Issued:
2021-08-19
Updated:
2021-08-19

RHSA-2021:3235 - Important: Red Hat Virtualization Host security and bug fix update [ovirt-4.4.7]

Synopsis

Important: Red Hat Virtualization Host security and bug fix update [ovirt-4.4.7]

Type/Severity

Security Advisory Important

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 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, 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):

  • edk2: remote buffer overflow in IScsiHexToBin function in NetworkPkg/IScsiDxe ()

  • kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)

  • kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)

  • sssd: shell command injection in sssctl (CVE-2021-3621)

  • kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)

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):

  • Rebase package(s) to version: 1.2.23

Highlights, important fixes, or notable enhancements:

  • imgbase should not copy the selinux binary policy file (BZ# 1979624) (BZ#1989397)

  • RHV-H has been rebased on Red Hat Enterprise Linux 8.4 Batch #2. (BZ#1975177)

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

ProductVersionArch
Red Hat Virtualization4x86_64
Red Hat Virtualization Host4x86_64

Updated Packages

  • redhat-release-virtualization-host-4.4.7-4.el8ev.src.rpm
  • imgbased-1.2.23-1.el8ev.src.rpm
  • redhat-virtualization-host-4.4.7-20210804.0.el8_4.src.rpm
  • redhat-release-virtualization-host-4.4.7-4.el8ev.x86_64.rpm
  • redhat-virtualization-host-image-update-placeholder-4.4.7-4.el8ev.noarch.rpm
  • python3-imgbased-1.2.23-1.el8ev.noarch.rpm
  • redhat-virtualization-host-image-update-4.4.7-20210804.0.el8_4.x86_64.rpm
  • imgbased-1.2.23-1.el8ev.noarch.rpm

Fixes

CVEs

References

Additional information