RHSA-2021:0956 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.6.23 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 Low. 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

ed 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 RPM packages for Red Hat OpenShift Container
Platform 4.6.23. See the following advisory for the container images for
this release:

https://access.redhat.com/errata/RHBA-2021:0952

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
https://docs.openshift.com/container-platform/4.6/updating/updating-cluster

• between-minor.html#understanding-upgrade-channels_updating-cluster-between
• minor.

Security Fix(es):

• golang: data race in certain net/http servers including ReverseProxy can lead to DoS (CVE-2020-15586)
• golang: ReadUvarint and ReadVarint can read an unlimited number of bytes from invalid inputs (CVE-2020-16845)

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
https://docs.openshift.com/container-platform/4.6/updating/updating-cluster-cli.html.

Affected Products

• Red Hat OpenShift Container Platform 4.6 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform 4.6 for RHEL 7 x86_64
• Red Hat OpenShift Container Platform for Power 4.6 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.6 for RHEL 8 s390x

Fixes

• BZ - 1856953 - CVE-2020-15586 golang: data race in certain net/http servers including ReverseProxy can lead to DoS
• BZ - 1867099 - CVE-2020-16845 golang: ReadUvarint and ReadVarint can read an unlimited number of bytes from invalid inputs
• BZ - 1941433 - Placeholder bug for OCP 4.6.0 rpm release

CVEs

• CVE-2020-15586
• CVE-2020-16845
• CVE-2020-28362

References

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