/usr/lib/libuno_cppuhelpergcc3.so.3 is in uno-libs3 3.5.2-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ure/lib/libuno_cppuhelpergcc3.so.3
/usr/lib/ure/lib/libuno_cppuhelpergcc3.so.3