/usr/lib/sudo/libsudo_util.so.0 is in sudo-ldap 1.8.21p2-3ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/sudo/libsudo_util.so.0.0.0
/usr/lib/sudo/libsudo_util.so.0.0.0