Sicherheit: Mehrere Probleme in Red Hat Virtualization - Pro-Linux

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                   Red Hat Security Advisory

Synopsis:          Important: Red Hat Virtualization Host security update
 [ovirt-4.4.6]
Advisory ID:       RHSA-2021:2522-01
Product:           Red Hat Virtualization
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:2522
Issue date:        2021-06-22
CVE Names:         CVE-2020-24489 CVE-2021-3501 CVE-2021-3560 
                   CVE-2021-27219 
=====================================================================

1. Summary:

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.

2. Relevant releases/architectures:

RHEL 8-based RHEV-H for RHEV 4 (build requirements) - noarch, x86_64
Red Hat Virtualization 4 Hypervisor for RHEL 8 - x86_64

3. 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 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):

* glib: integer overflow in g_bytes_new function on 64-bit platforms due to
an implicit cast from 64 bits to 32 bits (CVE-2021-27219)

* kernel: userspace applications can misuse the KVM API to cause a write of
16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501)

* polkit: local privilege escalation using
polkit_system_bus_name_get_creds_sync() (CVE-2021-3560)

* hw: vt-d related privilege escalation (CVE-2020-24489)

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, systemtap dependencies were not included in the RHV-H
channel. Therefore, systemtap could not be installed.
In this release, the systemtap dependencies have been included in the
channel, resolving the issue. (BZ#1903997)

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/2974891

5. Bugs fixed (https://bugzilla.redhat.com/):

1903997 - Provide systemtap dependencies within RHV-H channel
1929858 - CVE-2021-27219 glib: integer overflow in g_bytes_new function on
 64-bit platforms due to an implicit cast from 64 bits to 32 bits
1950136 - CVE-2021-3501 kernel: userspace applications can misuse the KVM API
 to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run
1961710 - CVE-2021-3560 polkit: local privilege escalation using
 polkit_system_bus_name_get_creds_sync()
1962650 - CVE-2020-24489 hw: vt-d related privilege escalation

6. Package List:

Red Hat Virtualization 4 Hypervisor for RHEL 8:

Source:
redhat-virtualization-host-4.4.6-20210615.0.el8_4.src.rpm

x86_64:
redhat-virtualization-host-image-update-4.4.6-20210615.0.el8_4.x86_64.rpm

RHEL 8-based RHEV-H for RHEV 4 (build requirements):

Source:
redhat-release-virtualization-host-4.4.6-2.el8ev.src.rpm

noarch:
redhat-virtualization-host-image-update-placeholder-4.4.6-2.el8ev.noarch.rpm

x86_64:
redhat-release-virtualization-host-4.4.6-2.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/

7. References:

https://access.redhat.com/security/cve/CVE-2020-24489
https://access.redhat.com/security/cve/CVE-2021-3501
https://access.redhat.com/security/cve/CVE-2021-3560
https://access.redhat.com/security/cve/CVE-2021-27219
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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