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RedHat: RHSA-2020-5218-01 Moderate: libssh Denial Of Service Security Fix

red hat
Calendar Grey November 24, 2020
Dist Redhat Esm H88
New release for Red Hat Virtualization to tackle moderate vulnerabilities and resolve existing bugs.
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 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: imgbased (1.2.13), redhat-release-virtualization-host (4.4.3), redhat-virtualization-host (4.4.3). (BZ#1814517, BZ#1868293, BZ#1886484)
Security Fix(es):
* libssh: denial of service when handling AES-CTR (or DES) ciphers(CVE-2020-1730)
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.
Bug Fix(es):
* [security] gnutls_set_default_priority() (and thus Cockpit logins) fails when selecting VPP profile during RHVH installation (BZ#1835661)
* Unable to upgrade from rhvh 4.4.1 to 4.4.2 as block storage domains are detected as local storage domains. (BZ#1886647)
* Failed to install RHVH 4.4.3 due to missing Lvm ThinPool (BZ#1886695)

Topics%20covered

Topics Covered

security advisory denial of service Red Hat bug fix Moderate virtualization

References

https://access.redhat.com/security/cve/CVE-2020-1730 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Virtualization 4 Hypervisor for RHEL 8:
Source: redhat-virtualization-host-4.4.3-20201116.0.el8_3.src.rpm
noarch: redhat-virtualization-host-image-update-4.4.3-20201116.0.el8_3.noarch.rpm
RHEL 8-based RHEV-H for RHEV 4 (build requirements):
Source: imgbased-1.2.13-0.1.el8ev.src.rpm redhat-release-virtualization-host-4.4.3-1.el8ev.src.rpm
noarch: imgbased-1.2.13-0.1.el8ev.noarch.rpm python3-imgbased-1.2.13-0.1.el8ev.noarch.rpm redhat-virtualization-host-image-update-placeholder-4.4.3-1.el8ev.noarch.rpm
x86_64: redhat-release-virtualization-host-4.4.3-1.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/


Advisory ID: RHSA-2020:5218-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5218
Issue date: 2020-11-24

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 bug fix Moderate virtualization

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

1801998 - CVE-2020-1730 libssh: denial of service when handling AES-CTR (or DES) ciphers1833254 - Register RHVH 4.4 to Engine will fail when security profile is selected

1868293 - Rebase RHV-H on RHEL 8.3

1886484 - redhat-virtualization-host-productimg rhv anaconda installclass needs rebase on RHEL 8.3 anaconda-33.16.3.*

1886647 - Unable to upgrade from rhvh 4.4.1 to 4.4.2 as block storage domains are detected as local storage domains.

1886695 - Failed to install RHVH 4.4.3 due to missing Lvm ThinPool

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