FreeBSD Security Advisory (FreeBSD-SA-06:26.gtar.asc)

The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-06:26.gtar.asc
Upgrade your system to the appropriate stable release or security branch dated after the correction date
GNU tar (gtar) is a utility to create and extract tape archives, commonly known as tar files. GNU tar is included in FreeBSD 4.x as /usr/bin/tar, and in FreeBSD 5.x as /usr/bin/gtar. Symlinks created using the GNUTYPE_NAMES tar extension can be absolute due to lack of proper sanity checks.