RHSA-2021:3759: Moderate: OpenShift Container Platform 4.9.0 bug fix 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 container images for Red Hat OpenShift Container Platform 4.9.0. See the following advisory for the RPM packages for this release:https://access.redhat.com/errata/RHSA-2021:3758 Security Fix(es): gogo/protobuf: plugin/unmarshal/unmarshal.go lacks certain index validation (CVE-2021-3121) sanitize-html: improper handling of internationalized domain name (IDN) can lead to bypass hostname whitelist validation (CVE-2021-26539) sanitize-html: improper validation of hostnames set by the "allowedIframeHostnames" option can lead to bypass hostname whitelist for iframe element (CVE-2021-26540) nodejs-is-svg: ReDoS via malicious string (CVE-2021-28092) nodejs-is-svg: Regular expression denial of service if the application is provided and checks a crafted invalid SVG string (CVE-2021-29059) golang: net/http: panic in ReadRequest and ReadResponse when reading a very large header (CVE-2021-31525) helm: information disclosure vulnerability (CVE-2021-32690) golang: x/net/html: infinite loop in ParseFragment (CVE-2021-33194) golang: net: lookup functions may return invalid host names (CVE-2021-33195) golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty (CVE-2021-33197) golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents (CVE-2021-33198) golang: 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.Additional Changes:This update also fixes several bugs and adds various enhancements. Documentation for these changes is available from the Release Notes document linked to in the References section.You may download the oc tool and use it to inspect release image metadata as follows:(For x8664 architecture)$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.9.0-x8664The image digest is sha256:d262a12de33125907e0b75a5ea34301dd27c4a6bde8295f6b922411f07623e61(For s390x architecture)$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.9.0-s390xThe image digest is sha256:d262a12de33125907e0b75a5ea34301dd27c4a6bde8295f6b922411f07623e61(For ppc64le architecture)$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.9.0-ppc64leThe image digest is sha256:d262a12de33125907e0b75a5ea34301dd27c4a6bde8295f6b922411f07623e61All OpenShift Container Platform 4.9 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 availableat https://docs.openshift.com/container-platform/4.9/updating/updating-cluster-between-minor.html#understanding-upgrade-channelsupdating-cluster-between-minor