/usr/lib/x86_64-linux-gnu/mit-krb5/libkrb5.so is in krb5-multidev 1.15-1+deb9u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/mit-krb5/../libkrb5.so.3.3
/usr/lib/x86_64-linux-gnu/mit-krb5/../libkrb5.so.3.3