These are the libraries from Rob Mars' HFS Utilities. These libraries provide routines for programs to access HFS (Apple Macintosh) partitions, including routines to access and manipulate "resource forks". The HFS Utilities command line tools and GUI themselves may be found in the sysutils/hfsutils and sysutils/xhfs packages, respectively.
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.