/usr/share/php/Horde/ is in php-horde-auth 2.1.11-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Horde/Auth/
/usr/share/php/Horde/Auth.php
/usr/share/php/Horde/Auth/Auto.php
/usr/share/php/Horde/Auth/Base.php
/usr/share/php/Horde/Auth/Composite.php
/usr/share/php/Horde/Auth/Customsql.php
/usr/share/php/Horde/Auth/Cyrsql.php
/usr/share/php/Horde/Auth/Exception.php
/usr/share/php/Horde/Auth/Ftp.php
/usr/share/php/Horde/Auth/Http/
/usr/share/php/Horde/Auth/Http.php
/usr/share/php/Horde/Auth/Http/Remote.php
/usr/share/php/Horde/Auth/Imap.php
/usr/share/php/Horde/Auth/Ipbasic.php
/usr/share/php/Horde/Auth/Kolab.php
/usr/share/php/Horde/Auth/Ldap.php
/usr/share/php/Horde/Auth/Login.php
/usr/share/php/Horde/Auth/Msad.php
/usr/share/php/Horde/Auth/Pam.php
/usr/share/php/Horde/Auth/Passwd.php
/usr/share/php/Horde/Auth/Peclsasl.php
/usr/share/php/Horde/Auth/Radius.php
/usr/share/php/Horde/Auth/Shibboleth.php
/usr/share/php/Horde/Auth/Smb.php
/usr/share/php/Horde/Auth/Smbclient.php
/usr/share/php/Horde/Auth/Sql.php
/usr/share/php/Horde/Auth/Translation.php
/usr/share/php/Horde/Auth/X509.php