(RHSA-2021:2437) Moderate: OpenShift Container Platform 4.8.2 packages and 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 4.8.2. See the following advisory for the container images for this release:

https://access.redhat.com/errata/RHSA-2021:2438

Security Fix(es):

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

• golang: crypto/elliptic: incorrect operations on the P-224 curve (CVE-2021-3114)

• openshift: Injected service-ca.crt incorrectly contains additional internal CAs (CVE-2021-3636)

• python-eventlet: improper handling of highly compressed data and memory allocation with excessive size allows DoS (CVE-2021-21419)

• jenkins-2-plugins/matrix-auth: Incorrect permission checks in Matrix Authorization Strategy Plugin (CVE-2021-21623)

• jenkins-2-plugins/credentials: Reflected XSS vulnerability in Credentials Plugin (CVE-2021-21648)

• kubernetes: Validating Admission Webhook does not observe some previous fields (CVE-2021-25735)

• jenkins: lack of type validation in agent related REST API (CVE-2021-21639)

• jenkins: view name validation bypass (CVE-2021-21640)

• kubernetes: Holes in EndpointSlice Validation Enable Host Network Hijack (CVE-2021-25737)

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 4.8 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/4.8/updating/updating-cluster-between-minor.html#understanding-upgrade-channels_updating-cluster-between-minor