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Red Hat Security Advisory

Synopsis:          Moderate: OpenShift Container Platform 4.5.21 bug fix and security update
Advisory ID:       RHSA-2020:5194-01
Product:           Red Hat OpenShift Enterprise
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:5194
Issue date:        2020-12-01
CVE Names:         CVE-2020-8559 CVE-2020-15999
====================================================================
1. Summary:

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.

2. 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-rel
ease-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.

3. 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-rel
ease-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.

4. Bugs fixed (https://bugzilla.redhat.com/):

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

5. References:

https://access.redhat.com/security/cve/CVE-2020-8559
https://access.redhat.com/security/cve/CVE-2020-15999
https://access.redhat.com/security/updates/classification/#moderate

6. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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