/var/lib/mediawiki/ is in mediawiki 1:1.19.20+dfsg-0+deb7u3.
This file is owned by root:root, with mode 0o755.
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/var/lib/mediawiki/AdminSettings.php
/var/lib/mediawiki/LocalSettings.php
/var/lib/mediawiki/api.php
/var/lib/mediawiki/cache/
/var/lib/mediawiki/cache/.htaccess
/var/lib/mediawiki/config/
/var/lib/mediawiki/extensions/
/var/lib/mediawiki/extensions/ConfirmEdit
/var/lib/mediawiki/extensions/Gadgets
/var/lib/mediawiki/extensions/Nuke
/var/lib/mediawiki/extensions/ParserFunctions
/var/lib/mediawiki/extensions/Renameuser
/var/lib/mediawiki/extensions/Vector
/var/lib/mediawiki/extensions/WikiEditor
/var/lib/mediawiki/images/
/var/lib/mediawiki/images/.htaccess
/var/lib/mediawiki/images/README
/var/lib/mediawiki/img_auth.php
/var/lib/mediawiki/includes
/var/lib/mediawiki/index.php
/var/lib/mediawiki/languages
/var/lib/mediawiki/load.php
/var/lib/mediawiki/maintenance
/var/lib/mediawiki/mw-config
/var/lib/mediawiki/opensearch_desc.php
/var/lib/mediawiki/profileinfo.php
/var/lib/mediawiki/redirect.php
/var/lib/mediawiki/redirect.phtml
/var/lib/mediawiki/resources
/var/lib/mediawiki/skins
/var/lib/mediawiki/thumb.php
/var/lib/mediawiki/thumb_handler.php
/var/lib/mediawiki/wiki.phtml