RHSA-2020:5194 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.5.21 is now available with updates to packages and images that fix several bugs.

This release includes a security update for openshift-enterprise-hyperkube for Red Hat OpenShift Container Platform 4.5.21.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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.openshift.com/container-platform/4.5/release_notes/ocp-4-5-release-notes.html

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
https://docs.openshift.com/container-platform/4.5/updating/updating-cluster-between-minor.html#understanding-upgrade-channels_updating-cluster-between-minor.

Solution

For OpenShift Container Platform 4.5 see the following documentation, which
will be updated shortly for this release, for important instructions on how
to upgrade your cluster and fully apply this asynchronous errata update:

https://docs.openshift.com/container-platform/4.5/release_notes/ocp-4-5-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.5/updating/updating-cluster-cli.html.

Affected Products

• Red Hat OpenShift Container Platform 4.5 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform 4.5 for RHEL 7 x86_64
• Red Hat OpenShift Container Platform for Power 4.5 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for Power 4.5 for RHEL 7 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.5 for RHEL 8 s390x
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.5 for RHEL 7 s390x

Fixes

• BZ - 1828858 - Application behind service load balancer with PDB is not disrupted
• BZ - 1851422 - CVE-2020-8559 kubernetes: compromised node could escalate to cluster level privileges
• BZ - 1879017 - In network dialogs, disable the "model" if "sriov" is selected.
• BZ - 1880341 - [release 4.5] cluster-network-operator: Fix bug in reflector not recovering from "Too large resource version"
• BZ - 1881542 - The marketplace co should recover after other clusterOperators work well when the success ratio meets 0.3
• BZ - 1883412 - cloud-credential upgradeable status didn't immediately respond when we remove or recreate the root creds in mint/passthrough mode
• BZ - 1892372 - operator pod with OLM webhooks is getting terminated and created several times during the installation
• BZ - 1894267 - Provide an ability to turn off rollbackcopier
• BZ - 1895856 - httpSecret should always be set
• BZ - 1897313 - HPA monitoring cpu utilization fails for deployments which have init containers
• BZ - 1899563 - cluster-etcd-operator flooding the logs in steady state

CVEs

• CVE-2020-8559
• CVE-2020-15999

References

• https://access.redhat.com/security/updates/classification/#moderate