/lib/x86_64-linux-gnu/libgssglue.so.1 is in libgssglue1 0.4-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libgssglue.so.1.0.0
/lib/x86_64-linux-gnu/libgssglue.so.1.0.0