CentOS Errata and Security Advisory 2005:357
https://rhn.redhat.com/errata/RHSA-2005-357.html
The following updated files have been uploaded and are currently syncing to the mirrors:
x86_64: gzip-1.3.3-15.rhel4.x86_64.rpm
src: gzip-1.3.3-15.rhel4.src.rpm