Do not allow localhost url redirection in GitHub Integration

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/gitlab/octokit/middleware.rb b/lib/gitlab/octokit/middleware.rb
new file mode 100644
index 00000000000..2f762957d1b
--- /dev/null
+++ b/lib/gitlab/octokit/middleware.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Octokit
+    class Middleware
+      def initialize(app)
+        @app = app
+      end
+
+      def call(env)
+        Gitlab::UrlBlocker.validate!(env[:url], { allow_localhost: allow_local_requests?, allow_local_network: allow_local_requests? })
+
+        @app.call(env)
+      end
+
+      private
+
+      def allow_local_requests?
+        Gitlab::CurrentSettings.allow_local_requests_from_hooks_and_services?
+      end
+    end
+  end
+end