Important: RHV-H security update (redhat-virtualization-host) 4.3.23

Topic

An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. 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. 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) from Bugzilla:

• zlib: A flaw found in zlib when compressing (not decompressing) certain inputs (CVE-2018-25032)
• gzip: arbitrary-file-write vulnerability (CVE-2022-1271)
• rsyslog: Heap-based overflow in TCP syslog server (CVE-2022-24903)
• kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-1966)

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) from Bugzilla:

• RHV-H 4.3 has been rebased on RHEL 7.9 batch (BZ#2084444)

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 7 x86_64
• Red Hat Virtualization Host 4 for RHEL 7 x86_64

Fixes

• BZ - 2067945 - CVE-2018-25032 zlib: A flaw found in zlib when compressing (not decompressing) certain inputs
• BZ - 2073310 - CVE-2022-1271 gzip: arbitrary-file-write vulnerability
• BZ - 2081353 - CVE-2022-24903 rsyslog: Heap-based overflow in TCP syslog server
• BZ - 2084444 - Rebase RHV-H 4.3 on RHEL 7.9 batch
• BZ - 2092427 - CVE-2022-1966 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root

CVEs

• CVE-2018-25032
• CVE-2022-1271
• CVE-2022-1966
• CVE-2022-24903

References

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