/etc/kohana2/system/config/ is in libkohana2-php 2.3.4-2.
This file is owned by root:root, with mode 0o755.
..
/etc/kohana2/system/config/cache.php
/etc/kohana2/system/config/cache_memcache.php
/etc/kohana2/system/config/cache_sqlite.php
/etc/kohana2/system/config/cache_xcache.php
/etc/kohana2/system/config/captcha.php
/etc/kohana2/system/config/cookie.php
/etc/kohana2/system/config/credit_cards.php
/etc/kohana2/system/config/database.php
/etc/kohana2/system/config/email.php
/etc/kohana2/system/config/encryption.php
/etc/kohana2/system/config/http.php
/etc/kohana2/system/config/image.php
/etc/kohana2/system/config/inflector.php
/etc/kohana2/system/config/locale.php
/etc/kohana2/system/config/mimes.php
/etc/kohana2/system/config/pagination.php
/etc/kohana2/system/config/profiler.php
/etc/kohana2/system/config/routes.php
/etc/kohana2/system/config/session.php
/etc/kohana2/system/config/sql_types.php
/etc/kohana2/system/config/upload.php
/etc/kohana2/system/config/user_agents.php
/etc/kohana2/system/config/view.php