An input validation flaw was found in the way OpenShift handles requests for images. A user, with a copy of the manifest associated with an image, can pull an image even if they do not have access to the image normally, resulting in the disclosure of any information contained within the image.
It is reported that given the manifest data for a container that is not owned by a user that user will still be able to pull the container and access the contents of it.
This issue has been addressed in the following products:
Red Hat OpenShift Enterprise 3.1
Red Hat OpenShift Enterprise 3.2
Red Hat OpenShift Container Platform 3.3
Via RHSA-2016:2915 https://access.redhat.com/errata/RHSA-2016:2915