(RHSA-2021:3009) Moderate: OpenShift Container Platform 4.6.42 security update

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 RPM packages for Red Hat OpenShift Container
Platform 4.6.42. See the following advisory for the container images for
this release:

https://access.redhat.com/errata/RHBA-2021:3008

Security Fix(es):

• net: lookup functions may return invalid host names(CVE-2021-33195)

• net/http/httputil: ReverseProxy forwards connection headers if first one
  is empty (CVE-2021-33197)

• math/big.Rat: may cause a panic or an unrecoverable fatal error if passed
  inputs with very large exponents (CVE-2021-33198)

• crypto/tls: certificate of wrong type is causing TLS client to
  panic(CVE-2021-34558)

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.

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