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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: OpenShift Container Platform 4.7.23 security update
Advisory ID:       RHSA-2021:2977-01
Product:           Red Hat OpenShift Enterprise
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:2977
Issue date:        2021-08-11
CVE Names:         CVE-2021-3121 
=====================================================================

1. Summary:

Red Hat OpenShift Container Platform release 4.7.23 is now available with
updates to packages and images that fix several bugs and add enhancements.

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):

* gogo/protobuf: plugin/unmarshal/unmarshal.go lacks certain index
validation (CVE-2021-3121)

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.

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:4.7.23-x86_64

The image digest is
sha256:fb00f5e16a2092c3f15113ad8de0d2e841abdb43c9c39794522fc79784a3efb0

(For s390x architecture)

  $ oc adm release info
quay.io/openshift-release-dev/ocp-release:4.7.23-s390x

The image digest is
sha256:5e633adb1d47cd2c0a000caa02d937074cab4e3b601b99d71368604c3109c632

(For ppc64le architecture)

  $ oc adm release info
quay.io/openshift-release-dev/ocp-release:4.7.23-ppc64le

The image digest is
sha256:7adfc7d4513763ac62700f3d5eb7fd9050b925de8e9ccc5b2bb6dee593522c5a

All OpenShift Container Platform 4.7 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/4.7/updating/updating-cluster
- -between-minor.html#understanding-upgrade-channels_updating-cluster-between
- -minor

3. Solution:

For OpenShift Container Platform 4.7 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/4.7/release_notes/ocp-4-7-rel
ease-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.7/updating/updating-cluster
- -cli.html

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

1921650 - CVE-2021-3121 gogo/protobuf: plugin/unmarshal/unmarshal.go lacks certain index validation
1933726 - Workers fail to PXE boot when IPv6 provisionining network has subnet other than /64
1962036 - sdn-controller is missing some health checks
1970166 - MCO: maxUnavailable of ds/machine-config-daemon does not get updated due to missing resourcemerge check
1975469 - Unable to edit the default Health check probe values
1977432 - CNI DEL not called on node reboot - OCP 4 CRI-O.
1982929 - build cleanup test failing on release-openshift-origin-installer-old-rhcos-e2e-aws-4.7
1985516 - allow-from-router feature doesn't work on v6 only single stack cluster
1985545 - driver-toolkit gcc install unable to download extract-vmlinux script in ART builds
1985546 - Kernel version in /etc/driver-toolkit-release.json not including architecture
1986591 - node exporter calls /proc/cpuinfo multiple times causing the node to freeze

5. References:

https://access.redhat.com/security/cve/CVE-2021-3121
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 2021 Red Hat, Inc.
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