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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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