CentOS Errata and Security Advisory 2008:0863
https://rhn.redhat.com/errata/RHSA-2008-0863.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390: updates/s390/RPMS/libtiff-3.5.7-31.el3.s390.rpm updates/s390/RPMS/libtiff-devel-3.5.7-31.el3.s390.rpm
s390x: updates/s390x/RPMS/libtiff-3.5.7-31.el3.s390x.rpm updates/s390x/RPMS/libtiff-devel-3.5.7-31.el3.s390x.rpm