Merge dev.gitlab.org master into GitLab.com master

CHANGELOG.md

@@ -478,6 +478,24 @@ entry.
 - Removes EE differences for environment_item.vue.
 
 
+## 11.9.12 (2019-05-30)
+
+### Security (12 changes, 1 of them is from the community)
+
+- Protect Gitlab::HTTP against DNS rebinding attack.
+- Fix project visibility level validation. (Peter Marko)
+- Update Knative version.
+- Add DNS rebinding protection settings.
+- Prevent XSS injection in note imports.
+- Prevent invalid branch for merge request.
+- Filter relative links in wiki for XSS.
+- Fix confidential issue label disclosure on milestone view.
+- Fix url redaction for issue links.
+- Resolve: Milestones leaked via search API.
+- Prevent bypass of restriction disabling web password sign in.
+- Hide confidential issue title on unsubscribe for anonymous users.
+
+
 ## 11.9.10 (2019-04-26)
 
 ### Security (5 changes)

app/controllers/concerns/import_url_params.rb

+# frozen_string_literal: true
+
+module ImportUrlParams
+  def import_url_params
+    { import_url: import_params_to_full_url(params[:project]) }
+  end
+
+  def import_params_to_full_url(params)
+    Gitlab::UrlSanitizer.new(
+      params[:import_url],
+      credentials: {
+        user: params[:import_url_user],
+        password: params[:import_url_password]
+      }
+    ).full_url
+  end
+end

app/controllers/concerns/milestone_actions.rb

@@ -26,16 +26,22 @@ module MilestoneActions
     end
   end
 
+  # rubocop:disable Gitlab/ModuleWithInstanceVariables
   def labels
     respond_to do |format|
       format.html { redirect_to milestone_redirect_path }
       format.json do
+        milestone_labels = @milestone.issue_labels_visible_by_user(current_user)
+
         render json: tabs_json("shared/milestones/_labels_tab", {
-          labels: @milestone.labels.map { |label| label.present(issuable_subject: @milestone.parent) } # rubocop:disable Gitlab/ModuleWithInstanceVariables
+          labels: milestone_labels.map do |label|
+            label.present(issuable_subject: @milestone.parent)
+          end
         })
       end
     end
   end
+  # rubocop:enable Gitlab/ModuleWithInstanceVariables
 
   private
 

app/controllers/projects/imports_controller.rb

@@ -2,6 +2,7 @@
 
 class Projects::ImportsController < Projects::ApplicationController
   include ContinueParams
+  include ImportUrlParams
 
   # Authorize
   before_action :authorize_admin_project!
@@ -67,10 +68,12 @@ class Projects::ImportsController < Projects::ApplicationController
   end
 
   def import_params_attributes
-    [:import_url]
+    []
   end
 
   def import_params
-    params.require(:project).permit(import_params_attributes)
+    params.require(:project)
+      .permit(import_params_attributes)
+      .merge(import_url_params)
   end
 end

app/controllers/projects_controller.rb

@@ -7,6 +7,7 @@ class ProjectsController < Projects::ApplicationController
   include PreviewMarkdown
   include SendFileUpload
   include RecordUserLastActivity
+  include ImportUrlParams
 
   prepend_before_action(only: [:show]) { authenticate_sessionless_user!(:rss) }
 
@@ -333,6 +334,7 @@ class ProjectsController < Projects::ApplicationController
   def project_params(attributes: [])
     params.require(:project)
       .permit(project_params_attributes + attributes)
+      .merge(import_url_params)
   end
 
   def project_params_attributes

app/controllers/sessions_controller.rb

@@ -18,6 +18,7 @@ class SessionsController < Devise::SessionsController
   prepend_before_action :store_redirect_uri, only: [:new]
   prepend_before_action :ldap_servers, only: [:new, :create]
   prepend_before_action :require_no_authentication_without_flash, only: [:new, :create]
+  prepend_before_action :ensure_password_authentication_enabled!, if: :password_based_login?, only: [:create]
 
   before_action :auto_sign_in_with_provider, only: [:new]
   before_action :load_recaptcha
@@ -138,6 +139,14 @@ class SessionsController < Devise::SessionsController
   end
   # rubocop: enable CodeReuse/ActiveRecord
 
+  def ensure_password_authentication_enabled!
+    render_403 unless Gitlab::CurrentSettings.password_authentication_enabled_for_web?
+  end
+
+  def password_based_login?
+    user_params[:login].present? || user_params[:password].present?
+  end
+
   def user_params
     params.require(:user).permit(:login, :password, :remember_me, :otp_attempt, :device_response)
   end

app/helpers/application_settings_helper.rb

@@ -160,6 +160,7 @@ module ApplicationSettingsHelper
       :akismet_api_key,
       :akismet_enabled,
       :allow_local_requests_from_hooks_and_services,
+      :dns_rebinding_protection_enabled,
       :archive_builds_in_human_readable,
       :authorized_keys_enabled,
       :auto_devops_enabled,

app/helpers/notifications_helper.rb

@@ -100,4 +100,8 @@ module NotificationsHelper
       css_class: "icon notifications-icon js-notifications-icon"
     )
   end
+
+  def show_unsubscribe_title?(noteable)
+    can?(current_user, "read_#{noteable.to_ability_name}".to_sym, noteable)
+  end
 end

app/models/application_setting_implementation.rb

@@ -21,6 +21,7 @@ module ApplicationSettingImplementation
         after_sign_up_text: nil,
         akismet_enabled: false,
         allow_local_requests_from_hooks_and_services: false,
+        dns_rebinding_protection_enabled: true,
         authorized_keys_enabled: true, # TODO default to false if the instance is configured to use AuthorizedKeysCommand
         container_registry_token_expire_delay: 5,
         default_artifacts_expire_in: '30 days',

app/models/merge_request.rb

@@ -589,6 +589,8 @@ class MergeRequest < ApplicationRecord
       return
     end
 
+    [:source_branch, :target_branch].each { |attr| validate_branch_name(attr) }
+
     if opened?
       similar_mrs = target_project
         .merge_requests
@@ -609,6 +611,16 @@ class MergeRequest < ApplicationRecord
     end
   end
 
+  def validate_branch_name(attr)
+    return unless changes_include?(attr)
+
+    branch = read_attribute(attr)
+
+    return unless branch
+
+    errors.add(attr) unless Gitlab::GitRefValidator.validate_merge_request_branch(branch)
+  end
+
   def validate_target_project
     return true if target_project.merge_requests_enabled?
 

app/models/project.rb

@@ -407,6 +407,7 @@ class Project < ApplicationRecord
   scope :with_builds_enabled, -> { with_feature_enabled(:builds) }
   scope :with_issues_enabled, -> { with_feature_enabled(:issues) }
   scope :with_issues_available_for_user, ->(current_user) { with_feature_available_for_user(:issues, current_user) }
+  scope :with_merge_requests_available_for_user, ->(current_user) { with_feature_available_for_user(:merge_requests, current_user) }
   scope :with_merge_requests_enabled, -> { with_feature_enabled(:merge_requests) }
   scope :with_remote_mirrors, -> { joins(:remote_mirrors).where(remote_mirrors: { enabled: true }).distinct }
 
@@ -597,6 +598,17 @@ class Project < ApplicationRecord
     def group_ids
       joins(:namespace).where(namespaces: { type: 'Group' }).select(:namespace_id)
     end
+
+    # Returns ids of projects with milestones available for given user
+    #
+    # Used on queries to find milestones which user can see
+    # For example: Milestone.where(project_id: ids_with_milestone_available_for(user))
+    def ids_with_milestone_available_for(user)
+      with_issues_enabled = with_issues_available_for_user(user).select(:id)
+      with_merge_requests_enabled = with_merge_requests_available_for_user(user).select(:id)
+
+      from_union([with_issues_enabled, with_merge_requests_enabled]).select(:id)
+    end
   end
 
   def all_pipelines

app/views/admin/application_settings/_outbound.html.haml

@@ -8,4 +8,12 @@
         = f.label :allow_local_requests_from_hooks_and_services, class: 'form-check-label' do
           Allow requests to the local network from hooks and services
 
+    .form-group
+      .form-check
+        = f.check_box :dns_rebinding_protection_enabled, class: 'form-check-input'
+        = f.label :dns_rebinding_protection_enabled, class: 'form-check-label' do
+          = _('Enforce DNS rebinding attack protection')
+        %span.form-text.text-muted
+          = _('Resolves IP addresses once and uses them to submit requests')
+
   = f.submit 'Save changes', class: "btn btn-success"

app/views/sent_notifications/unsubscribe.html.haml

 - noteable = @sent_notification.noteable
 - noteable_type = @sent_notification.noteable_type.titleize.downcase
-- noteable_text = %(#{noteable.title} (#{noteable.to_reference}))
+- noteable_text = show_unsubscribe_title?(noteable) ? %(#{noteable.title} (#{noteable.to_reference})) : %(#{noteable.to_reference})
 - page_title _("Unsubscribe"), noteable_text, noteable_type.pluralize, @sent_notification.project.full_name
 
 %h3.page-title

app/views/shared/_import_form.html.haml

 - ci_cd_only = local_assigns.fetch(:ci_cd_only, false)
+- import_url = Gitlab::UrlSanitizer.new(f.object.import_url)
 
-.form-group.import-url-data
-  = f.label :import_url, class: 'label-bold' do
-    %span
-      = _('Git repository URL')
+.import-url-data
+  .form-group
+    = f.label :import_url, class: 'label-bold' do
+      %span
+        = _('Git repository URL')
+    = f.text_field :import_url, value: import_url.sanitized_url,
+        autocomplete: 'off', class: 'form-control', placeholder: 'https://gitlab.company.com/group/project.git', required: true
 
-  = f.text_field :import_url, autocomplete: 'off', class: 'form-control', placeholder: 'https://username:password@gitlab.company.com/group/project.git', required: true
+  .row
+    .form-group.col-md-6
+      = f.label :import_url_user, class: 'label-bold' do
+        %span
+          = _('Username (optional)')
+      = f.text_field :import_url_user, value: import_url.user, class: 'form-control', required: false, autocomplete: 'new-password'
+
+    .form-group.col-md-6
+      = f.label :import_url_password, class: 'label-bold' do
+        %span
+          = _('Password (optional)')
+      = f.password_field :import_url_password, class: 'form-control', required: false, autocomplete: 'new-password'
 
   .info-well.prepend-top-20
     .well-segment
@@ -13,7 +28,7 @@
         %li
           = _('The repository must be accessible over <code>http://</code>, <code>https://</code> or <code>git://</code>.').html_safe
         %li
-          = _('If your HTTP repository is not publicly accessible, add authentication information to the URL: <code>https://username:password@gitlab.company.com/group/project.git</code>.').html_safe
+          = _('If your HTTP repository is not publicly accessible, add your credentials.')
         %li
           = import_will_timeout_message(ci_cd_only)
         %li

changelogs/unreleased/dm-http-hostname-override.yml

+---
+title: Protect Gitlab::HTTP against DNS rebinding attack
+merge_request:
+author:
+type: security

changelogs/unreleased/security-60039.yml

+---
+title: Prevent invalid branch for merge request
+merge_request:
+author:
+type: security

changelogs/unreleased/security-fix-confidential-issue-label-visibility-master.yml

+---
+title: Fix confidential issue label disclosure on milestone view
+merge_request:
+author:
+type: security

changelogs/unreleased/security-fix-project-existence-disclosure-master.yml

+---
+title: Fix url redaction for issue links
+merge_request:
+author:
+type: security

changelogs/unreleased/security-fix_milestones_search_api_leak.yml

+---
+title: 'Resolve: Milestones leaked via search API'
+merge_request:
+author:
+type: security

changelogs/unreleased/security-id-leaked-password-in-import-url-frontend.yml

+---
+title: Add extra fields for handling basic auth on import by url page
+merge_request:
+author:
+type: security

changelogs/unreleased/security-jej-prevent-web-sign-in-bypass.yml

+---
+title: Prevent bypass of restriction disabling web password sign in
+merge_request:
+author:
+type: security

changelogs/unreleased/security-unsubscribing-from-issue.yml

+---
+title: Hide confidential issue title on unsubscribe for anonymous users
+merge_request:
+author:
+type: security

config/initializers/hipchat_client_patch.rb

@@ -2,14 +2,14 @@
 # This monkey patches the HTTParty used in https://github.com/hipchat/hipchat-rb.
 module HipChat
   class Client
-    connection_adapter ::Gitlab::ProxyHTTPConnectionAdapter
+    connection_adapter ::Gitlab::HTTPConnectionAdapter
   end
 
   class Room
-    connection_adapter ::Gitlab::ProxyHTTPConnectionAdapter
+    connection_adapter ::Gitlab::HTTPConnectionAdapter
   end
 
   class User
-    connection_adapter ::Gitlab::ProxyHTTPConnectionAdapter
+    connection_adapter ::Gitlab::HTTPConnectionAdapter
   end
 end

config/initializers/http_hostname_override.rb

+# This override allows passing `@hostname_override` to the SNI protocol,
+# which is used to lookup the correct SSL certificate in the
+# request handshake process.
+#
+# Given we've forced the HTTP request to be sent to the resolved
+# IP address in a few scenarios (e.g.: `Gitlab::HTTP` through
+# `Gitlab::UrlBlocker.validate!`), we need to provide the _original_
+# hostname via SNI in order to have a clean connection setup.
+#
+# This is ultimately needed in order to avoid DNS rebinding attacks
+# through HTTP requests.
+#
+class OpenSSL::SSL::SSLContext
+  attr_accessor :hostname_override
+end
+
+class OpenSSL::SSL::SSLSocket
+  module HostnameOverride
+    # rubocop: disable Gitlab/ModuleWithInstanceVariables
+    def hostname=(hostname)
+      super(@context.hostname_override || hostname)
+    end
+
+    def post_connection_check(hostname)
+      super(@context.hostname_override || hostname)
+    end
+    # rubocop: enable Gitlab/ModuleWithInstanceVariables
+  end
+
+  prepend HostnameOverride
+end
+
+class Net::HTTP
+  attr_accessor :hostname_override
+  SSL_IVNAMES << :@hostname_override
+  SSL_ATTRIBUTES << :hostname_override
+
+  module HostnameOverride
+    def addr_port
+      return super unless hostname_override
+
+      addr = hostname_override
+      default_port = use_ssl? ? Net::HTTP.https_default_port : Net::HTTP.http_default_port
+      default_port == port ? addr : "#{addr}:#{port}"
+    end
+  end
+
+  prepend HostnameOverride
+end

db/migrate/20190529142545_add_dns_rebinding_protection_enabled_to_application_settings.rb

+# frozen_string_literal: true
+
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddDnsRebindingProtectionEnabledToApplicationSettings < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_column_with_default(:application_settings, :dns_rebinding_protection_enabled,
+                            :boolean,
+                            default: true,
+                            allow_null: false)
+  end
+
+  def down
+    remove_column(:application_settings, :dns_rebinding_protection_enabled)
+  end
+end

db/schema.rb

@@ -193,6 +193,7 @@ ActiveRecord::Schema.define(version: 20190530154715) do
     t.integer "elasticsearch_replicas", default: 1, null: false
     t.text "encrypted_lets_encrypt_private_key"
     t.text "encrypted_lets_encrypt_private_key_iv"
+    t.boolean "dns_rebinding_protection_enabled", default: true, null: false
     t.index ["usage_stats_set_by_user_id"], name: "index_application_settings_on_usage_stats_set_by_user_id", using: :btree
   end
 

lib/banzai/redactor.rb

@@ -70,8 +70,11 @@ module Banzai
       # Build the raw <a> tag just with a link as href and content if
       # it's originally a link pattern. We shouldn't return a plain text href.
       original_link =
-        if link_reference == 'true' && href = original_content
-          %(<a href="#{href}">#{href}</a>)
+        if link_reference == 'true'
+          href = node.attr('href')
+          content = original_content
+
+          %(<a href="#{href}">#{content}</a>)
         end
 
       # The reference should be replaced by the original link's content,

lib/gitlab.rb

@@ -40,6 +40,7 @@ module Gitlab
   SUBDOMAIN_REGEX = %r{\Ahttps://[a-z0-9]+\.gitlab\.com\z}.freeze
   VERSION = File.read(root.join("VERSION")).strip.freeze
   INSTALLATION_TYPE = File.read(root.join("INSTALLATION_TYPE")).strip.freeze
+  HTTP_PROXY_ENV_VARS = %w(http_proxy https_proxy HTTP_PROXY HTTPS_PROXY).freeze
 
   def self.com?
     # Check `gl_subdomain?` as well to keep parity with gitlab.com
@@ -66,6 +67,10 @@ module Gitlab
     end
   end
 
+  def self.http_proxy_env?
+    HTTP_PROXY_ENV_VARS.any? { |name| ENV[name] }
+  end
+
   def self.process_name
     return 'sidekiq' if Sidekiq.server?
     return 'console' if defined?(Rails::Console)

lib/gitlab/git_ref_validator.rb

@@ -5,12 +5,15 @@
 module Gitlab
   module GitRefValidator
     extend self
+
+    EXPANDED_PREFIXES = %w[refs/heads/ refs/remotes/].freeze
+    DISALLOWED_PREFIXES = %w[-].freeze
+
     # Validates a given name against the git reference specification
     #
     # Returns true for a valid reference name, false otherwise
     def validate(ref_name)
-      not_allowed_prefixes = %w(refs/heads/ refs/remotes/ -)
-      return false if ref_name.start_with?(*not_allowed_prefixes)
+      return false if ref_name.start_with?(*(EXPANDED_PREFIXES + DISALLOWED_PREFIXES))
       return false if ref_name == 'HEAD'
 
       begin
@@ -19,5 +22,21 @@ module Gitlab
         return false
       end
     end
+
+    def validate_merge_request_branch(ref_name)
+      return false if ref_name.start_with?(*DISALLOWED_PREFIXES)
+
+      expanded_name = if ref_name.start_with?(*EXPANDED_PREFIXES)
+                        ref_name
+                      else
+                        "refs/heads/#{ref_name}"
+                      end
+
+      begin
+        Rugged::Reference.valid_name?(expanded_name)
+      rescue ArgumentError
+        return false
+      end
+    end
   end
 end

lib/gitlab/http.rb

@@ -18,7 +18,7 @@ module Gitlab
 
     include HTTParty # rubocop:disable Gitlab/HTTParty
 
-    connection_adapter ProxyHTTPConnectionAdapter
+    connection_adapter HTTPConnectionAdapter
 
     def self.perform_request(http_method, path, options, &block)
       super

lib/gitlab/proxy_http_connection_adapter.rb → lib/gitlab/http_connection_adapter.rb

@@ -10,17 +10,19 @@
 #
 # This option will take precedence over the global setting.
 module Gitlab
-  class ProxyHTTPConnectionAdapter < HTTParty::ConnectionAdapter
+  class HTTPConnectionAdapter < HTTParty::ConnectionAdapter
     def connection
-      unless allow_local_requests?
-        begin
-          Gitlab::UrlBlocker.validate!(uri, allow_local_network: false)
-        rescue Gitlab::UrlBlocker::BlockedUrlError => e
-          raise Gitlab::HTTP::BlockedUrlError, "URL '#{uri}' is blocked: #{e.message}"
-        end
+      begin
+        @uri, hostname = Gitlab::UrlBlocker.validate!(uri, allow_local_network: allow_local_requests?,
+                                                           allow_localhost: allow_local_requests?,
+                                                           dns_rebind_protection: dns_rebind_protection?)
+      rescue Gitlab::UrlBlocker::BlockedUrlError => e
+        raise Gitlab::HTTP::BlockedUrlError, "URL '#{uri}' is blocked: #{e.message}"
       end
 
-      super
+      super.tap do |http|
+        http.hostname_override = hostname if hostname
+      end
     end
 
     private
@@ -29,6 +31,12 @@ module Gitlab
       options.fetch(:allow_local_requests, allow_settings_local_requests?)
     end
 
+    def dns_rebind_protection?
+      return false if Gitlab.http_proxy_env?
+
+      Gitlab::CurrentSettings.dns_rebinding_protection_enabled?
+    end
+
     def allow_settings_local_requests?
       Gitlab::CurrentSettings.allow_local_requests_from_hooks_and_services?
     end

lib/gitlab/project_search_results.rb

@@ -138,6 +138,12 @@ module Gitlab
       project
     end
 
+    def filter_milestones_by_project(milestones)
+      return Milestone.none unless Ability.allowed?(@current_user, :read_milestone, @project)
+
+      milestones.where(project_id: project.id) # rubocop: disable CodeReuse/ActiveRecord
+    end
+
     def repository_project_ref
       @repository_project_ref ||= repository_ref || project.default_branch
     end

lib/gitlab/search_results.rb

@@ -103,9 +103,11 @@ module Gitlab
 
     # rubocop: disable CodeReuse/ActiveRecord
     def milestones
-      milestones = Milestone.where(project_id: project_ids_relation)
-      milestones = milestones.search(query)
-      milestones.reorder('milestones.updated_at DESC')
+      milestones = Milestone.search(query)
+
+      milestones = filter_milestones_by_project(milestones)
+
+      milestones.reorder('updated_at DESC')
     end
     # rubocop: enable CodeReuse/ActiveRecord
 
@@ -123,6 +125,26 @@ module Gitlab
       'projects'
     end
 
+    # Filter milestones by authorized projects.
+    # For performance reasons project_id is being plucked
+    # to be used on a smaller query.
+    #
+    # rubocop: disable CodeReuse/ActiveRecord
+    def filter_milestones_by_project(milestones)
+      project_ids =
+        milestones.where(project_id: project_ids_relation)
+          .select(:project_id).distinct
+          .pluck(:project_id)
+
+      return Milestone.none if project_ids.nil?
+
+      authorized_project_ids_relation =
+        Project.where(id: project_ids).ids_with_milestone_available_for(current_user)
+
+      milestones.where(project_id: authorized_project_ids_relation)
+    end
+    # rubocop: enable CodeReuse/ActiveRecord
+
     # rubocop: disable CodeReuse/ActiveRecord
     def project_ids_relation
       limit_projects.select(:id).reorder(nil)

lib/gitlab/url_blocker.rb

@@ -8,38 +8,68 @@ module Gitlab
     BlockedUrlError = Class.new(StandardError)
 
     class << self
-      def validate!(url, ports: [], schemes: [], allow_localhost: false, allow_local_network: true, ascii_only: false, enforce_user: false, enforce_sanitization: false)
-        return true if url.nil?
+      # Validates the given url according to the constraints specified by arguments.
+      #
+      # ports - Raises error if the given URL port does is not between given ports.
+      # allow_localhost - Raises error if URL resolves to a localhost IP address and argument is true.
+      # allow_local_network - Raises error if URL resolves to a link-local address and argument is true.
+      # ascii_only - Raises error if URL has unicode characters and argument is true.
+      # enforce_user - Raises error if URL user doesn't start with alphanumeric characters and argument is true.
+      # enforce_sanitization - Raises error if URL includes any HTML/CSS/JS tags and argument is true.
+      #
+      # Returns an array with [<uri>, <original-hostname>].
+      # rubocop:disable Metrics/CyclomaticComplexity
+      # rubocop:disable Metrics/ParameterLists
+      def validate!(
+        url,
+        ports: [],
+        schemes: [],
+        allow_localhost: false,
+        allow_local_network: true,
+        ascii_only: false,
+        enforce_user: false,
+        enforce_sanitization: false,
+        dns_rebind_protection: true)
+        # rubocop:enable Metrics/CyclomaticComplexity
+        # rubocop:enable Metrics/ParameterLists
+
+        return [nil, nil] if url.nil?
 
         # Param url can be a string, URI or Addressable::URI
         uri = parse_url(url)
 
         validate_html_tags!(uri) if enforce_sanitization
 
-        # Allow imports from the GitLab instance itself but only from the configured ports
-        return true if internal?(uri)
-
+        hostname = uri.hostname
         port = get_port(uri)
-        validate_scheme!(uri.scheme, schemes)
-        validate_port!(port, ports) if ports.any?
-        validate_user!(uri.user) if enforce_user
-        validate_hostname!(uri.hostname)
-        validate_unicode_restriction!(uri) if ascii_only
+
+        unless internal?(uri)
+          validate_scheme!(uri.scheme, schemes)
+          validate_port!(port, ports) if ports.any?
+          validate_user!(uri.user) if enforce_user
+          validate_hostname!(hostname)
+          validate_unicode_restriction!(uri) if ascii_only
+        end
 
         begin
-          addrs_info = Addrinfo.getaddrinfo(uri.hostname, port, nil, :STREAM).map do |addr|
+          addrs_info = Addrinfo.getaddrinfo(hostname, port, nil, :STREAM).map do |addr|
             addr.ipv6_v4mapped? ? addr.ipv6_to_ipv4 : addr
           end
         rescue SocketError
-          return true
+          return [uri, nil]
         end
 
+        protected_uri_with_hostname = enforce_uri_hostname(addrs_info, uri, hostname, dns_rebind_protection)
+
+        # Allow url from the GitLab instance itself but only for the configured hostname and ports
+        return protected_uri_with_hostname if internal?(uri)
+
         validate_localhost!(addrs_info) unless allow_localhost
         validate_loopback!(addrs_info) unless allow_localhost
         validate_local_network!(addrs_info) unless allow_local_network
         validate_link_local!(addrs_info) unless allow_local_network
 
-        true
+        protected_uri_with_hostname
       end
 
       def blocked_url?(*args)
@@ -52,6 +82,25 @@ module Gitlab
 
       private
 
+      # Returns the given URI with IP address as hostname and the original hostname respectively
+      # in an Array.
+      #
+      # It checks whether the resolved IP address matches with the hostname. If not, it changes
+      # the hostname to the resolved IP address.
+      #
+      # The original hostname is used to validate the SSL, given in that scenario
+      # we'll be making the request to the IP address, instead of using the hostname.
+      def enforce_uri_hostname(addrs_info, uri, hostname, dns_rebind_protection)
+        address = addrs_info.first
+        ip_address = address&.ip_address
+
+        return [uri, nil] unless dns_rebind_protection && ip_address && ip_address != hostname
+
+        uri = uri.dup
+        uri.hostname = ip_address
+        [uri, hostname]
+      end
+
       def get_port(uri)
         uri.port || uri.default_port
       end

lib/gitlab/url_sanitizer.rb

@@ -47,6 +47,10 @@ module Gitlab
       @credentials ||= { user: @url.user.presence, password: @url.password.presence }
     end
 
+    def user
+      credentials[:user]
+    end
+
     def full_url
       @full_url ||= generate_full_url.to_s
     end

locale/gitlab.pot

@@ -3850,6 +3850,9 @@ msgstr ""
 msgid "Ends at (UTC)"
 msgstr ""
 
+msgid "Enforce DNS rebinding attack protection"
+msgstr ""
+
 msgid "Enter at least three characters to search"
 msgstr ""
 
@@ -5147,7 +5150,7 @@ msgstr ""
 msgid "If you lose your recovery codes you can generate new ones, invalidating all previous codes."
 msgstr ""
 
-msgid "If your HTTP repository is not publicly accessible, add authentication information to the URL: <code>https://username:password@gitlab.company.com/group/project.git</code>."
+msgid "If your HTTP repository is not publicly accessible, add your credentials."
 msgstr ""
 
 msgid "ImageDiffViewer|2-up"
@@ -6925,6 +6928,9 @@ msgstr ""
 msgid "Password"
 msgstr ""
 
+msgid "Password (optional)"
+msgstr ""
+
 msgid "Password authentication is unavailable."
 msgstr ""
 
@@ -8472,6 +8478,9 @@ msgstr ""
 msgid "Resolved by %{resolvedByName}"
 msgstr ""
 
+msgid "Resolves IP addresses once and uses them to submit requests"
+msgstr ""
+
 msgid "Response metrics (AWS ELB)"
 msgstr ""
 
@@ -11152,6 +11161,9 @@ msgstr ""
 msgid "UserProfile|Your projects can be available publicly, internally, or privately, at your choice."
 msgstr ""
 
+msgid "Username (optional)"
+msgstr ""
+
 msgid "Username is already taken."
 msgstr ""
 

spec/controllers/concerns/import_url_params_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ImportUrlParams do
+  let(:import_url_params) do
+    controller = OpenStruct.new(params: params).extend(described_class)
+    controller.import_url_params
+  end
+
+  context 'url and password separately provided' do
+    let(:params) do
+      ActionController::Parameters.new(project: {
+        import_url: 'https://url.com',
+        import_url_user: 'user', import_url_password: 'password'
+      })
+    end
+
+    describe '#import_url_params' do
+      it 'returns hash with import_url' do
+        expect(import_url_params).to eq(
+          import_url: "https://user:password@url.com"
+        )
+      end
+    end
+  end
+
+  context 'url with provided empty credentials' do
+    let(:params) do
+      ActionController::Parameters.new(project: {
+        import_url: 'https://user:password@url.com',
+        import_url_user: '', import_url_password: ''
+      })
+    end
+
+    describe '#import_url_params' do
+      it 'does not change the url' do
+        expect(import_url_params).to eq(
+          import_url: "https://user:password@url.com"
+        )
+      end
+    end
+  end
+end

spec/controllers/projects/ci/lints_controller_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe Projects::Ci::LintsController do
+  include StubRequests
+
   let(:project) { create(:project, :repository) }
   let(:user) { create(:user) }
 
@@ -70,7 +72,7 @@ describe Projects::Ci::LintsController do
 
     context 'with a valid gitlab-ci.yml' do
       before do
-        WebMock.stub_request(:get, remote_file_path).to_return(body: remote_file_content)
+        stub_full_request(remote_file_path).to_return(body: remote_file_content)
         project.add_developer(user)
 
         post :create, params: { namespace_id: project.namespace, project_id: project, content: content }

spec/controllers/projects/imports_controller_spec.rb

@@ -122,4 +122,19 @@ describe Projects::ImportsController do
       end
     end
   end
+
+  describe 'POST #create' do
+    let(:params) { { import_url: 'https://github.com/vim/vim.git', import_url_user: 'user', import_url_password: 'password' } }
+    let(:project) { create(:project) }
+
+    before do
+      allow(RepositoryImportWorker).to receive(:perform_async)
+
+      post :create, params: { project: params, namespace_id: project.namespace.to_param, project_id: project }
+    end
+
+    it 'sets import_url to the project' do
+      expect(project.reload.import_url).to eq('https://user:password@github.com/vim/vim.git')
+    end
+  end
 end

spec/controllers/projects/milestones_controller_spec.rb

@@ -175,6 +175,40 @@ describe Projects::MilestonesController do
       end
     end
 
+    describe '#labels' do
+      render_views
+
+      context 'as json' do
+        let!(:guest) { create(:user, username: 'guest1') }
+        let!(:group) { create(:group, :public) }
+        let!(:project) { create(:project, :public, group: group) }
+        let!(:label) { create(:label, title: 'test_label_on_private_issue', project: project) }
+        let!(:confidential_issue) { create(:labeled_issue, confidential: true, project: project, milestone: milestone, labels: [label]) }
+
+        it 'does not render labels of private issues if user has no access' do
+          sign_in(guest)
+
+          get :labels, params: { namespace_id: group.id, project_id: project.id, id: milestone.iid }, format: :json
+
+          expect(response).to have_gitlab_http_status(200)
+          expect(response.content_type).to eq 'application/json'
+
+          expect(json_response['html']).not_to include(label.title)
+        end
+
+        it 'does render labels of private issues if user has access' do
+          sign_in(user)
+
+          get :labels, params: { namespace_id: group.id, project_id: project.id, id: milestone.iid }, format: :json
+
+          expect(response).to have_gitlab_http_status(200)
+          expect(response.content_type).to eq 'application/json'
+
+          expect(json_response['html']).to include(label.title)
+        end
+      end
+    end
+
     context 'promotion succeeds' do
       before do
         group.add_developer(user)

spec/controllers/sent_notifications_controller_spec.rb

@@ -4,15 +4,31 @@ require 'rails_helper'
 
 describe SentNotificationsController do
   let(:user) { create(:user) }
-  let(:project) { create(:project) }
-  let(:sent_notification) { create(:sent_notification, project: project, noteable: issue, recipient: user) }
+  let(:project) { create(:project, :public) }
+  let(:private_project) { create(:project, :private) }
+  let(:sent_notification) { create(:sent_notification, project: target_project, noteable: noteable, recipient: user) }
 
   let(:issue) do
-    create(:issue, project: project, author: user) do |issue|
-      issue.subscriptions.create(user: user, project: project, subscribed: true)
+    create(:issue, project: target_project) do |issue|
+      issue.subscriptions.create(user: user, project: target_project, subscribed: true)
     end
   end
 
+  let(:confidential_issue) do
+    create(:issue, project: target_project, confidential: true) do |issue|
+      issue.subscriptions.create(user: user, project: target_project, subscribed: true)
+    end
+  end
+
+  let(:merge_request) do
+    create(:merge_request, source_project: target_project, target_project: target_project) do |mr|
+      mr.subscriptions.create(user: user, project: target_project, subscribed: true)
+    end
+  end
+
+  let(:noteable) { issue }
+  let(:target_project) { project }
+
   describe 'GET unsubscribe' do
     context 'when the user is not logged in' do
       context 'when the force param is passed' do
@@ -34,20 +50,93 @@ describe SentNotificationsController do
       end
 
       context 'when the force param is not passed' do
+        render_views
+
         before do
           get(:unsubscribe, params: { id: sent_notification.reply_key })
         end
 
-        it 'does not unsubscribe the user' do
-          expect(issue.subscribed?(user, project)).to be_truthy
+        shared_examples 'unsubscribing as anonymous' do
+          it 'does not unsubscribe the user' do
+            expect(noteable.subscribed?(user, target_project)).to be_truthy
+          end
+
+          it 'does not set the flash message' do
+            expect(controller).not_to set_flash[:notice]
+          end
+
+          it 'renders unsubscribe page' do
+            expect(response.status).to eq(200)
+            expect(response).to render_template :unsubscribe
+          end
         end
 
-        it 'does not set the flash message' do
-          expect(controller).not_to set_flash[:notice]
+        context 'when project is public' do
+          context 'when unsubscribing from issue' do
+            let(:noteable) { issue }
+
+            it 'shows issue title' do
+              expect(response.body).to include(issue.title)
+            end
+
+            it_behaves_like 'unsubscribing as anonymous'
+          end
+
+          context 'when unsubscribing from confidential issue' do
+            let(:noteable) { confidential_issue }
+
+            it 'does not show issue title' do
+              expect(response.body).not_to include(confidential_issue.title)
+              expect(response.body).to include(confidential_issue.to_reference)
+            end
+
+            it_behaves_like 'unsubscribing as anonymous'
+          end
+
+          context 'when unsubscribing from merge request' do
+            let(:noteable) { merge_request }
+
+            it 'shows merge request title' do
+              expect(response.body).to include(merge_request.title)
+            end
+
+            it_behaves_like 'unsubscribing as anonymous'
+          end
         end
 
-        it 'redirects to the login page' do
-          expect(response).to render_template :unsubscribe
+        context 'when project is not public' do
+          let(:target_project) { private_project }
+
+          context 'when unsubscribing from issue' do
+            let(:noteable) { issue }
+
+            it 'shows issue title' do
+              expect(response.body).not_to include(issue.title)
+            end
+
+            it_behaves_like 'unsubscribing as anonymous'
+          end
+
+          context 'when unsubscribing from confidential issue' do
+            let(:noteable) { confidential_issue }
+
+            it 'does not show issue title' do
+              expect(response.body).not_to include(confidential_issue.title)
+              expect(response.body).to include(confidential_issue.to_reference)
+            end
+
+            it_behaves_like 'unsubscribing as anonymous'
+          end
+
+          context 'when unsubscribing from merge request' do
+            let(:noteable) { merge_request }
+
+            it 'shows merge request title' do
+              expect(response.body).not_to include(merge_request.title)
+            end
+
+            it_behaves_like 'unsubscribing as anonymous'
+          end
         end
       end
     end

spec/controllers/sessions_controller_spec.rb

@@ -58,7 +58,26 @@ describe SessionsController do
         it 'authenticates user correctly' do
           post(:create, params: { user: user_params })
 
-          expect(subject.current_user). to eq user
+          expect(subject.current_user).to eq user
+        end
+
+        context 'with password authentication disabled' do
+          before do
+            stub_application_setting(password_authentication_enabled_for_web: false)
+          end
+
+          it 'does not sign in the user' do
+            post(:create, params: { user: user_params })
+
+            expect(@request.env['warden']).not_to be_authenticated
+            expect(subject.current_user).to be_nil
+          end
+
+          it 'returns status 403' do
+            post(:create, params: { user: user_params })
+
+            expect(response.status).to eq 403
+          end
         end
 
         it 'creates an audit log record' do
@@ -153,6 +172,19 @@ describe SessionsController do
         end
       end
 
+      context 'with password authentication disabled' do
+        before do
+          stub_application_setting(password_authentication_enabled_for_web: false)
+        end
+
+        it 'allows 2FA stage of non-password login' do
+          authenticate_2fa(otp_attempt: user.current_otp)
+
+          expect(@request.env['warden']).to be_authenticated
+          expect(subject.current_user).to eq user
+        end
+      end
+
       ##
       # See #14900 issue
       #

spec/features/admin/admin_settings_spec.rb

@@ -332,16 +332,19 @@ describe 'Admin updates settings' do
   end
 
   context 'Network page' do
-    it 'Enable outbound requests' do
+    it 'Changes Outbound requests settings' do
       visit network_admin_application_settings_path
 
       page.within('.as-outbound') do
         check 'Allow requests to the local network from hooks and services'
+        # Enabled by default
+        uncheck 'Enforce DNS rebinding attack protection'
         click_button 'Save changes'
       end
 
       expect(page).to have_content "Application settings saved successfully"
       expect(Gitlab::CurrentSettings.allow_local_requests_from_hooks_and_services).to be true
+      expect(Gitlab::CurrentSettings.dns_rebinding_protection_enabled).to be false
     end
   end
 

spec/features/issuables/issuable_list_spec.rb

@@ -76,7 +76,7 @@ describe 'issuable list' do
           create(:issue, project: project, author: user)
         else
           create(:merge_request, source_project: project, source_branch: generate(:branch))
-          source_branch = FFaker::Name.name
+          source_branch = FFaker::Lorem.characters(8)
           pipeline = create(:ci_empty_pipeline, project: project, ref: source_branch, status: %w(running failed success).sample, sha: 'any')
           create(:merge_request, title: FFaker::Lorem.sentence, source_project: project, source_branch: source_branch, head_pipeline: pipeline)
         end

spec/javascripts/projects/project_new_spec.js

@@ -10,7 +10,17 @@ describe('New Project', () => {
     setFixtures(`
       <div class='toggle-import-form'>
         <div class='import-url-data'>
-          <input id="project_import_url" />
+          <div class="form-group">
+            <input id="project_import_url" />
+          </div>
+          <div id="import-url-auth-method">
+            <div class="form-group">
+              <input id="project-import-url-user" />
+            </div>
+            <div class="form-group">
+              <input id="project_import_url_password" />
+            </div>
+          </div>
           <input id="project_name" />
           <input id="project_path" />
         </div>
@@ -119,7 +129,7 @@ describe('New Project', () => {
       });
 
       it('changes project path for HTTPS URL in $projectImportUrl', () => {
-        $projectImportUrl.val('https://username:password@gitlab.company.com/group/project.git');
+        $projectImportUrl.val('https://gitlab.company.com/group/project.git');
 
         projectNew.deriveProjectPathFromUrl($projectImportUrl);
 

spec/lib/banzai/redactor_spec.rb

@@ -13,10 +13,10 @@ describe Banzai::Redactor do
 
       it 'redacts an array of documents' do
         doc1 = Nokogiri::HTML
-               .fragment('<a class="gfm" data-reference-type="issue">foo</a>')
+               .fragment('<a class="gfm" href="https://www.gitlab.com" data-reference-type="issue">foo</a>')
 
         doc2 = Nokogiri::HTML
-               .fragment('<a class="gfm" data-reference-type="issue">bar</a>')
+               .fragment('<a class="gfm" href="https://www.gitlab.com" data-reference-type="issue">bar</a>')
 
         redacted_data = redactor.redact([doc1, doc2])
 
@@ -27,7 +27,7 @@ describe Banzai::Redactor do
       end
 
       it 'replaces redacted reference with inner HTML' do
-        doc = Nokogiri::HTML.fragment("<a class='gfm' data-reference-type='issue'>foo</a>")
+        doc = Nokogiri::HTML.fragment("<a class='gfm' href='https://www.gitlab.com' data-reference-type='issue'>foo</a>")
         redactor.redact([doc])
         expect(doc.to_html).to eq('foo')
       end
@@ -35,20 +35,24 @@ describe Banzai::Redactor do
       context 'when data-original attribute provided' do
         let(:original_content) { '<code>foo</code>' }
         it 'replaces redacted reference with original content' do
-          doc = Nokogiri::HTML.fragment("<a class='gfm' data-reference-type='issue' data-original='#{original_content}'>bar</a>")
+          doc = Nokogiri::HTML.fragment("<a class='gfm' href='https://www.gitlab.com' data-reference-type='issue' data-original='#{original_content}'>bar</a>")
           redactor.redact([doc])
           expect(doc.to_html).to eq(original_content)
         end
-      end
-
-      it 'returns <a> tag with original href if it is originally a link reference' do
-        href = 'http://localhost:3000'
-        doc = Nokogiri::HTML
-          .fragment("<a class='gfm' data-reference-type='issue' data-original=#{href} data-link-reference='true'>#{href}</a>")
 
-        redactor.redact([doc])
+        it 'does not replace redacted reference with original content if href is given' do
+          html = "<a href='https://www.gitlab.com' data-link-reference='true' class='gfm' data-reference-type='issue' data-reference-type='issue' data-original='Marge'>Marge</a>"
+          doc = Nokogiri::HTML.fragment(html)
+          redactor.redact([doc])
+          expect(doc.to_html).to eq('<a href="https://www.gitlab.com">Marge</a>')
+        end
 
-        expect(doc.to_html).to eq('<a href="http://localhost:3000">http://localhost:3000</a>')
+        it 'uses the original content as the link content if given' do
+          html = "<a href='https://www.gitlab.com' data-link-reference='true' class='gfm' data-reference-type='issue' data-reference-type='issue' data-original='Homer'>Marge</a>"
+          doc = Nokogiri::HTML.fragment(html)
+          redactor.redact([doc])
+          expect(doc.to_html).to eq('<a href="https://www.gitlab.com">Homer</a>')
+        end
       end
     end
 
@@ -61,7 +65,7 @@ describe Banzai::Redactor do
       end
 
       it 'redacts an issue attached' do
-        doc = Nokogiri::HTML.fragment("<a class='gfm' data-reference-type='issue' data-issue='#{issue.id}'>foo</a>")
+        doc = Nokogiri::HTML.fragment("<a class='gfm' href='https://www.gitlab.com' data-reference-type='issue' data-issue='#{issue.id}'>foo</a>")
 
         redactor.redact([doc])
 
@@ -69,7 +73,7 @@ describe Banzai::Redactor do
       end
 
       it 'redacts an external issue' do
-        doc = Nokogiri::HTML.fragment("<a class='gfm' data-reference-type='issue' data-external-issue='#{issue.id}' data-project='#{project.id}'>foo</a>")
+        doc = Nokogiri::HTML.fragment("<a class='gfm' href='https://www.gitlab.com' data-reference-type='issue' data-external-issue='#{issue.id}' data-project='#{project.id}'>foo</a>")
 
         redactor.redact([doc])
 

spec/lib/gitlab/bitbucket_import/importer_spec.rb

@@ -5,6 +5,7 @@ describe Gitlab::BitbucketImport::Importer do
 
   before do
     stub_omniauth_provider('bitbucket')
+    stub_feature_flags(stricter_mr_branch_name: false)
   end
 
   let(:statuses) do

spec/lib/gitlab/ci/config/external/file/remote_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::External::File::Remote do
+  include StubRequests
+
   let(:context) { described_class::Context.new(nil, '12345', nil, Set.new) }
   let(:params) { { remote: location } }
   let(:remote_file) { described_class.new(params, context) }
@@ -46,7 +48,7 @@ describe Gitlab::Ci::Config::External::File::Remote do
   describe "#valid?" do
     context 'when is a valid remote url' do
       before do
-        WebMock.stub_request(:get, location).to_return(body: remote_file_content)
+        stub_full_request(location).to_return(body: remote_file_content)
       end
 
       it 'returns true' do
@@ -92,7 +94,7 @@ describe Gitlab::Ci::Config::External::File::Remote do
   describe "#content" do
     context 'with a valid remote file' do
       before do
-        WebMock.stub_request(:get, location).to_return(body: remote_file_content)
+        stub_full_request(location).to_return(body: remote_file_content)
       end
 
       it 'returns the content of the file' do
@@ -114,7 +116,7 @@ describe Gitlab::Ci::Config::External::File::Remote do
       let(:location) { 'https://asdasdasdaj48ggerexample.com' }
 
       before do
-        WebMock.stub_request(:get, location).to_raise(SocketError.new('Some HTTP error'))
+        stub_full_request(location).to_raise(SocketError.new('Some HTTP error'))
       end
 
       it 'is nil' do
@@ -144,7 +146,7 @@ describe Gitlab::Ci::Config::External::File::Remote do
 
     context 'when timeout error has been raised' do
       before do
-        WebMock.stub_request(:get, location).to_timeout
+        stub_full_request(location).to_timeout
       end
 
       it 'returns error message about a timeout' do
@@ -154,7 +156,7 @@ describe Gitlab::Ci::Config::External::File::Remote do
 
     context 'when HTTP error has been raised' do
       before do
-        WebMock.stub_request(:get, location).to_raise(Gitlab::HTTP::Error)
+        stub_full_request(location).to_raise(Gitlab::HTTP::Error)
       end
 
       it 'returns error message about a HTTP error' do
@@ -164,7 +166,7 @@ describe Gitlab::Ci::Config::External::File::Remote do
 
     context 'when response has 404 status' do
       before do
-        WebMock.stub_request(:get, location).to_return(body: remote_file_content, status: 404)
+        stub_full_request(location).to_return(body: remote_file_content, status: 404)
       end
 
       it 'returns error message about a timeout' do

spec/lib/gitlab/ci/config/external/mapper_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::External::Mapper do
+  include StubRequests
+
   set(:project) { create(:project, :repository) }
   set(:user) { create(:user) }
 
@@ -18,7 +20,7 @@ describe Gitlab::Ci::Config::External::Mapper do
   end
 
   before do
-    WebMock.stub_request(:get, remote_url).to_return(body: file_content)
+    stub_full_request(remote_url).to_return(body: file_content)
   end
 
   describe '#process' do

spec/lib/gitlab/ci/config/external/processor_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::External::Processor do
+  include StubRequests
+
   set(:project) { create(:project, :repository) }
   set(:another_project) { create(:project, :repository) }
   set(:user) { create(:user) }
@@ -42,7 +44,7 @@ describe Gitlab::Ci::Config::External::Processor do
       let(:values) { { include: remote_file, image: 'ruby:2.2' } }
 
       before do
-        WebMock.stub_request(:get, remote_file).to_raise(SocketError.new('Some HTTP error'))
+        stub_full_request(remote_file).and_raise(SocketError.new('Some HTTP error'))
       end
 
       it 'raises an error' do
@@ -75,7 +77,7 @@ describe Gitlab::Ci::Config::External::Processor do
       end
 
       before do
-        WebMock.stub_request(:get, remote_file).to_return(body: external_file_content)
+        stub_full_request(remote_file).to_return(body: external_file_content)
       end
 
       it 'appends the file to the values' do
@@ -145,7 +147,7 @@ describe Gitlab::Ci::Config::External::Processor do
         allow_any_instance_of(Gitlab::Ci::Config::External::File::Local)
           .to receive(:fetch_local_content).and_return(local_file_content)
 
-        WebMock.stub_request(:get, remote_file).to_return(body: remote_file_content)
+        stub_full_request(remote_file).to_return(body: remote_file_content)
       end
 
       it 'appends the files to the values' do
@@ -191,7 +193,8 @@ describe Gitlab::Ci::Config::External::Processor do
       end
 
       it 'takes precedence' do
-        WebMock.stub_request(:get, remote_file).to_return(body: remote_file_content)
+        stub_full_request(remote_file).to_return(body: remote_file_content)
+
         expect(processor.perform[:image]).to eq('ruby:2.2')
       end
     end
@@ -231,7 +234,8 @@ describe Gitlab::Ci::Config::External::Processor do
           HEREDOC
         end
 
-        WebMock.stub_request(:get, 'http://my.domain.com/config.yml').to_return(body: 'remote_build: { script: echo Hello World }')
+        stub_full_request('http://my.domain.com/config.yml')
+          .to_return(body: 'remote_build: { script: echo Hello World }')
       end
 
       context 'when project is public' do
@@ -273,8 +277,10 @@ describe Gitlab::Ci::Config::External::Processor do
 
     context 'when config includes an external configuration file via SSL web request' do
       before do
-        stub_request(:get, 'https://sha256.badssl.com/fake.yml').to_return(body: 'image: ruby:2.6', status: 200)
-        stub_request(:get, 'https://self-signed.badssl.com/fake.yml')
+        stub_full_request('https://sha256.badssl.com/fake.yml', ip_address: '8.8.8.8')
+          .to_return(body: 'image: ruby:2.6', status: 200)
+
+        stub_full_request('https://self-signed.badssl.com/fake.yml', ip_address: '8.8.8.9')
           .to_raise(OpenSSL::SSL::SSLError.new('SSL_connect returned=1 errno=0 state=error: certificate verify failed (self signed certificate)'))
       end
 

spec/lib/gitlab/ci/config_spec.rb

 require 'spec_helper'
 
 describe Gitlab::Ci::Config do
+  include StubRequests
+
   set(:user) { create(:user) }
 
   let(:config) do
@@ -216,8 +218,7 @@ describe Gitlab::Ci::Config do
     end
 
     before do
-      WebMock.stub_request(:get, remote_location)
-        .to_return(body: remote_file_content)
+      stub_full_request(remote_location).to_return(body: remote_file_content)
 
       allow(project.repository)
         .to receive(:blob_data_at).and_return(local_file_content)

spec/lib/gitlab/ci/yaml_processor_spec.rb

@@ -3,6 +3,8 @@ require 'spec_helper'
 module Gitlab
   module Ci
     describe YamlProcessor do
+      include StubRequests
+
       subject { described_class.new(config, user: nil) }
 
       describe '#build_attributes' do
@@ -648,7 +650,7 @@ module Gitlab
             end
 
             before do
-              WebMock.stub_request(:get, 'https://gitlab.com/awesome-project/raw/master/.before-script-template.yml')
+              stub_full_request('https://gitlab.com/awesome-project/raw/master/.before-script-template.yml')
                 .to_return(
                   status: 200,
                   headers: { 'Content-Type' => 'application/json' },

spec/lib/gitlab/git_ref_validator_spec.rb

 require 'spec_helper'
 
 describe Gitlab::GitRefValidator do
-  it { expect(described_class.validate('feature/new')).to be_truthy }
-  it { expect(described_class.validate('implement_@all')).to be_truthy }
-  it { expect(described_class.validate('my_new_feature')).to be_truthy }
-  it { expect(described_class.validate('my-branch')).to be_truthy }
-  it { expect(described_class.validate('#1')).to be_truthy }
-  it { expect(described_class.validate('feature/refs/heads/foo')).to be_truthy }
-  it { expect(described_class.validate('feature/~new/')).to be_falsey }
-  it { expect(described_class.validate('feature/^new/')).to be_falsey }
-  it { expect(described_class.validate('feature/:new/')).to be_falsey }
-  it { expect(described_class.validate('feature/?new/')).to be_falsey }
-  it { expect(described_class.validate('feature/*new/')).to be_falsey }
-  it { expect(described_class.validate('feature/[new/')).to be_falsey }
-  it { expect(described_class.validate('feature/new/')).to be_falsey }
-  it { expect(described_class.validate('feature/new.')).to be_falsey }
-  it { expect(described_class.validate('feature\@{')).to be_falsey }
-  it { expect(described_class.validate('feature\new')).to be_falsey }
-  it { expect(described_class.validate('feature//new')).to be_falsey }
-  it { expect(described_class.validate('feature new')).to be_falsey }
-  it { expect(described_class.validate('refs/heads/')).to be_falsey }
-  it { expect(described_class.validate('refs/remotes/')).to be_falsey }
-  it { expect(described_class.validate('refs/heads/feature')).to be_falsey }
-  it { expect(described_class.validate('refs/remotes/origin')).to be_falsey }
-  it { expect(described_class.validate('-')).to be_falsey }
-  it { expect(described_class.validate('-branch')).to be_falsey }
-  it { expect(described_class.validate('.tag')).to be_falsey }
-  it { expect(described_class.validate('my branch')).to be_falsey }
-  it { expect(described_class.validate("\xA0\u0000\xB0")).to be_falsey }
+  using RSpec::Parameterized::TableSyntax
+
+  context '.validate' do
+    it { expect(described_class.validate('feature/new')).to be true }
+    it { expect(described_class.validate('implement_@all')).to be true }
+    it { expect(described_class.validate('my_new_feature')).to be true }
+    it { expect(described_class.validate('my-branch')).to be true }
+    it { expect(described_class.validate('#1')).to be true }
+    it { expect(described_class.validate('feature/refs/heads/foo')).to be true }
+    it { expect(described_class.validate('feature/~new/')).to be false }
+    it { expect(described_class.validate('feature/^new/')).to be false }
+    it { expect(described_class.validate('feature/:new/')).to be false }
+    it { expect(described_class.validate('feature/?new/')).to be false }
+    it { expect(described_class.validate('feature/*new/')).to be false }
+    it { expect(described_class.validate('feature/[new/')).to be false }
+    it { expect(described_class.validate('feature/new/')).to be false }
+    it { expect(described_class.validate('feature/new.')).to be false }
+    it { expect(described_class.validate('feature\@{')).to be false }
+    it { expect(described_class.validate('feature\new')).to be false }
+    it { expect(described_class.validate('feature//new')).to be false }
+    it { expect(described_class.validate('feature new')).to be false }
+    it { expect(described_class.validate('refs/heads/')).to be false }
+    it { expect(described_class.validate('refs/remotes/')).to be false }
+    it { expect(described_class.validate('refs/heads/feature')).to be false }
+    it { expect(described_class.validate('refs/remotes/origin')).to be false }
+    it { expect(described_class.validate('-')).to be false }
+    it { expect(described_class.validate('-branch')).to be false }
+    it { expect(described_class.validate('+foo:bar')).to be false }
+    it { expect(described_class.validate('foo:bar')).to be false }
+    it { expect(described_class.validate('.tag')).to be false }
+    it { expect(described_class.validate('my branch')).to be false }
+    it { expect(described_class.validate("\xA0\u0000\xB0")).to be false }
+  end
+
+  context '.validate_merge_request_branch' do
+    it { expect(described_class.validate_merge_request_branch('HEAD')).to be true }
+    it { expect(described_class.validate_merge_request_branch('feature/new')).to be true }
+    it { expect(described_class.validate_merge_request_branch('implement_@all')).to be true }
+    it { expect(described_class.validate_merge_request_branch('my_new_feature')).to be true }
+    it { expect(described_class.validate_merge_request_branch('my-branch')).to be true }
+    it { expect(described_class.validate_merge_request_branch('#1')).to be true }
+    it { expect(described_class.validate_merge_request_branch('feature/refs/heads/foo')).to be true }
+    it { expect(described_class.validate_merge_request_branch('feature/~new/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature/^new/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature/:new/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature/?new/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature/*new/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature/[new/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature/new/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature/new.')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature\@{')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature\new')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature//new')).to be false }
+    it { expect(described_class.validate_merge_request_branch('feature new')).to be false }
+    it { expect(described_class.validate_merge_request_branch('refs/heads/master')).to be true }
+    it { expect(described_class.validate_merge_request_branch('refs/heads/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('refs/remotes/')).to be false }
+    it { expect(described_class.validate_merge_request_branch('-')).to be false }
+    it { expect(described_class.validate_merge_request_branch('-branch')).to be false }
+    it { expect(described_class.validate_merge_request_branch('+foo:bar')).to be false }
+    it { expect(described_class.validate_merge_request_branch('foo:bar')).to be false }
+    it { expect(described_class.validate_merge_request_branch('.tag')).to be false }
+    it { expect(described_class.validate_merge_request_branch('my branch')).to be false }
+    it { expect(described_class.validate_merge_request_branch("\xA0\u0000\xB0")).to be false }
+  end
 end

spec/lib/gitlab/http_connection_adapter_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::HTTPConnectionAdapter do
+  describe '#connection' do
+    context 'when local requests are not allowed' do
+      it 'sets up the connection' do
+        uri = URI('https://example.org')
+
+        connection = described_class.new(uri).connection
+
+        expect(connection).to be_a(Net::HTTP)
+        expect(connection.address).to eq('93.184.216.34')
+        expect(connection.hostname_override).to eq('example.org')
+        expect(connection.addr_port).to eq('example.org')
+        expect(connection.port).to eq(443)
+      end
+
+      it 'raises error when it is a request to local address' do
+        uri = URI('http://172.16.0.0/12')
+
+        expect { described_class.new(uri).connection }
+          .to raise_error(Gitlab::HTTP::BlockedUrlError,
+                          "URL 'http://172.16.0.0/12' is blocked: Requests to the local network are not allowed")
+      end
+
+      it 'raises error when it is a request to localhost address' do
+        uri = URI('http://127.0.0.1')
+
+        expect { described_class.new(uri).connection }
+          .to raise_error(Gitlab::HTTP::BlockedUrlError,
+                          "URL 'http://127.0.0.1' is blocked: Requests to localhost are not allowed")
+      end
+
+      context 'when port different from URL scheme is used' do
+        it 'sets up the addr_port accordingly' do
+          uri = URI('https://example.org:8080')
+
+          connection = described_class.new(uri).connection
+
+          expect(connection.address).to eq('93.184.216.34')
+          expect(connection.hostname_override).to eq('example.org')
+          expect(connection.addr_port).to eq('example.org:8080')
+          expect(connection.port).to eq(8080)
+        end
+      end
+    end
+
+    context 'when DNS rebinding protection is disabled' do
+      it 'sets up the connection' do
+        stub_application_setting(dns_rebinding_protection_enabled: false)
+
+        uri = URI('https://example.org')
+
+        connection = described_class.new(uri).connection
+
+        expect(connection).to be_a(Net::HTTP)
+        expect(connection.address).to eq('example.org')
+        expect(connection.hostname_override).to eq(nil)
+        expect(connection.addr_port).to eq('example.org')
+        expect(connection.port).to eq(443)
+      end
+    end
+
+    context 'when http(s) environment variable is set' do
+      it 'sets up the connection' do
+        stub_env('https_proxy' => 'https://my.proxy')
+
+        uri = URI('https://example.org')
+
+        connection = described_class.new(uri).connection
+
+        expect(connection).to be_a(Net::HTTP)
+        expect(connection.address).to eq('example.org')
+        expect(connection.hostname_override).to eq(nil)
+        expect(connection.addr_port).to eq('example.org')
+        expect(connection.port).to eq(443)
+      end
+    end
+
+    context 'when local requests are allowed' do
+      it 'sets up the connection' do
+        uri = URI('https://example.org')
+
+        connection = described_class.new(uri, allow_local_requests: true).connection
+
+        expect(connection).to be_a(Net::HTTP)
+        expect(connection.address).to eq('93.184.216.34')
+        expect(connection.hostname_override).to eq('example.org')
+        expect(connection.addr_port).to eq('example.org')
+        expect(connection.port).to eq(443)
+      end
+
+      it 'sets up the connection when it is a local network' do
+        uri = URI('http://172.16.0.0/12')
+
+        connection = described_class.new(uri, allow_local_requests: true).connection
+
+        expect(connection).to be_a(Net::HTTP)
+        expect(connection.address).to eq('172.16.0.0')
+        expect(connection.hostname_override).to be(nil)
+        expect(connection.addr_port).to eq('172.16.0.0')
+        expect(connection.port).to eq(80)
+      end
+
+      it 'sets up the connection when it is localhost' do
+        uri = URI('http://127.0.0.1')
+
+        connection = described_class.new(uri, allow_local_requests: true).connection
+
+        expect(connection).to be_a(Net::HTTP)
+        expect(connection.address).to eq('127.0.0.1')
+        expect(connection.hostname_override).to be(nil)
+        expect(connection.addr_port).to eq('127.0.0.1')
+        expect(connection.port).to eq(80)
+      end
+    end
+  end
+end

spec/lib/gitlab/http_spec.rb

 require 'spec_helper'
 
 describe Gitlab::HTTP do
+  include StubRequests
+
+  context 'when allow_local_requests' do
+    it 'sends the request to the correct URI' do
+      stub_full_request('https://example.org:8080', ip_address: '8.8.8.8').to_return(status: 200)
+
+      described_class.get('https://example.org:8080', allow_local_requests: false)
+
+      expect(WebMock).to have_requested(:get, 'https://8.8.8.8:8080').once
+    end
+  end
+
+  context 'when not allow_local_requests' do
+    it 'sends the request to the correct URI' do
+      stub_full_request('https://example.org:8080')
+
+      described_class.get('https://example.org:8080', allow_local_requests: true)
+
+      expect(WebMock).to have_requested(:get, 'https://8.8.8.9:8080').once
+    end
+  end
+
   describe 'allow_local_requests_from_hooks_and_services is' do
     before do
       WebMock.stub_request(:get, /.*/).to_return(status: 200, body: 'Success')
@@ -21,6 +43,8 @@ describe Gitlab::HTTP do
 
       context 'if allow_local_requests set to true' do
         it 'override the global value and allow requests to localhost or private network' do
+          stub_full_request('http://localhost:3003')
+
           expect { described_class.get('http://localhost:3003', allow_local_requests: true) }.not_to raise_error
         end
       end
@@ -32,6 +56,8 @@ describe Gitlab::HTTP do
       end
 
       it 'allow requests to localhost' do
+        stub_full_request('http://localhost:3003')
+
         expect { described_class.get('http://localhost:3003') }.not_to raise_error
       end
 
@@ -49,7 +75,7 @@ describe Gitlab::HTTP do
 
   describe 'handle redirect loops' do
     before do
-      WebMock.stub_request(:any, "http://example.org").to_raise(HTTParty::RedirectionTooDeep.new("Redirection Too Deep"))
+      stub_full_request("http://example.org", method: :any).to_raise(HTTParty::RedirectionTooDeep.new("Redirection Too Deep"))
     end
 
     it 'handles GET requests' do

spec/lib/gitlab/import_export/after_export_strategies/web_upload_strategy_spec.rb

 require 'spec_helper'
 
 describe Gitlab::ImportExport::AfterExportStrategies::WebUploadStrategy do
+  include StubRequests
+
   let(:example_url) { 'http://www.example.com' }
   let(:strategy) { subject.new(url: example_url, http_method: 'post') }
   let!(:project) { create(:project, :with_export) }
@@ -35,7 +37,7 @@ describe Gitlab::ImportExport::AfterExportStrategies::WebUploadStrategy do
 
     context 'when upload fails' do
       it 'stores the export error' do
-        stub_request(:post, example_url).to_return(status: [404, 'Page not found'])
+        stub_full_request(example_url, method: :post).to_return(status: [404, 'Page not found'])
 
         strategy.execute(user, project)
 

spec/lib/gitlab/search_results_spec.rb

@@ -256,4 +256,28 @@ describe Gitlab::SearchResults do
 
     expect(results.objects('merge_requests')).not_to include merge_request
   end
+
+  context 'milestones' do
+    it 'returns correct set of milestones' do
+      private_project_1 = create(:project, :private)
+      private_project_2 = create(:project, :private)
+      internal_project = create(:project, :internal)
+      public_project_1 = create(:project, :public)
+      public_project_2 = create(:project, :public, :issues_disabled, :merge_requests_disabled)
+      private_project_1.add_developer(user)
+      # milestones that should not be visible
+      create(:milestone, project: private_project_2, title: 'Private project without access milestone')
+      create(:milestone, project: public_project_2, title: 'Public project with milestones disabled milestone')
+      # milestones that should be visible
+      milestone_1 = create(:milestone, project: private_project_1, title: 'Private project with access milestone', state: 'closed')
+      milestone_2 = create(:milestone, project: internal_project, title: 'Internal project milestone')
+      milestone_3 = create(:milestone, project: public_project_1, title: 'Public project with milestones enabled milestone')
+      # Global search scope takes user authorized projects, internal projects and public projects.
+      limit_projects = ProjectsFinder.new(current_user: user).execute
+
+      milestones = described_class.new(user, limit_projects, 'milestone').objects('milestones')
+
+      expect(milestones).to match_array([milestone_1, milestone_2, milestone_3])
+    end
+  end
 end

spec/lib/gitlab/url_blocker_spec.rb

@@ -2,6 +2,87 @@
 require 'spec_helper'
 
 describe Gitlab::UrlBlocker do
+  describe '#validate!' do
+    context 'when URI is nil' do
+      let(:import_url) { nil }
+
+      it 'returns no URI and hostname' do
+        uri, hostname = described_class.validate!(import_url)
+
+        expect(uri).to be(nil)
+        expect(hostname).to be(nil)
+      end
+    end
+
+    context 'when URI is internal' do
+      let(:import_url) { 'http://localhost' }
+
+      it 'returns URI and no hostname' do
+        uri, hostname = described_class.validate!(import_url)
+
+        expect(uri).to eq(Addressable::URI.parse('http://[::1]'))
+        expect(hostname).to eq('localhost')
+      end
+    end
+
+    context 'when the URL hostname is a domain' do
+      let(:import_url) { 'https://example.org' }
+
+      it 'returns URI and hostname' do
+        uri, hostname = described_class.validate!(import_url)
+
+        expect(uri).to eq(Addressable::URI.parse('https://93.184.216.34'))
+        expect(hostname).to eq('example.org')
+      end
+    end
+
+    context 'when the URL hostname is an IP address' do
+      let(:import_url) { 'https://93.184.216.34' }
+
+      it 'returns URI and no hostname' do
+        uri, hostname = described_class.validate!(import_url)
+
+        expect(uri).to eq(Addressable::URI.parse('https://93.184.216.34'))
+        expect(hostname).to be(nil)
+      end
+    end
+
+    context 'disabled DNS rebinding protection' do
+      context 'when URI is internal' do
+        let(:import_url) { 'http://localhost' }
+
+        it 'returns URI and no hostname' do
+          uri, hostname = described_class.validate!(import_url, dns_rebind_protection: false)
+
+          expect(uri).to eq(Addressable::URI.parse('http://localhost'))
+          expect(hostname).to be(nil)
+        end
+      end
+
+      context 'when the URL hostname is a domain' do
+        let(:import_url) { 'https://example.org' }
+
+        it 'returns URI and no hostname' do
+          uri, hostname = described_class.validate!(import_url, dns_rebind_protection: false)
+
+          expect(uri).to eq(Addressable::URI.parse('https://example.org'))
+          expect(hostname).to eq(nil)
+        end
+      end
+
+      context 'when the URL hostname is an IP address' do
+        let(:import_url) { 'https://93.184.216.34' }
+
+        it 'returns URI and no hostname' do
+          uri, hostname = described_class.validate!(import_url, dns_rebind_protection: false)
+
+          expect(uri).to eq(Addressable::URI.parse('https://93.184.216.34'))
+          expect(hostname).to be(nil)
+        end
+      end
+    end
+  end
+
   describe '#blocked_url?' do
     let(:ports) { Project::VALID_IMPORT_PORTS }
 
@@ -208,7 +289,7 @@ describe Gitlab::UrlBlocker do
       end
 
       def stub_domain_resolv(domain, ip)
-        address = double(ip_address: ip, ipv4_private?: true, ipv6_link_local?: false, ipv4_loopback?: false, ipv6_loopback?: false)
+        address = double(ip_address: ip, ipv4_private?: true, ipv6_link_local?: false, ipv4_loopback?: false, ipv6_loopback?: false, ipv4?: false)
         allow(Addrinfo).to receive(:getaddrinfo).with(domain, any_args).and_return([address])
         allow(address).to receive(:ipv6_v4mapped?).and_return(false)
       end

spec/lib/gitlab/url_sanitizer_spec.rb

@@ -115,6 +115,40 @@ describe Gitlab::UrlSanitizer do
     end
   end
 
+  describe '#user' do
+    context 'credentials in hash' do
+      it 'overrides URL-provided user' do
+        sanitizer = described_class.new('http://a:b@example.com', credentials: { user: 'c', password: 'd' })
+
+        expect(sanitizer.user).to eq('c')
+      end
+    end
+
+    context 'credentials in URL' do
+      where(:url, :user) do
+        'http://foo:bar@example.com' | 'foo'
+        'http://foo:bar:baz@example.com' | 'foo'
+        'http://:bar@example.com'    | nil
+        'http://foo:@example.com'    | 'foo'
+        'http://foo@example.com'     | 'foo'
+        'http://:@example.com'       | nil
+        'http://@example.com'        | nil
+        'http://example.com'         | nil
+
+        # Other invalid URLs
+        nil  | nil
+        ''   | nil
+        'no' | nil
+      end
+
+      with_them do
+        subject { described_class.new(url).user }
+
+        it { is_expected.to eq(user) }
+      end
+    end
+  end
+
   describe '#full_url' do
     context 'credentials in hash' do
       where(:credentials, :userinfo) do

spec/lib/gitlab_spec.rb

@@ -109,4 +109,34 @@ describe Gitlab do
       expect(described_class.ee?).to eq(false)
     end
   end
+
+  describe '.http_proxy_env?' do
+    it 'returns true when lower case https' do
+      stub_env('https_proxy', 'https://my.proxy')
+
+      expect(described_class.http_proxy_env?).to eq(true)
+    end
+
+    it 'returns true when upper case https' do
+      stub_env('HTTPS_PROXY', 'https://my.proxy')
+
+      expect(described_class.http_proxy_env?).to eq(true)
+    end
+
+    it 'returns true when lower case http' do
+      stub_env('http_proxy', 'http://my.proxy')
+
+      expect(described_class.http_proxy_env?).to eq(true)
+    end
+
+    it 'returns true when upper case http' do
+      stub_env('HTTP_PROXY', 'http://my.proxy')
+
+      expect(described_class.http_proxy_env?).to eq(true)
+    end
+
+    it 'returns false when not set' do
+      expect(described_class.http_proxy_env?).to eq(false)
+    end
+  end
 end

spec/lib/mattermost/session_spec.rb

@@ -2,6 +2,7 @@ require 'spec_helper'
 
 describe Mattermost::Session, type: :request do
   include ExclusiveLeaseHelpers
+  include StubRequests
 
   let(:user) { create(:user) }
 
@@ -24,7 +25,7 @@ describe Mattermost::Session, type: :request do
     let(:location) { 'http://location.tld' }
     let(:cookie_header) {'MMOAUTH=taskik8az7rq8k6rkpuas7htia; Path=/;'}
     let!(:stub) do
-      WebMock.stub_request(:get, "#{mattermost_url}/oauth/gitlab/login")
+      stub_full_request("#{mattermost_url}/oauth/gitlab/login")
         .to_return(headers: { 'location' => location, 'Set-Cookie' => cookie_header }, status: 302)
     end
 
@@ -63,7 +64,7 @@ describe Mattermost::Session, type: :request do
         end
 
         before do
-          WebMock.stub_request(:get, "#{mattermost_url}/signup/gitlab/complete")
+          stub_full_request("#{mattermost_url}/signup/gitlab/complete")
             .with(query: hash_including({ 'state' => state }))
             .to_return do |request|
               post "/oauth/token",
@@ -80,7 +81,7 @@ describe Mattermost::Session, type: :request do
               end
             end
 
-          WebMock.stub_request(:post, "#{mattermost_url}/api/v4/users/logout")
+          stub_full_request("#{mattermost_url}/api/v4/users/logout", method: :post)
             .to_return(headers: { Authorization: 'token thisworksnow' }, status: 200)
         end
 

spec/models/merge_request_spec.rb

@@ -173,6 +173,42 @@ describe MergeRequest do
       end
     end
 
+    context 'for branch' do
+      before do
+        stub_feature_flags(stricter_mr_branch_name: false)
+      end
+
+      using RSpec::Parameterized::TableSyntax
+
+      where(:branch_name, :valid) do
+        'foo' | true
+        'foo:bar' | false
+        '+foo:bar' | false
+        'foo bar' | false
+        '-foo' | false
+        'HEAD' | true
+        'refs/heads/master' | true
+      end
+
+      with_them do
+        it "validates source_branch" do
+          subject = build(:merge_request, source_branch: branch_name, target_branch: 'master')
+
+          subject.valid?
+
+          expect(subject.errors.added?(:source_branch)).to eq(!valid)
+        end
+
+        it "validates target_branch" do
+          subject = build(:merge_request, source_branch: 'master', target_branch: branch_name)
+
+          subject.valid?
+
+          expect(subject.errors.added?(:target_branch)).to eq(!valid)
+        end
+      end
+    end
+
     context 'for forks' do
       let(:project) { create(:project) }
       let(:fork1) { fork_project(project) }

spec/models/project_services/assembla_service_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe AssemblaService do
+  include StubRequests
+
   describe "Associations" do
     it { is_expected.to belong_to :project }
     it { is_expected.to have_one :service_hook }
@@ -23,12 +25,12 @@ describe AssemblaService do
       )
       @sample_data = Gitlab::DataBuilder::Push.build_sample(project, user)
       @api_url = 'https://atlas.assembla.com/spaces/project_name/github_tool?secret_key=verySecret'
-      WebMock.stub_request(:post, @api_url)
+      stub_full_request(@api_url, method: :post)
     end
 
     it "calls Assembla API" do
       @assembla_service.execute(@sample_data)
-      expect(WebMock).to have_requested(:post, @api_url).with(
+      expect(WebMock).to have_requested(:post, stubbed_hostname(@api_url)).with(
         body: /#{@sample_data[:before]}.*#{@sample_data[:after]}.*#{project.path}/
       ).once
     end

spec/models/project_services/bamboo_service_spec.rb

@@ -4,6 +4,7 @@ require 'spec_helper'
 
 describe BambooService, :use_clean_rails_memory_store_caching do
   include ReactiveCachingHelpers
+  include StubRequests
 
   let(:bamboo_url) { 'http://gitlab.com/bamboo' }
 
@@ -257,7 +258,7 @@ describe BambooService, :use_clean_rails_memory_store_caching do
   end
 
   def stub_bamboo_request(url, status, body)
-    WebMock.stub_request(:get, url).to_return(
+    stub_full_request(url).to_return(
       status: status,
       headers: { 'Content-Type' => 'application/json' },
       body: body

spec/models/project_services/buildkite_service_spec.rb

@@ -4,6 +4,7 @@ require 'spec_helper'
 
 describe BuildkiteService, :use_clean_rails_memory_store_caching do
   include ReactiveCachingHelpers
+  include StubRequests
 
   let(:project) { create(:project) }
 
@@ -110,10 +111,9 @@ describe BuildkiteService, :use_clean_rails_memory_store_caching do
     body ||= %q({"status":"success"})
     buildkite_full_url = 'https://gitlab.buildkite.com/status/secret-sauce-status-token.json?commit=123'
 
-    WebMock.stub_request(:get, buildkite_full_url).to_return(
-      status: status,
-      headers: { 'Content-Type' => 'application/json' },
-      body: body
-    )
+    stub_full_request(buildkite_full_url)
+      .to_return(status: status,
+                 headers: { 'Content-Type' => 'application/json' },
+                 body: body)
   end
 end

spec/models/project_services/campfire_service_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe CampfireService do
+  include StubRequests
+
   describe 'Associations' do
     it { is_expected.to belong_to :project }
     it { is_expected.to have_one :service_hook }
@@ -49,39 +51,37 @@ describe CampfireService do
     it "calls Campfire API to get a list of rooms and speak in a room" do
       # make sure a valid list of rooms is returned
       body = File.read(Rails.root + 'spec/fixtures/project_services/campfire/rooms.json')
-      WebMock.stub_request(:get, @rooms_url).with(basic_auth: @auth).to_return(
+
+      stub_full_request(@rooms_url).with(basic_auth: @auth).to_return(
         body: body,
         status: 200,
         headers: @headers
       )
+
       # stub the speak request with the room id found in the previous request's response
       speak_url = 'https://project-name.campfirenow.com/room/123/speak.json'
-      WebMock.stub_request(:post, speak_url).with(basic_auth: @auth)
+      stub_full_request(speak_url, method: :post).with(basic_auth: @auth)
 
       @campfire_service.execute(@sample_data)
 
-      expect(WebMock).to have_requested(:get, @rooms_url).once
-      expect(WebMock).to have_requested(:post, speak_url).with(
-        body: /#{project.path}.*#{@sample_data[:before]}.*#{@sample_data[:after]}/
-      ).once
+      expect(WebMock).to have_requested(:get, stubbed_hostname(@rooms_url)).once
+      expect(WebMock).to have_requested(:post, stubbed_hostname(speak_url))
+                           .with(body: /#{project.path}.*#{@sample_data[:before]}.*#{@sample_data[:after]}/).once
     end
 
     it "calls Campfire API to get a list of rooms but shouldn't speak in a room" do
       # return a list of rooms that do not contain a room named 'test-room'
       body = File.read(Rails.root + 'spec/fixtures/project_services/campfire/rooms2.json')
-      WebMock.stub_request(:get, @rooms_url).with(basic_auth: @auth).to_return(
+      stub_full_request(@rooms_url).with(basic_auth: @auth).to_return(
         body: body,
         status: 200,
         headers: @headers
       )
-      # we want to make sure no request is sent to the /speak endpoint, here is a basic
-      # regexp that matches this endpoint
-      speak_url = 'https://verySecret:X@project-name.campfirenow.com/room/.*/speak.json'
 
       @campfire_service.execute(@sample_data)
 
-      expect(WebMock).to have_requested(:get, @rooms_url).once
-      expect(WebMock).not_to have_requested(:post, /#{speak_url}/)
+      expect(WebMock).to have_requested(:get, 'https://8.8.8.9/rooms.json').once
+      expect(WebMock).not_to have_requested(:post, '*/room/.*/speak.json')
     end
   end
 end

spec/models/project_services/pivotaltracker_service_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe PivotaltrackerService do
+  include StubRequests
+
   describe 'Associations' do
     it { is_expected.to belong_to :project }
     it { is_expected.to have_one :service_hook }
@@ -53,12 +55,12 @@ describe PivotaltrackerService do
     end
 
     before do
-      WebMock.stub_request(:post, url)
+      stub_full_request(url, method: :post)
     end
 
     it 'posts correct message' do
       service.execute(push_data)
-      expect(WebMock).to have_requested(:post, url).with(
+      expect(WebMock).to have_requested(:post, stubbed_hostname(url)).with(
         body: {
           'source_commit' => {
             'commit_id' => '21c12ea',
@@ -85,14 +87,14 @@ describe PivotaltrackerService do
         service.execute(push_data(branch: 'master'))
         service.execute(push_data(branch: 'v10'))
 
-        expect(WebMock).to have_requested(:post, url).twice
+        expect(WebMock).to have_requested(:post, stubbed_hostname(url)).twice
       end
 
       it 'does not post message if branch is not in the list' do
         service.execute(push_data(branch: 'mas'))
         service.execute(push_data(branch: 'v11'))
 
-        expect(WebMock).not_to have_requested(:post, url)
+        expect(WebMock).not_to have_requested(:post, stubbed_hostname(url))
       end
     end
   end

spec/models/project_services/pushover_service_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe PushoverService do
+  include StubRequests
+
   describe 'Associations' do
     it { is_expected.to belong_to :project }
     it { is_expected.to have_one :service_hook }
@@ -57,13 +59,13 @@ describe PushoverService do
         sound: sound
       )
 
-      WebMock.stub_request(:post, api_url)
+      stub_full_request(api_url, method: :post, ip_address: '8.8.8.8')
     end
 
     it 'calls Pushover API' do
       pushover.execute(sample_data)
 
-      expect(WebMock).to have_requested(:post, api_url).once
+      expect(WebMock).to have_requested(:post, 'https://8.8.8.8/1/messages.json').once
     end
   end
 end

spec/models/project_services/teamcity_service_spec.rb

@@ -4,6 +4,7 @@ require 'spec_helper'
 
 describe TeamcityService, :use_clean_rails_memory_store_caching do
   include ReactiveCachingHelpers
+  include StubRequests
 
   let(:teamcity_url) { 'http://gitlab.com/teamcity' }
 
@@ -212,7 +213,7 @@ describe TeamcityService, :use_clean_rails_memory_store_caching do
 
     body ||= %Q({"build":{"status":"#{build_status}","id":"666"}})
 
-    WebMock.stub_request(:get, teamcity_full_url).with(basic_auth: auth).to_return(
+    stub_full_request(teamcity_full_url).with(basic_auth: auth).to_return(
       status: status,
       headers: { 'Content-Type' => 'application/json' },
       body: body

spec/models/project_spec.rb

@@ -3170,6 +3170,23 @@ describe Project do
     end
   end
 
+  describe '.ids_with_milestone_available_for' do
+    let!(:user) { create(:user) }
+
+    it 'returns project ids with milestones available for user' do
+      project_1 = create(:project, :public, :merge_requests_disabled, :issues_disabled)
+      project_2 = create(:project, :public, :merge_requests_disabled)
+      project_3 = create(:project, :public, :issues_disabled)
+      project_4 = create(:project, :public)
+      project_4.project_feature.update(issues_access_level: ProjectFeature::PRIVATE, merge_requests_access_level: ProjectFeature::PRIVATE )
+
+      project_ids = described_class.ids_with_milestone_available_for(user).pluck(:id)
+
+      expect(project_ids).to include(project_2.id, project_3.id)
+      expect(project_ids).not_to include(project_1.id, project_4.id)
+    end
+  end
+
   describe '.with_feature_available_for_user' do
     let(:user) { create(:user) }
     let(:feature) { MergeRequest }

spec/requests/api/search_spec.rb

@@ -70,11 +70,30 @@ describe API::Search do
       context 'for milestones scope' do
         before do
           create(:milestone, project: project, title: 'awesome milestone')
+        end
+
+        context 'when user can read project milestones' do
+          before do
+            get api('/search', user), params: { scope: 'milestones', search: 'awesome' }
+          end
 
-          get api('/search', user), params: { scope: 'milestones', search: 'awesome' }
+          it_behaves_like 'response is correct', schema: 'public_api/v4/milestones'
         end
 
-        it_behaves_like 'response is correct', schema: 'public_api/v4/milestones'
+        context 'when user cannot read project milestones' do
+          before do
+            project.project_feature.update!(merge_requests_access_level: ProjectFeature::PRIVATE)
+            project.project_feature.update!(issues_access_level: ProjectFeature::PRIVATE)
+          end
+
+          it 'returns empty array' do
+            get api('/search', user), params: { scope: 'milestones', search: 'awesome' }
+
+            milestones = JSON.parse(response.body)
+
+            expect(milestones).to be_empty
+          end
+        end
       end
 
       context 'for users scope' do
@@ -318,11 +337,30 @@ describe API::Search do
       context 'for milestones scope' do
         before do
           create(:milestone, project: project, title: 'awesome milestone')
+        end
+
+        context 'when user can read milestones' do
+          before do
+            get api("/projects/#{project.id}/search", user), params: { scope: 'milestones', search: 'awesome' }
+          end
 
-          get api("/projects/#{project.id}/search", user), params: { scope: 'milestones', search: 'awesome' }
+          it_behaves_like 'response is correct', schema: 'public_api/v4/milestones'
         end
 
-        it_behaves_like 'response is correct', schema: 'public_api/v4/milestones'
+        context 'when user cannot read project milestones' do
+          before do
+            project.project_feature.update!(merge_requests_access_level: ProjectFeature::PRIVATE)
+            project.project_feature.update!(issues_access_level: ProjectFeature::PRIVATE)
+          end
+
+          it 'returns empty array' do
+            get api("/projects/#{project.id}/search", user), params: { scope: 'milestones', search: 'awesome' }
+
+            milestones = JSON.parse(response.body)
+
+            expect(milestones).to be_empty
+          end
+        end
       end
 
       context 'for users scope' do

spec/requests/api/system_hooks_spec.rb

 require 'spec_helper'
 
 describe API::SystemHooks do
+  include StubRequests
+
   let(:user) { create(:user) }
   let(:admin) { create(:admin) }
   let!(:hook) { create(:system_hook, url: "http://example.com") }
 
   before do
-    stub_request(:post, hook.url)
+    stub_full_request(hook.url, method: :post)
   end
 
   describe "GET /hooks" do
@@ -68,6 +70,8 @@ describe API::SystemHooks do
     end
 
     it 'sets default values for events' do
+      stub_full_request('http://mep.mep', method: :post)
+
       post api('/hooks', admin), params: { url: 'http://mep.mep' }
 
       expect(response).to have_gitlab_http_status(201)
@@ -78,6 +82,8 @@ describe API::SystemHooks do
     end
 
     it 'sets explicit values for events' do
+      stub_full_request('http://mep.mep', method: :post)
+
       post api('/hooks', admin),
         params: {
           url: 'http://mep.mep',

spec/services/ci/create_pipeline_service_spec.rb

@@ -973,7 +973,7 @@ describe Ci::CreatePipelineService do
             let(:merge_request) do
               create(:merge_request,
                 source_project: project,
-                source_branch: ref_name,
+                source_branch: Gitlab::Git.ref_name(ref_name),
                 target_project: project,
                 target_branch: 'master')
             end
@@ -1004,7 +1004,7 @@ describe Ci::CreatePipelineService do
             let(:merge_request) do
               create(:merge_request,
                 source_project: project,
-                source_branch: ref_name,
+                source_branch: Gitlab::Git.ref_name(ref_name),
                 target_project: project,
                 target_branch: 'master')
             end
@@ -1033,7 +1033,7 @@ describe Ci::CreatePipelineService do
             let(:merge_request) do
               create(:merge_request,
                 source_project: project,
-                source_branch: ref_name,
+                source_branch: Gitlab::Git.ref_name(ref_name),
                 target_project: project,
                 target_branch: 'master')
             end

spec/services/projects/lfs_pointers/lfs_download_service_spec.rb

@@ -2,6 +2,8 @@
 require 'spec_helper'
 
 describe Projects::LfsPointers::LfsDownloadService do
+  include StubRequests
+
   let(:project) { create(:project) }
   let(:lfs_content) { SecureRandom.random_bytes(10) }
   let(:oid) { Digest::SHA256.hexdigest(lfs_content) }
@@ -62,7 +64,7 @@ describe Projects::LfsPointers::LfsDownloadService do
   describe '#execute' do
     context 'when file download succeeds' do
       before do
-        WebMock.stub_request(:get, download_link).to_return(body: lfs_content)
+        stub_full_request(download_link).to_return(body: lfs_content)
       end
 
       it_behaves_like 'lfs object is created'
@@ -104,7 +106,7 @@ describe Projects::LfsPointers::LfsDownloadService do
       let(:size) { 1 }
 
       before do
-        WebMock.stub_request(:get, download_link).to_return(body: lfs_content)
+        stub_full_request(download_link).to_return(body: lfs_content)
       end
 
       it_behaves_like 'no lfs object is created'
@@ -118,7 +120,7 @@ describe Projects::LfsPointers::LfsDownloadService do
 
     context 'when downloaded lfs file has a different oid' do
       before do
-        WebMock.stub_request(:get, download_link).to_return(body: lfs_content)
+        stub_full_request(download_link).to_return(body: lfs_content)
         allow_any_instance_of(Digest::SHA256).to receive(:hexdigest).and_return('foobar')
       end
 
@@ -136,7 +138,7 @@ describe Projects::LfsPointers::LfsDownloadService do
       let(:lfs_object) { LfsDownloadObject.new(oid: oid, size: size, link: download_link_with_credentials) }
 
       before do
-        WebMock.stub_request(:get, download_link).with(headers: { 'Authorization' => 'Basic dXNlcjpwYXNzd29yZA==' }).to_return(body: lfs_content)
+        stub_full_request(download_link).with(headers: { 'Authorization' => 'Basic dXNlcjpwYXNzd29yZA==' }).to_return(body: lfs_content)
       end
 
       it 'the request adds authorization headers' do
@@ -149,7 +151,7 @@ describe Projects::LfsPointers::LfsDownloadService do
       let(:local_request_setting) { true }
 
       before do
-        WebMock.stub_request(:get, download_link).to_return(body: lfs_content)
+        stub_full_request(download_link, ip_address: '192.168.2.120').to_return(body: lfs_content)
       end
 
       it_behaves_like 'lfs object is created'
@@ -173,7 +175,8 @@ describe Projects::LfsPointers::LfsDownloadService do
 
         with_them do
           before do
-            WebMock.stub_request(:get, download_link).to_return(status: 301, headers: { 'Location' => redirect_link })
+            stub_full_request(download_link, ip_address: '192.168.2.120')
+              .to_return(status: 301, headers: { 'Location' => redirect_link })
           end
 
           it_behaves_like 'no lfs object is created'
@@ -184,8 +187,8 @@ describe Projects::LfsPointers::LfsDownloadService do
         let(:redirect_link) { "http://example.com/"}
 
         before do
-          WebMock.stub_request(:get, download_link).to_return(status: 301, headers: { 'Location' => redirect_link })
-          WebMock.stub_request(:get, redirect_link).to_return(body: lfs_content)
+          stub_full_request(download_link).to_return(status: 301, headers: { 'Location' => redirect_link })
+          stub_full_request(redirect_link).to_return(body: lfs_content)
         end
 
         it_behaves_like 'lfs object is created'

spec/services/submit_usage_ping_service_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe SubmitUsagePingService do
+  include StubRequests
+
   context 'when usage ping is disabled' do
     before do
       stub_application_setting(usage_ping_enabled: false)
@@ -99,7 +101,7 @@ describe SubmitUsagePingService do
   end
 
   def stub_response(body)
-    stub_request(:post, 'https://version.gitlab.com/usage_data')
+    stub_full_request('https://version.gitlab.com/usage_data', method: :post)
       .to_return(
         headers: { 'Content-Type' => 'application/json' },
         body: body.to_json

spec/services/web_hook_service_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 describe WebHookService do
+  include StubRequests
+
   let(:project) { create(:project) }
   let(:project_hook) { create(:project_hook) }
   let(:headers) do
@@ -67,11 +69,11 @@ describe WebHookService do
       let(:project_hook) { create(:project_hook, url: 'https://demo:demo@example.org/') }
 
       it 'uses the credentials' do
-        WebMock.stub_request(:post, url)
+        stub_full_request(url, method: :post)
 
         service_instance.execute
 
-        expect(WebMock).to have_requested(:post, url).with(
+        expect(WebMock).to have_requested(:post, stubbed_hostname(url)).with(
           headers: headers.merge('Authorization' => 'Basic ZGVtbzpkZW1v')
         ).once
       end
@@ -82,11 +84,11 @@ describe WebHookService do
       let(:project_hook) { create(:project_hook, url: 'https://demo@example.org/') }
 
       it 'uses the credentials anyways' do
-        WebMock.stub_request(:post, url)
+        stub_full_request(url, method: :post)
 
         service_instance.execute
 
-        expect(WebMock).to have_requested(:post, url).with(
+        expect(WebMock).to have_requested(:post, stubbed_hostname(url)).with(
           headers: headers.merge('Authorization' => 'Basic ZGVtbzo=')
         ).once
       end

spec/support/helpers/stub_requests.rb

+module StubRequests
+  IP_ADDRESS_STUB = '8.8.8.9'.freeze
+
+  # Fully stubs a request using WebMock class. This class also
+  # stubs the IP address the URL is translated to (DNS lookup).
+  #
+  # It expects the final request to go to the `ip_address` instead the given url.
+  # That's primarily a DNS rebind attack prevention of Gitlab::HTTP
+  # (see: Gitlab::UrlBlocker).
+  #
+  def stub_full_request(url, ip_address: IP_ADDRESS_STUB, port: 80, method: :get)
+    stub_dns(url, ip_address: ip_address, port: port)
+
+    url = stubbed_hostname(url, hostname: ip_address)
+    WebMock.stub_request(method, url)
+  end
+
+  def stub_dns(url, ip_address:, port: 80)
+    url = parse_url(url)
+    socket = Socket.sockaddr_in(port, ip_address)
+    addr = Addrinfo.new(socket)
+
+    # See Gitlab::UrlBlocker
+    allow(Addrinfo).to receive(:getaddrinfo)
+                         .with(url.hostname, url.port, nil, :STREAM)
+                         .and_return([addr])
+  end
+
+  def stubbed_hostname(url, hostname: IP_ADDRESS_STUB)
+    url = parse_url(url)
+    url.hostname = hostname
+    url.to_s
+  end
+
+  private
+
+  def parse_url(url)
+    url.is_a?(URI) ? url : URI(url)
+  end
+end