/usr/lib/x86_64-linux-gnu/libassa-3.5.so is in libassa-3.5-5-dev 3.5.1-6build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libassa-3.5.so.5.0.1
/usr/lib/x86_64-linux-gnu/libassa-3.5.so.5.0.1