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AUSCERT External Security Bulletin Redistribution
ESB-2021.3228
OpenShift Container Platform 4.8.13 security update
28 September 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: OpenShift Container Platform 4.8.13
Publisher: Red Hat
Operating System: Red Hat
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Access Confidential Data -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-25741
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:3631
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running kubernetes check for an updated version of the software for
their operating system.
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Red Hat Security Advisory
Synopsis: Important: OpenShift Container Platform 4.8.13 security update
Advisory ID: RHSA-2021:3631-01
Product: Red Hat OpenShift Enterprise
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3631
Issue date: 2021-09-27
CVE Names: CVE-2021-25741
=====================================================================
1. Summary:
Red Hat OpenShift Container Platform release 4.8.13 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 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.
2. Relevant releases/architectures:
Red Hat OpenShift Container Platform 4.8 - noarch, ppc64le, s390x, x86_64
3. Description:
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 4.8.13. See the following advisory for the container images for
this release:
https://access.redhat.com/errata/RHSA-2021:3632
Security Fix(es):
* kubernetes: Symlink exchange can allow host filesystem access
(CVE-2021-25741)
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
4. Solution:
For OpenShift Container Platform 4.8 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/4.8/release_notes/ocp-4-8-rel
ease-notes.html
Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.8/updating/updating-cluster
- - -cli.html
5. Bugs fixed (https://bugzilla.redhat.com/):
1993749 - CVE-2021-25741 kubernetes: Symlink exchange can allow host filesystem access
6. Package List:
Red Hat OpenShift Container Platform 4.8:
Source:
openshift-4.8.0-202109180335.p0.git.a620f50.assembly.stream.el7.src.rpm
openshift-clients-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el7.src.rpm
x86_64:
openshift-clients-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el7.x86_64.rpm
openshift-clients-redistributable-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el7.x86_64.rpm
openshift-hyperkube-4.8.0-202109180335.p0.git.a620f50.assembly.stream.el7.x86_64.rpm
Red Hat OpenShift Container Platform 4.8:
Source:
openshift-4.8.0-202109180335.p0.git.a620f50.assembly.stream.el8.src.rpm
openshift-clients-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el8.src.rpm
python-sushy-3.7.3-0.20210804111215.b76050c.el8.src.rpm
noarch:
python3-sushy-3.7.3-0.20210804111215.b76050c.el8.noarch.rpm
python3-sushy-tests-3.7.3-0.20210804111215.b76050c.el8.noarch.rpm
ppc64le:
openshift-clients-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el8.ppc64le.rpm
openshift-hyperkube-4.8.0-202109180335.p0.git.a620f50.assembly.stream.el8.ppc64le.rpm
s390x:
openshift-clients-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el8.s390x.rpm
openshift-hyperkube-4.8.0-202109180335.p0.git.a620f50.assembly.stream.el8.s390x.rpm
x86_64:
openshift-clients-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el8.x86_64.rpm
openshift-clients-redistributable-4.8.0-202109201328.p0.git.88e7eba.assembly.stream.el8.x86_64.rpm
openshift-hyperkube-4.8.0-202109180335.p0.git.a620f50.assembly.stream.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2021-25741
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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