/usr/share/php/Auth/ is in php-auth 1.6.2-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Auth/Anonymous.php
/usr/share/php/Auth/Auth.php
/usr/share/php/Auth/Container/
/usr/share/php/Auth/Container.php
/usr/share/php/Auth/Container/Array.php
/usr/share/php/Auth/Container/DB.php
/usr/share/php/Auth/Container/DBLite.php
/usr/share/php/Auth/Container/File.php
/usr/share/php/Auth/Container/IMAP.php
/usr/share/php/Auth/Container/KADM5.php
/usr/share/php/Auth/Container/LDAP.php
/usr/share/php/Auth/Container/MDB.php
/usr/share/php/Auth/Container/MDB2.php
/usr/share/php/Auth/Container/Multiple.php
/usr/share/php/Auth/Container/NetVPOPMaild.php
/usr/share/php/Auth/Container/PEAR.php
/usr/share/php/Auth/Container/POP3.php
/usr/share/php/Auth/Container/RADIUS.php
/usr/share/php/Auth/Container/SAP.php
/usr/share/php/Auth/Container/SMBPasswd.php
/usr/share/php/Auth/Container/SOAP.php
/usr/share/php/Auth/Container/SOAP5.php
/usr/share/php/Auth/Container/vpopmail.php
/usr/share/php/Auth/Controller.php
/usr/share/php/Auth/Frontend/
/usr/share/php/Auth/Frontend/Html.php
/usr/share/php/Auth/Frontend/md5.js