Issued:
2021-02-08
Updated:
2021-02-08

RHSA-2021:0308 - Important: OpenShift Container Platform 4.6.16 security and bug fix update

Synopsis

Important: OpenShift Container Platform 4.6.16 security and bug fix update

Type/Severity

Security Advisory Important

Topic

Red Hat OpenShift Container Platform release 4.6.16 is now available with updates to packages and images that fix several bugs.

Red Hat Product Security has rated this update as having a security impact of Important. 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.

This advisory contains the container images for Red Hat OpenShift Container Platform 4.6.16. See the following advisory for the RPM packages for this release:

https://access.redhat.com/errata/RHBA-2021:0309

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/4.6/release_notes/ocp-4-6-release-notes.html

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:4.6.16-x86_64

The image digest is sha256:3e855ad88f46ad1b7f56c312f078ca6adaba623c5d4b360143f9f82d2f349741

(For s390x architecture)

$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.6.16-s390x

The image digest is sha256:2335685cda334ecf9e12c056b148c483fb81412fbfc96c885dc669d775e1f1ee

(For ppc64le architecture)

$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.6.16-ppc64le

The image digest is sha256:953ccacf79467b3e8ebfb8def92013f1574d75e24b3ea9a455aa8931f7f17b88

All OpenShift Container Platform 4.6 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 This page is not included, but the link has been rewritten to point to the nearest parent document.https://docs.openshift.com/container-platform/4.6/updating/updating-cluster-between-minor.html#understanding-upgrade-channels_updating-cluster-between-minor.

Security Fix(es):

  • SSL/TLS: Birthday attack against 64-bit block ciphers (SWEET32) (CVE-2016-2183)

  • openshift/builder: privilege escalation during container image builds via mounted secrets (CVE-2021-3344)

  • openshift/installer: Bootstrap nodes allow anonymous authentication on kubelet port 10250 (CVE-2021-20198)

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.

Solution

For OpenShift Container Platform 4.6 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/4.6/release_notes/ocp-4-6-release-notes.html

Details on how to access this content are available at This page is not included, but the link has been rewritten to point to the nearest parent document.https://docs.openshift.com/container-platform/4.6/updating/updating-cluster-cli.html.

Affected Products

ProductVersionArch
Red Hat OpenShift Container Platform4.6x86_64
Red Hat OpenShift Container Platform for Power4.6ppc64le
Red Hat OpenShift Container Platform for IBM Z and LinuxONE4.6s390x

Fixes

CVEs

References

Additional information