CentOS Errata and Security Advisory 2005:535
https://rhn.redhat.com/errata/RHSA-2005-535.html
The following updated files have been uploaded and are currently syncing to the mirrors:
x86_64: sudo-1.6.7p5-30.1.1.i386.rpm
src: sudo-1.6.7p5-30.1.1.src.rpm