OpenShift 4.5.21 Security Advisory: CVE-2020-8559 Privilege Escalation Risk

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.
Security Fix(es):
* kubernetes: compromised node could escalate to cluster level privileges (CVE-2020-8559)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
This advisory contains the container images for Red Hat OpenShift Container Platform 4.5.21. See the following advisory for the RPM packages for this release:
https://access.redhat.com/errata/RHBA-2020:5193
Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes:
https://docs.redhat.com/en/documentation/openshift_container_platform/4.5/html/release_notes/ocp-4-5-release-notes
This update fixes the following bug among others:
* Previously, the Image Registry Operator did not generate the `httpSecret` when it was empty. This caused the `httpSecret` to not be set correctly. Now, the Operator generates the `httpSecret` and uses it for all replicas when the configuration file is created. (BZ#1895856)
You may download the oc tool and use it to inspect release image metadata as follows:
(For x86_64 architecture)
$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.5.21-x86_64
The image digest is sha256:7684a3daa92827b313a682b3615f2a348a941f8557b5b509b736226f40e01e07
(For s390x architecture)
$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.5.21-s390x
The image digest is sha256:6e73d6be6b76ac33c715b58bdcc4691469d2813282c0b34cf6918836a4b9f678
(For ppc64le architecture)
$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.5.21-ppc64le
The image digest is sha256:168d64a254b218ece47554ff2fc175714d9fcbe8b45136c6d4587fef317bc962
All OpenShift Container Platform 4.5 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift Console or the CLI oc command. Instructions for upgrading a cluster are available at - -between-minor.html#understanding-upgrade-channels_updating-cluster-between - -minor.