[CentOS] Equivalent RHEL package for CentOS httpd package?

I'm trying to find out if a particular RedHat patch has been ported to
CentOS yet.

In particular, this vulnerability: CVE-2011-3607

According to this: https://rhn.redhat.com/errata/RHSA-2012-0323.html it
has been patched as of httpd-2.2.3-63.el5_8.1.x86_64.rpm

Now, in the latest CentOS repository, I find
httpd-2.2.3-63.el5.centos.1.x86_64.rpm

Is this the same (or later) release?  I suspect not, because the el5 !=
el5_8.1, but I'm not 100% sure I understand the mapping between the two
sets of RPM names.


Thanks,
   -- Mitch Patenaude     mpatenaude at shutterfly.com