/usr/lib/x86_64-linux-gnu/libgsasl.so is in libgsasl7-dev 1.8.0-8ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgsasl.so.7.9.6
/usr/lib/x86_64-linux-gnu/libgsasl.so.7.9.6