From 307692cee8cdd0dbe3e6cf40c1192fcf43910610 Mon Sep 17 00:00:00 2001 From: FloatingGhost Date: Fri, 4 Aug 2023 22:24:32 +0100 Subject: [PATCH] Add unit test for external entity loading --- test/fixtures/xml_external_entities.xml | 3 +++ test/pleroma/web/web_finger_test.exs | 23 +++++++++++++++++++++++ test/pleroma/web/xml_test.exs | 10 ++++++++++ 3 files changed, 36 insertions(+) create mode 100644 test/fixtures/xml_external_entities.xml create mode 100644 test/pleroma/web/xml_test.exs diff --git a/test/fixtures/xml_external_entities.xml b/test/fixtures/xml_external_entities.xml new file mode 100644 index 000000000..d5ff87134 --- /dev/null +++ b/test/fixtures/xml_external_entities.xml @@ -0,0 +1,3 @@ + + ]> +&xxe; diff --git a/test/pleroma/web/web_finger_test.exs b/test/pleroma/web/web_finger_test.exs index fafef54fe..be5e08776 100644 --- a/test/pleroma/web/web_finger_test.exs +++ b/test/pleroma/web/web_finger_test.exs @@ -180,5 +180,28 @@ test "respects xml content-type" do {:ok, _data} = WebFinger.finger("pekorino@pawoo.net") end + + test "refuses to process XML remote entities" do + Tesla.Mock.mock(fn + %{ + url: "https://pawoo.net/.well-known/webfinger?resource=acct:pekorino@pawoo.net" + } -> + {:ok, + %Tesla.Env{ + status: 200, + body: File.read!("test/fixtures/xml_external_entities.xml"), + headers: [{"content-type", "application/xrd+xml"}] + }} + + %{url: "https://pawoo.net/.well-known/host-meta"} -> + {:ok, + %Tesla.Env{ + status: 200, + body: File.read!("test/fixtures/tesla_mock/pawoo.net_host_meta") + }} + end) + + assert :error = WebFinger.finger("pekorino@pawoo.net") + end end end diff --git a/test/pleroma/web/xml_test.exs b/test/pleroma/web/xml_test.exs new file mode 100644 index 000000000..89d4709b6 --- /dev/null +++ b/test/pleroma/web/xml_test.exs @@ -0,0 +1,10 @@ +defmodule Pleroma.Web.XMLTest do + use Pleroma.DataCase, async: true + + alias Pleroma.Web.XML + + test "refuses to load external entities from XML" do + data = File.read!("test/fixtures/xml_external_entities.xml") + assert(:error == XML.parse_document(data)) + end +end