RHSA-2021:2239 - Security Advisory

Topic

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.

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 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.

Security Fix(es):

• python-cryptography: bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)
• krb5: unbounded recursion via an ASN.1-encoded Kerberos message in lib/krb5/asn.1/asn1_encode.c may lead to DoS (CVE-2020-28196)
• python-cryptography: certain sequences of update() calls when symmetrically encrypting very large payloads could result in an integer overflow and lead to buffer overflows (CVE-2020-36242)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• Previously, old RPM files were not properly removed during package removal (uninistall) or upgrade. As a result, removed packages were reinstalled, or, during and upgrade, the system tried to install two or more different versions at once, causing the upgrade to fail.

In this release, the dnf plugin has been fixed, and RPM packages are now properly removed.
The new version will also auto-heal the broken system by removing RPM packages which are not supposed to be in the persisted-rpms directory. (BZ#1936972)

• With this release, ovirt-hosted-engine-ha supports multiple, comma-separated values for all iSCSI configuration items. (BZ#1909888)

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

Affected Products

• Red Hat Virtualization 4 for RHEL 8 x86_64
• Red Hat Virtualization Host 4 for RHEL 8 x86_64

Fixes

• BZ - 1779052 - RHVH 4.4: AVC denied errors (dac_override) in audit.log
• BZ - 1882542 - [downstream] Failed to assign network to Infiniband Bond
• BZ - 1889988 - CVE-2020-25659 python-cryptography: bleichenbacher timing oracle attack against RSA decryption
• BZ - 1897893 - RHVH does not keep the same IPv6 address on each reprovision
• BZ - 1901041 - CVE-2020-28196 krb5: unbounded recursion via an ASN.1-encoded Kerberos message in lib/krb5/asn.1/asn1_encode.c may lead to DoS
• BZ - 1901878 - Rebase RHV-H on RHEL 8.4
• BZ - 1909888 - [RFE] Support multiple IQN in hosted-engine.conf for Active-Active DR setup
• BZ - 1926226 - CVE-2020-36242 python-cryptography: certain sequences of update() calls when symmetrically encrypting very large payloads could result in an integer overflow and lead to buffer overflows
• BZ - 1931443 - After reboot a RHV-H host fails to boot displaying error: ../../grub-core/loader/i386/pc/linux.c:170:invalid magic number
• BZ - 1936972 - [RHVH] Failed to reinstall persisted RPMs
• BZ - 1938925 - RHV-H iso needs to include NetworkManager-1.26.0-12.el8_3 or later.
• BZ - 1942580 - End User License Agreement trademarks Shadowman but not new logo
• BZ - 1944632 - Rebase RHV-H 4.4.6 on FDP 2.11 21.C
• BZ - 1946095 - "No valid network interface has been found" when starting HE deployment via cockpit
• BZ - 1948944 - RHVH 4.4.6 ISO (RHVH-4.4-20210412.3-RHVH-x86_64-dvd1.iso) installation failed
• BZ - 1949431 - The directory of EULA presented on the UI is incorrect
• BZ - 1957604 - oVirt logo appears in RHV-H under the virtualization tab

CVEs

• CVE-2020-25659
• CVE-2020-28196
• CVE-2020-36242

References

• https://access.redhat.com/security/updates/classification/#moderate