RHSA-2021:2500 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.6.36 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 Moderate. 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):

• nodejs-handlebars: lookup helper fails to properly validate templates allowing for arbitrary JavaScript execution (CVE-2019-20920)
• nodejs-handlebars: an endless loop while processing specially-crafted templates leads to DoS (CVE-2019-20922)
• nodejs-handlebars: Remote code execution when compiling untrusted compile templates with strict:true option (CVE-2021-23369)
• nodejs-handlebars: Remote code execution when compiling untrusted compile templates with compat:true option (CVE-2021-23383)

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.

Bug Fix(es):

• Setting up Kibana and Elasticsearch replica to 0, Kibana pods are created and indexmanagement jobs (BZ#1942609)

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 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 - 1882256 - CVE-2019-20922 nodejs-handlebars: an endless loop while processing specially-crafted templates leads to DoS
• BZ - 1882260 - CVE-2019-20920 nodejs-handlebars: lookup helper fails to properly validate templates allowing for arbitrary JavaScript execution
• BZ - 1942609 - Setting up Kibana and Elasticsearch replica to 0, Kibana pods are created and indexmanagement jobs
• BZ - 1948761 - CVE-2021-23369 nodejs-handlebars: Remote code execution when compiling untrusted compile templates with strict:true option
• BZ - 1956688 - CVE-2021-23383 nodejs-handlebars: Remote code execution when compiling untrusted compile templates with compat:true option

CVEs

• CVE-2019-20920
• CVE-2019-20922
• CVE-2021-23369
• CVE-2021-23383

References

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