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Red Hat: RHSA-2021:0976-01 Moderate: Denial Of Service Risk

red hat
Calendar Grey March 23, 2021
Dist Redhat Esm H88
Recent updates for Red Hat Virtualization enhance security measures and increase system performance by resolving multiple known issues.
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

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

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.

Topics%20covered

Topics Covered

security advisory denial of service Red Hat red hat bug fix virtualization virtualization host

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


Severity
important
Lowest
Low
Medium
High
Critical

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

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.

Topics%20covered

Topics Covered

security advisory denial of service Red Hat red hat bug fix virtualization virtualization host

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)

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