Yum update fails with error "[Errno 14] PYCURL ERROR 77 - "Problem with the SSL CA cert (path? access rights?)""

Issue

• Yum fails with below error:

  $ yum list installed kernel*
  Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
  Not root, certificate-based repositories not updated
  Repo rhel-6-workstation-rpms forced skip_if_unavailable=True due to: /etc/rhsm/ca/redhat-uep.pem
  Repo rhel-6-workstation-rpms forced skip_if_unavailable=True due to: /etc/pki/entitlement/*****- key.pem
  Repo rhel-6-workstation-supplementary-rpms forced skip_if_unavailable=True due to: /etc/rhsm/ca/redhat-uep.pem
  Repo rhel-6-workstation-supplementary-rpms forced skip_if_unavailable=True due to: /etc/pki/entitlement/*****-key.pem
  Repo rhel-6-workstation-optional-rpms forced skip_if_unavailable=True due to: /etc/rhsm/ca/redhat-uep.pem
  Repo rhel-6-workstation-optional-rpms forced skip_if_unavailable=True due to: /etc/pki/entitlement/*****-key.pem
  Repo rhel-6-workstation-rhev-agent-rpms forced skip_if_unavailable=True due to: /etc/rhsm/ca/redhat-uep.pem
  Repo rhel-6-workstation-rhev-agent-rpms forced skip_if_unavailable=True due to: /etc/pki/entitlement/*****-key.pem
  elrepo                                                   | 2.6 kB     00:00
  https://cdn.redhat.com/content/dist/rhel/workstation/6/6Workstation/x86_64/optional/os/repodata/repomd.xml: [Errno 14] PYCURL ERROR 77 - "Problem    with the SSL CA cert (path? access rights?)"
  Trying other mirror.
  https://cdn.redhat.com/content/dist/rhel/workstation/6/6Workstation/x86_64/rhev-agent/3/os/repodata/repomd.xml: [Errno 14] PYCURL ERROR 77 - "Problem with the SSL CA cert (path? access rights?)"
  Trying other mirror.
  https://cdn.redhat.com/content/dist/rhel/workstation/6/6Workstation/x86_64/os/repodata/repomd.xml: [Errno 14] PYCURL ERROR 77 - "Problem with the SSL CA cert (path? access rights?)"
  Trying other mirror.
  https://cdn.redhat.com/content/dist/rhel/workstation/6/6Workstation/x86_64/supplementary/os/repodata/repomd.xml: [Errno 14] PYCURL ERROR 77 - "Problem with the SSL CA cert (path? access rights?)"
  Trying other mirror.
  Error: No matching Packages to list