OpenStack Heat Templates (heat-templates), as used in Red Hat Enterprise Linux OpenStack Platform 4.0, sets sslverify to false for certain Yum repositories, which disables SSL protection and allows man-in-the-middle attackers to prevent updates via unspecified vectors.
https://github.com/openstack/heat-templates/commit/65a4f8bebc72da71c616e2e378b7b1ac354db1a3CONFIRM:
https://bugzilla.redhat.com/show_bug.cgi?id=1059515