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Red Hat Security Advisory 2021-3642-01

Red Hat Security Advisory 2021-3642-01
Posted Sep 29, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3642-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-25741
SHA-256 | e5ea0b25b2d39793003ba5a3c2f5ece3db0e42eeb9158570c160ffde10c19998

Red Hat Security Advisory 2021-3642-01

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====================================================================
Red Hat Security Advisory

Synopsis: Important: OpenShift Container Platform 4.6.46 security update
Advisory ID: RHSA-2021:3642-01
Product: Red Hat OpenShift Enterprise
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3642
Issue date: 2021-09-29
CVE Names: CVE-2021-25741
====================================================================
1. Summary:

Red Hat OpenShift Container Platform release 4.6.46 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 4.6 - 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.

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 4.6 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/4.6/updating/updating-cluster
- -between-minor.html#understanding-upgrade-channels_updating-cluster-between
- -minor

4. 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-rel
ease-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

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 4.6:

Source:
cri-o-1.19.4-2.rhaos4.6.gitea37eea.el7.src.rpm
openshift-4.6.0-202109180038.p0.git.d5ed12c.assembly.stream.el7.src.rpm

x86_64:
cri-o-1.19.4-2.rhaos4.6.gitea37eea.el7.x86_64.rpm
cri-o-debuginfo-1.19.4-2.rhaos4.6.gitea37eea.el7.x86_64.rpm
openshift-hyperkube-4.6.0-202109180038.p0.git.d5ed12c.assembly.stream.el7.x86_64.rpm

Red Hat OpenShift Container Platform 4.6:

Source:
cri-o-1.19.4-2.rhaos4.6.gitea37eea.el8.src.rpm
openshift-4.6.0-202109180038.p0.git.d5ed12c.assembly.stream.el8.src.rpm

ppc64le:
cri-o-1.19.4-2.rhaos4.6.gitea37eea.el8.ppc64le.rpm
cri-o-debuginfo-1.19.4-2.rhaos4.6.gitea37eea.el8.ppc64le.rpm
cri-o-debugsource-1.19.4-2.rhaos4.6.gitea37eea.el8.ppc64le.rpm
openshift-hyperkube-4.6.0-202109180038.p0.git.d5ed12c.assembly.stream.el8.ppc64le.rpm

s390x:
cri-o-1.19.4-2.rhaos4.6.gitea37eea.el8.s390x.rpm
cri-o-debuginfo-1.19.4-2.rhaos4.6.gitea37eea.el8.s390x.rpm
cri-o-debugsource-1.19.4-2.rhaos4.6.gitea37eea.el8.s390x.rpm
openshift-hyperkube-4.6.0-202109180038.p0.git.d5ed12c.assembly.stream.el8.s390x.rpm

x86_64:
cri-o-1.19.4-2.rhaos4.6.gitea37eea.el8.x86_64.rpm
cri-o-debuginfo-1.19.4-2.rhaos4.6.gitea37eea.el8.x86_64.rpm
cri-o-debugsource-1.19.4-2.rhaos4.6.gitea37eea.el8.x86_64.rpm
openshift-hyperkube-4.6.0-202109180038.p0.git.d5ed12c.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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