Merge branch 'caw-wikicloth-disable-lua-patch' into 'master'

Add patch for WikiCloth Lua Vulnerability

See merge request gitlab-org/gitlab!76174

config/initializers/wikicloth_disable_lua_patch.rb

+# frozen_string_literal: true
+
+require 'wikicloth'
+require 'wikicloth/extensions/lua'
+
+# Adds patch to disable lua support to eliminate vulnerability to injection attack.
+#
+# The maintainers are not releasing new versions, so we need to patch it here.
+#
+# If they ever do release a version which contains a fix for this, then we can remove this file.
+#
+# See: https://gitlab.com/gitlab-org/gitlab/-/issues/345892#note_751107320
+
+# Guard to ensure we remember to delete this patch if they ever release a new version of wikicloth
+# which disables Lua by default or otherwise eliminates all vulnerabilities mentioned in
+# https://gitlab.com/gitlab-org/gitlab/-/issues/345892, including the possibility of an HTML/JS
+# injection attack as mentioned in https://gitlab.com/gitlab-org/gitlab/-/issues/345892#note_751981608
+unless Gem::Version.new(WikiCloth::VERSION) == Gem::Version.new('0.8.1')
+  raise 'New version of WikiCloth detected, please either update the version for this check, ' \
+    'or remove this patch if no longer needed'
+end
+
+module WikiCloth
+  class LuaExtension < Extension
+    protected
+
+    def init_lua
+      @options[:disable_lua] = true
+    end
+  end
+end