This file is indexed.

/etc/mediawiki-extensions/extensions-available/FancyCaptcha.php is in mediawiki 1:1.19.20+dfsg-0+deb7u3.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/share/mediawiki/extensions-core/ConfirmEdit/FancyCaptcha.php