cdn.redhat.com SSL certificate invalid??

I'm trying to do some updates via yum.  The updates were failing so I tried a yum search and got the following error:

https://cdn.redhat.com/content/dist/rhel/workstation/6/6Workstation/i386/os/repodata/repomd.xml: [Errno 14] PYCURL ERROR 77 - "Problem with the SSL CA cert (path? access rights?)"
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: rhel-6-workstation-rpms. Please verify its path and try again
 

I tried to follow the link in Firefox and also received a warning that the certificate for cdn.redhat.com was invalid because it wasn't issued by a trusted authority.  What's the resolution on this?