/usr/lib/libccgnu2.so is in libcommoncpp2-dev 1.7.3-1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libccgnu2-1.7.so.0.0.3
/usr/lib/libccgnu2-1.7.so.0.0.3