CentOS Errata and Security Advisory CEEA-2005:434

https://rhn.redhat.com/errata/RHSA-2005-434.html

(Rebuild from Pasi's src.rpm)
It's the same firefox modified to build for CentOS-3 as the previous provided one is vulnerable too.

The following updated files have been uploaded and are currently syncing to the mirrors:

files:
centosplus/x86_64/RPMS/firefox-1.0.4-1.4.1.centos3.x86_64.rpm

source:
centosplus/x86_64/SRPMS/firefox-1.0.4-1.4.1.centos3.src.rpm