An updated zip package has been released for CentOS-3
https://rhn.redhat.com/errata/RHSA-2004-634.html refers
changed files :-
updates/i386/RPMS/zip-2.3-16.1.i386.rpm
updates/i386/SRPMS/zip-2.3-16.1.src.rpm
yum update zip should upgrade your system
These files are on mirror.caosity.org now and should be on local mirrors within a few hours.
