Updated cups packages are available for CentOS-3
cups: https://rhn.redhat.com/errata/RHSA-2004-543.html
i386/RPMS/cups-devel-1.1.17-13.3.16.i386.rpm
i386/RPMS/cups-1.1.17-13.3.16.i386.rpm
i386/RPMS/cups-libs-1.1.17-13.3.16.i386.rpm
i386/SRPMS/cups-1.1.17-13.3.16.src.rpm
All of these updates can be applied by running the command:
yum update
