration_paths
     def sidebar_security_configuration_paths
-      %w[
-        projects/security/configuration#show
+      super + %w[
         projects/security/sast_configuration#show
         projects/security/api_fuzzing_configuration#show
         projects/security/dast_profiles#show
@@ -324,14 +322,20 @@ module EE
 
     private
 
+    override :can_read_security_configuration?
+    def can_read_security_configuration?(project, current_user)
+      super || (project.feature_available?(:security_dashboard) &&
+        can?(current_user, :read_project_security_dashboard, project))
+    end
+
+    override :get_project_security_nav_tabs
     def get_project_security_nav_tabs(project, current_user)
       return [] unless can?(current_user, :access_security_and_compliance, project)
 
-      nav_tabs = [:security_and_compliance]
+      nav_tabs = super.union([:security_and_compliance])
 
       if can?(current_user, :read_project_security_dashboard, project)
         nav_tabs << :security
-        nav_tabs << :security_configuration
       end
 
       if can?(current_user, :read_on_demand_scans, @project)

ee/app/views/layouts/nav/sidebar/_project_security_link.html.haml

 - on_demand_scans_path = Feature.enabled?(:dast_saved_scans, @project, default_enabled: :yaml) ? new_project_on_demand_scan_path(@project) : project_on_demand_scans_path(@project)
 
-- if any_project_nav_tab?([:security, :dependencies, :licenses, :audit_events])
+- if any_project_nav_tab?([:security, :security_configuration, :dependencies, :licenses, :audit_events])
   = nav_link(path: sidebar_security_paths) do
     = link_to top_level_link(@project), data: { qa_selector: top_level_qa_selector(@project) } do
       .nav-icon-container

ee/app/views/projects/security/configuration/show.html.haml

 - breadcrumb_title _("Security Configuration")
 - page_title _("Security Configuration")
 
-#js-security-configuration{ data: { **@configuration.to_html_data_attribute,
+- if @configuration.nil?
+  = render_ce 'projects/security/configuration/show'
+- else
+  #js-security-configuration{ data: { **@configuration.to_html_data_attribute,
     auto_fix_help_path: '/',
     toggle_autofix_setting_endpoint: 'configuration/auto_fix',
     container_scanning_help_path: help_page_path('user/application_security/container_scanning/index'),

ee/config/routes/project.rb

@@ -63,7 +63,7 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
           resources :dashboard, only: [:index], controller: :dashboard
           resources :vulnerability_report, only: [:index], controller: :vulnerability_report
 
-          resource :configuration, only: [:show], controller: :configuration do
+          resource :configuration, only: [], controller: :configuration do
             post :auto_fix, on: :collection
             resource :corpus_management, only: [:show], controller: :corpus_management
             resource :sast, only: [:show, :create], controller: :sast_configuration

ee/spec/controllers/projects/security/configuration_controller_spec.rb

@@ -7,19 +7,60 @@ RSpec.describe Projects::Security::ConfigurationController do
   let(:project) { create(:project, :repository, namespace: group) }
 
   describe 'GET #show' do
-    subject(:request) { get :show, params: { namespace_id: project.namespace, project_id: project } }
+    using RSpec::Parameterized::TableSyntax
 
-    it_behaves_like SecurityDashboardsPermissions do
-      let(:vulnerable) { project }
-      let(:security_dashboard_action) { request }
-    end
+    subject(:request) { get :show, params: { namespace_id: project.namespace, project_id: project } }
 
-    context 'with user' do
     let(:user) { create(:user) }
 
     render_views
 
+    where(:user_role, :security_dashboard_enabled, :ce_flag_enabled, :status, :selector) do
+      :guest     | false | false | :not_found | nil
+      :guest     | false | true  | :forbidden | nil
+      :guest     | true  | false | :not_found | nil
+      :guest     | true  | true  | :forbidden | nil
+      :developer | false | false | :not_found | nil
+      :developer | false | true  | :ok        | '#js-security-configuration-static'
+      :developer | true  | false | :ok        | '#js-security-configuration'
+      :developer | true  | true  | :ok        | '#js-security-configuration'
+    end
+
+    with_them do
       before do
+        stub_licensed_features(security_dashboard: security_dashboard_enabled)
+        stub_feature_flags(secure_security_and_compliance_configuration_page_on_ce: ce_flag_enabled)
+        group.send("add_#{user_role}", user)
+        sign_in(user)
+      end
+
+      it 'responds with the correct status' do
+        request
+
+        expect(response).to have_gitlab_http_status(status)
+
+        unless selector.nil?
+          expect(response).to render_template(:show)
+          expect(response.body).to have_css(selector)
+        end
+      end
+    end
+
+    context 'with developer and security dashboard feature enabled' do
+      let(:flag) { :secure_security_and_compliance_configuration_page_on_ce }
+
+      # The tests in this context should be unaffected by this feature flag,
+      # and should behave identically whether this is enabled or disabled.
+      where(:flag_enabled) do
+        [
+          [true],
+          [false]
+        ]
+      end
+
+      with_them do
+        before do
+          stub_feature_flags(flag => flag_enabled)
           stub_licensed_features(security_dashboard: true)
 
           group.add_developer(user)
@@ -75,6 +116,7 @@ RSpec.describe Projects::Security::ConfigurationController do
         end
       end
     end
+  end
 
   describe 'POST #auto_fix' do
     subject(:request) { post :auto_fix, params: params }

ee/spec/helpers/projects_helper_spec.rb

@@ -302,7 +302,8 @@ RSpec.describe ProjectsHelper do
 
     describe 'Security & Compliance tabs' do
       where(:ability, :nav_tabs) do
-        :read_project_security_dashboard          | [:security, :security_configuration]
+        :read_project_security_dashboard          | [:security]
+        :read_security_configuration              | [:security_configuration]
         :read_on_demand_scans                     | [:on_demand_scans]
         :read_dependencies                        | [:dependencies]
         :read_licenses                            | [:licenses]

ee/spec/routing/projects/security/configuration_controller_routing_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Projects::Security::ConfigurationController, 'routing' do
+  let(:base_params) { { namespace_id: 'gitlab', project_id: 'gitlabhq' } }
+
+  before do
+    allow(Project).to receive(:find_by_full_path).with('gitlab/gitlabhq', any_args).and_return(true)
+  end
+
+  it 'to #show' do
+    expect(get('/gitlab/gitlabhq/-/security/configuration')).to route_to('projects/security/configuration#show', namespace_id: 'gitlab', project_id: 'gitlabhq')
+  end
+
+  it 'to #auto_fix' do
+    expect(post('/gitlab/gitlabhq/-/security/configuration/auto_fix')).to route_to('projects/security/configuration#auto_fix', namespace_id: 'gitlab', project_id: 'gitlabhq')
+  end
+end

ee/spec/views/layouts/nav/sidebar/_project.html.haml_spec.rb

@@ -93,6 +93,7 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
       allow(view).to receive(:can?).with(nil, :read_dependencies, project).and_return(can_read_dependencies)
       allow(view).to receive(:can?).with(nil, :read_project_security_dashboard, project).and_return(can_read_dashboard)
       allow(view).to receive(:can?).with(nil, :read_project_audit_events, project).and_return(can_read_project_audit_events)
+      allow(view).to receive(:can?).with(nil, :read_security_configuration, project).and_return(can_read_security_configuration)
       allow(view).to receive(:can?).with(nil, :access_security_and_compliance, project).and_return(can_access_security_and_compliance)
 
       render
@@ -105,24 +106,25 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
         let(:can_read_dashboard) { true }
         let(:can_read_dependencies) { true }
         let(:can_read_project_audit_events) { true }
+        let(:can_read_security_configuration) { true }
 
-        it 'top level navigation link is visible' do
+        it 'top level navigation link is not visible' do
           expect(rendered).not_to have_link('Security & Compliance', href: project_security_dashboard_index_path(project))
         end
 
-        it 'security dashboard link is visible' do
+        it 'security dashboard link is not visible' do
           expect(rendered).not_to have_link('Security Dashboard', href: project_security_dashboard_index_path(project))
         end
 
-        it 'security configuration link is visible' do
+        it 'security configuration link is not visible' do
           expect(rendered).not_to have_link('Configuration', href: project_security_configuration_path(project))
         end
 
-        it 'dependency list link is visible' do
+        it 'dependency list link is not visible' do
           expect(rendered).not_to have_link('Dependency List', href: project_dependencies_path(project))
         end
 
-        it 'audit events link is visible' do
+        it 'audit events link is not visible' do
           expect(rendered).not_to have_link('Audit Events', href: project_audit_events_path(project))
         end
       end
@@ -135,6 +137,7 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
         let(:can_read_dashboard) { true }
         let(:can_read_dependencies) { true }
         let(:can_read_project_audit_events) { true }
+        let(:can_read_security_configuration) { true }
 
         it 'top level navigation link is visible' do
           expect(rendered).to have_link('Security & Compliance', href: project_security_dashboard_index_path(project))
@@ -161,6 +164,7 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
         let(:can_read_dashboard) { true }
         let(:can_read_dependencies) { false }
         let(:can_read_project_audit_events) { false }
+        let(:can_read_security_configuration) { true }
 
         it 'top level navigation link is visible' do
           expect(rendered).to have_link('Security & Compliance', href: project_security_dashboard_index_path(project))
@@ -187,6 +191,7 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
         let(:can_read_dashboard) { false }
         let(:can_read_dependencies) { true }
         let(:can_read_project_audit_events) { false }
+        let(:can_read_security_configuration) { false }
 
         it 'top level navigation link is visible' do
           expect(rendered).to have_link('Security & Compliance', href: project_dependencies_path(project))
@@ -213,6 +218,7 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
         let(:can_read_dashboard) { false }
         let(:can_read_dependencies) { false }
         let(:can_read_project_audit_events) { true }
+        let(:can_read_security_configuration) { false }
 
         it 'top level navigation link is visible' do
           expect(rendered).to have_link('Security & Compliance', href: project_audit_events_path(project))
@@ -239,6 +245,7 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
         let(:can_read_dependencies) { false }
         let(:can_read_dashboard) { false }
         let(:can_read_project_audit_events) { false }
+        let(:can_read_security_configuration) { false }
 
         it 'top level navigation link is visible' do
           expect(rendered).not_to have_link('Security & Compliance', href: project_security_dashboard_index_path(project))

spec/controllers/projects/security/configuration_controller_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Projects::Security::ConfigurationController do
+  let(:project) { create(:project, :public) }
+  let(:user) { create(:user) }
+
+  before do
+    sign_in(user)
+  end
+
+  describe 'GET show' do
+    context 'when feature flag is disabled' do
+      before do
+        stub_feature_flags(secure_security_and_compliance_configuration_page_on_ce: false)
+      end
+
+      it 'renders not found' do
+        get :show, params: { namespace_id: project.namespace, project_id: project }
+
+        expect(response).to have_gitlab_http_status(:not_found)
+      end
+    end
+
+    context 'when feature flag is enabled' do
+      context 'when user has guest access' do
+        before do
+          project.add_guest(user)
+        end
+
+        it 'denies access' do
+          get :show, params: { namespace_id: project.namespace, project_id: project }
+
+          expect(response).to have_gitlab_http_status(:forbidden)
+        end
+      end
+
+      context 'when user has developer access' do
+        before do
+          project.add_developer(user)
+        end
+
+        it 'grants access' do
+          get :show, params: { namespace_id: project.namespace, project_id: project }
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(response).to render_template(:show)
+        end
+      end
+    end
+  end
+end

spec/helpers/projects_helper_spec.rb

@@ -398,6 +398,45 @@ RSpec.describe ProjectsHelper do
       helper.send(:get_project_nav_tabs, project, user)
     end
 
+    context 'Security & Compliance tabs' do
+      before do
+        stub_feature_flags(secure_security_and_compliance_configuration_page_on_ce: feature_flag_enabled)
+        allow(helper).to receive(:can?).with(user, :read_security_configuration, project).and_return(can_read_security_configuration)
+      end
+
+      context 'when user cannot read security configuration' do
+        let(:can_read_security_configuration) { false }
+
+        context 'when feature flag is disabled' do
+          let(:feature_flag_enabled) { false }
+
+          it { is_expected.not_to include(:security_configuration) }
+        end
+
+        context 'when feature flag is enabled' do
+          let(:feature_flag_enabled) { true }
+
+          it { is_expected.not_to include(:security_configuration) }
+        end
+      end
+
+      context 'when user can read security configuration' do
+        let(:can_read_security_configuration) { true }
+
+        context 'when feature flag is disabled' do
+          let(:feature_flag_enabled) { false }
+
+          it { is_expected.not_to include(:security_configuration) }
+        end
+
+        context 'when feature flag is enabled' do
+          let(:feature_flag_enabled) { true }
+
+          it { is_expected.to include(:security_configuration) }
+        end
+      end
+    end
+
     context 'when builds feature is enabled' do
       before do
         allow(project).to receive(:builds_enabled?).and_return(true)

spec/policies/project_policy_spec.rb

@@ -865,6 +865,28 @@ RSpec.describe ProjectPolicy do
     end
   end
 
+  context 'security configuration feature' do
+    %w(guest reporter).each do |role|
+      context role do
+        let(:current_user) { send(role) }
+
+        it 'prevents reading security configuration' do
+          expect_disallowed(:read_security_configuration)
+        end
+      end
+    end
+
+    %w(developer maintainer owner).each do |role|
+      context role do
+        let(:current_user) { send(role) }
+
+        it 'allows reading security configuration' do
+          expect_allowed(:read_security_configuration)
+        end
+      end
+    end
+  end
+
   describe 'design permissions' do
     let(:current_user) { guest }
 

spec/routing/projects/security/configuration_controller_routing_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Projects::Security::ConfigurationController, 'routing' do
+  let(:base_params) { { namespace_id: 'gitlab', project_id: 'gitlabhq' } }
+
+  before do
+    allow(Project).to receive(:find_by_full_path).with('gitlab/gitlabhq', any_args).and_return(true)
+  end
+
+  it 'routes to #show' do
+    expect(get('/gitlab/gitlabhq/-/security/configuration')).to route_to('projects/security/configuration#show', namespace_id: 'gitlab', project_id: 'gitlabhq')
+  end
+end

spec/support/shared_contexts/navbar_structure_context.rb

@@ -18,7 +18,8 @@ RSpec.shared_context 'project navbar structure' do
     {
       nav_item: _('Security & Compliance'),
       nav_sub_items: [
-        _('Audit Events')
+        _('Configuration'),
+        (_('Audit Events') if Gitlab.ee?)
       ]
     }
   end
@@ -71,7 +72,7 @@ RSpec.shared_context 'project navbar structure' do
           _('Schedules')
         ]
       },
-      (security_and_compliance_nav_item if Gitlab.ee?),
+      security_and_compliance_nav_item,
       {
         nav_item: _('Operations'),
         nav_sub_items: [
@@ -190,7 +191,7 @@ RSpec.shared_context 'group navbar structure' do
         nav_item: _('Merge Requests'),
         nav_sub_items: []
       },
-      (security_and_compliance_nav_item if Gitlab.ee?),
+      security_and_compliance_nav_item,
       (push_rules_nav_item if Gitlab.ee?),
       {
         nav_item: _('Kubernetes'),

spec/views/layouts/nav/sidebar/_project_security_link.html.haml_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'layouts/nav/sidebar/_project_security_link' do
+  let_it_be_with_reload(:project) { create(:project) }
+  context 'on security configuration' do
+    before do
+      assign(:project, project)
+      allow(controller).to receive(:controller_name).and_return('configuration')
+      allow(controller).to receive(:controller_path).and_return('projects/security/configuration')
+      allow(controller).to receive(:action_name).and_return('show')
+      allow(view).to receive(:any_project_nav_tab?).and_return(true)
+      allow(view).to receive(:project_nav_tab?).and_return(true)
+    end
+
+    it 'activates Security & Compliance tab' do
+      render
+
+      expect(rendered).to have_css('li.active', text: 'Security & Compliance')
+    end
+
+    it 'activates Configuration sub tab' do
+      render
+
+      expect(rendered).to have_css('.sidebar-sub-level-items > li.active', text: 'Configuration')
+    end
+  end
+end