RHSA-2021:0034 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.5.27 is now available with
updates to packages and images that fix several bugs and add enhancements.

This release also includes a security update for Red Hat OpenShift Container Platform 4.5.

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.

Security Fix(es):

• jenkins-2-plugins/subversion: XML parser is not preventing XML external entity (XXE) attacks (CVE-2020-2304)
• jenkins-2-plugins/mercurial: XML parser is not preventing XML external entity (XXE) attacks (CVE-2020-2305)
• jenkins-2-plugins/mercurial: Missing permission check in an HTTP endpoint could result in information disclosure (CVE-2020-2306)
• jenkins-2-plugins/kubernetes: Jenkins controller environment variables are accessible in Kubernetes Plugin (CVE-2020-2307)
• jenkins-2-plugins/kubernetes: Missing permission check in Kubernetes Plugin allows listing pod templates (CVE-2020-2308)
• jenkins-2-plugins/kubernetes: Missing permission check in Kubernetes Plugin allows enumerating credentials IDs (CVE-2020-2309)
• python-urllib3: CRLF injection via HTTP request method (CVE-2020-26137)

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.

This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.5.27. See the following advisory for the container images for this release:

https://access.redhat.com/errata/RHBA-2021:0033

All OpenShift Container Platform 4.5 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/4.5/updating/updating-cluster-between-minor.html#understanding-upgrade-channels_updating-cluster-between-minor.

Solution

For OpenShift Container Platform 4.5 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/4.5/release_notes/ocp-4-5-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.5/updating/updating-cluster-cli.html.

Affected Products

• Red Hat OpenShift Container Platform 4.5 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform 4.5 for RHEL 7 x86_64
• Red Hat OpenShift Container Platform for Power 4.5 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for Power 4.5 for RHEL 7 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.5 for RHEL 8 s390x
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.5 for RHEL 7 s390x

Fixes

• BZ - 1883632 - CVE-2020-26137 python-urllib3: CRLF injection via HTTP request method
• BZ - 1895939 - CVE-2020-2304 jenkins-2-plugins/subversion: XML parser is not prevententing XML external entity (XXE) attacks
• BZ - 1895940 - CVE-2020-2305 jenkins-2-plugins/mercurial: XML parser is not prevententing XML external entity (XXE) attacks
• BZ - 1895941 - CVE-2020-2306 jenkins-2-plugins/mercurial: Missing permission check in an HTTP endpoint could result in information disclosure
• BZ - 1895945 - CVE-2020-2307 jenkins-2-plugins/kubernetes: Jenkins controller environment variables are accessible in Kubernetes Plugin
• BZ - 1895946 - CVE-2020-2308 jenkins-2-plugins/kubernetes: Missing permission check in Kubernetes Plugin allows listing pod templates
• BZ - 1895947 - CVE-2020-2309 jenkins-2-plugins/kubernetes: Missing permission check in Kubernetes Plugin allows enumerating credentials IDs
• BZ - 1913121 - Placeholder bug for OCP 4.5.z rpm release

CVEs

• CVE-2020-2304
• CVE-2020-2305
• CVE-2020-2306
• CVE-2020-2307
• CVE-2020-2308
• CVE-2020-2309
• CVE-2020-26137

References

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