CentOS Errata and Security Advisory 2008:0946
https://rhn.redhat.com/errata/RHSA-2008-0946.html
The following updated files have been uploaded and are currently syncing to the mirrors:
x86_64: ed-0.2-36.el4_7.1.x86_64.rpm
src: ed-0.2-36.el4_7.1.src.rpm