When trying to subscribe with Red Hat Subscription Manager or run `yum update`, receives the error "[Errno 14] problem with the local client certificate"

Issue

• When trying to subscribe with Red Hat Subscription Manager or run yum update, receives the error "[Errno 14] problem with the local client certificate"
• Cannot install packages using yum, it complains about a problem with the local client certificate

 yum install php
Loaded plugins: product-id, refresh-packagekit, subscription-manager
Updating Red Hat repositories.
https://cdn.redhat.com/content/dist/rhel/workstation/6/6Workstation/x86_64/os/repodata/repomd.xml: [Errno 14] problem with the local client certificate. Trying other mirror.