RedHat: RHSA-2021-0976:01 Moderate: Red Hat Virtualization Host security,
Summary
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.
Summary
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
References
https://access.redhat.com/security/cve/CVE-2020-27827 https://access.redhat.com/security/updates/classification/#moderate
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/
Topic
An update for imgbased, redhat-release-virtualization-host andredhat-virtualization-host is now available for Red Hat Virtualization 4for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
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
Bugs Fixed
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)
