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AUSCERT External Security Bulletin Redistribution
ESB-2021.0999
Red Hat Virtualization Host security, bug fix and
enhancement update (4.4.4-2)
24 March 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Virtualization Host
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-27827
Reference: ESB-2021.0907
ESB-2021.0639
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:0976
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Red Hat Security Advisory
Synopsis: Moderate: Red Hat Virtualization Host security, bug fix and enhancement update (4.4.4-2)
Advisory ID: RHSA-2021:0976-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0976
Issue date: 2021-03-23
CVE Names: CVE-2020-27827
=====================================================================
1. Summary:
An update for imgbased, redhat-release-virtualization-host and
redhat-virtualization-host is now available for Red Hat Virtualization 4
for Red Hat Enterprise Linux 8.
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.
2. Relevant releases/architectures:
RHEL 8-based RHEV-H for RHEV 4 (build requirements) - noarch, x86_64
Red Hat Virtualization 4 Hypervisor for RHEL 8 - noarch
3. Description:
The redhat-virtualization-host packages provide the Red Hat Virtualization
Host. These packages include redhat-release-virtualization-host,
ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are
installed using a special build of Red Hat Enterprise Linux with only the
packages required to host virtual machines. RHVH features a Cockpit user
interface for monitoring the host's resources and performing administrative
tasks.
The ovirt-node-ng packages provide the Red Hat Virtualization Host. These
packages include redhat-release-virtualization-host, ovirt-node, and
rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a
special build of Red Hat Enterprise Linux with only the packages required
to host virtual machines. RHVH features a Cockpit user interface for
monitoring the host's resources and performing administrative tasks.
The following packages have been upgraded to a later upstream version:
redhat-release-virtualization-host (4.4.4), redhat-virtualization-host
(4.4.4)
Changes to the imgbased component:
* Previously, the chronyd symlink was removed during the upgrade process.
As a result, the chronyd service was disabled following the upgrade.
In this release, the chronyd service is enabled after upgrade. (BZ#1903777)
Security Fix(es):
* lldp/openvswitch: denial of service via externally triggered memory leak
(CVE-2020-27827)
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.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/2974891
5. Bugs fixed (https://bugzilla.redhat.com/):
1903777 - chronyd is disabled after upgrading RHV-H 4.4.2 -> 4.4.3
1915877 - Rebase RHV-H 4.4.4 on RHEL 8.3.1
1916659 - Upgrade imgbased to 1.2.16
1921438 - CVE-2020-27827 lldp/openvswitch: denial of service via externally triggered memory leak
1932763 - Rebase RHV-H 4.4.4 on FDP 2.11 (21B)
6. Package List:
Red Hat Virtualization 4 Hypervisor for RHEL 8:
Source:
redhat-virtualization-host-4.4.4-20210307.0.el8_3.src.rpm
noarch:
redhat-virtualization-host-image-update-4.4.4-20210307.0.el8_3.noarch.rpm
RHEL 8-based RHEV-H for RHEV 4 (build requirements):
Source:
redhat-release-virtualization-host-4.4.4-2.el8ev.src.rpm
noarch:
redhat-virtualization-host-image-update-placeholder-4.4.4-2.el8ev.noarch.rpm
x86_64:
redhat-release-virtualization-host-4.4.4-2.el8ev.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-2020-27827
https://access.redhat.com/security/updates/classification/#moderate
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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