Merge branch 'fix-arbitrary-redirect-vulnerability' into 'security-10-0'

app/controllers/projects/application_controller.rb

@@ -2,7 +2,6 @@ class Projects::ApplicationController < ApplicationController
   include RoutableActions
 
   skip_before_action :authenticate_user!
-  before_action :redirect_git_extension
   before_action :project
   before_action :repository
   layout 'project'
@@ -11,15 +10,6 @@ class Projects::ApplicationController < ApplicationController
 
   private
 
-  def redirect_git_extension
-    # Redirect from
-    #   localhost/group/project.git
-    # to
-    #   localhost/group/project
-    #
-    redirect_to url_for(params.merge(format: nil)) if params[:format] == 'git'
-  end
-
   def project
     return @project if @project
     return nil unless params[:project_id] || params[:id]

app/controllers/projects_controller.rb

@@ -3,6 +3,7 @@ class ProjectsController < Projects::ApplicationController
   include ExtractsPath
 
   before_action :authenticate_user!, except: [:index, :show, :activity, :refs]
+  before_action :redirect_git_extension, only: [:show]
   before_action :project, except: [:index, :new, :create]
   before_action :repository, except: [:index, :new, :create]
   before_action :assign_ref_vars, only: [:show], if: :repo_exists?
@@ -390,4 +391,13 @@ class ProjectsController < Projects::ApplicationController
 
     url_for(params)
   end
+
+  def redirect_git_extension
+    # Redirect from
+    #   localhost/group/project.git
+    # to
+    #   localhost/group/project
+    #
+    redirect_to request.original_url.sub(/\.git\/?\Z/, '') if params[:format] == 'git'
+  end
 end

changelogs/unreleased/fix-arbitrary-redirect-vulnerability.yml

+---
+title: Prevent an open redirect on project pages
+merge_request:
+author:
+type: security