A Red Hat Virtualization Host security bug fix and enhancement update has been released for Red Hat Enterprise Linux 8.

RHSA-2021:0401-01: Important: Red Hat Virtualization Host security bug fix and enhancement update ovirt-4.4.4:

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Red Hat Security Advisory

Synopsis: Important: Red Hat Virtualization Host security bug fix and enhancement update [ovirt-4.4.4]
Advisory ID: RHSA-2021:0401-01
Product: Red Hat Virtualization
Advisory URL:   https://access.redhat.com/errata/RHSA-2021:0401
Issue date: 2021-02-03
CVE Names: CVE-2020-25684 CVE-2020-25685 CVE-2020-25686
CVE-2021-3156
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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 - noarch, x86_64
Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - noarch

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.

Security Fix(es):

* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)

* dnsmasq: loose address/port check in reply_query() makes forging replies
easier for an off-path attacker (CVE-2020-25684)

* dnsmasq: loose query name check in reply_query() makes forging replies
easier for an off-path attacker (CVE-2020-25685)

* dnsmasq: multiple queries forwarded for the same name makes forging
replies easier for an off-path attacker (CVE-2020-25686)

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):

* Previously, the Red Hat Virtualization Host (RHV-H) repository
(rhvh-4-for-rhel-8-x86_64-rpms) did not include the libsmbclient package,
which is a dependency for the sssd-ad package. Consequently, the sssd-ad
package failed to install.

With this update, the libsmbclient is now in the RHV-H repository, and
sssd-ad now installs on RHV-H. (BZ#1868967)

4. 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

After installing this update, the smb service will be restarted
automatically.

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

1850939 - Hosted engine deployment does not properly show iSCSI LUN errors
1868967 - sssd-ad installation fails on RHV-H 4.4 due to missing libsmbclient from samba package in rhvh-4-for-rhel-8-x86_64-rpms channel
1889686 - CVE-2020-25684 dnsmasq: loose address/port check in reply_query() makes forging replies easier for an off-path attacker
1889688 - CVE-2020-25685 dnsmasq: loose query name check in reply_query() makes forging replies easier for an off-path attacker
1890125 - CVE-2020-25686 dnsmasq: multiple queries forwarded for the same name makes forging replies easier for an off-path attacker
1902315 - Rebase RHV-H 4.4 to RHV 4.4.4
1902646 - ssh connection fails due to overly permissive openssh.config file permissions
1909644 - HE deploy failed with "Failed to download metadata for repo 'rhel-8-for-x86_64-baseos-beta-rpms': Cannot download repomd.xml
1917684 - CVE-2021-3156 sudo: Heap buffer overflow in argument parsing
1921553 - RHVH upgrade to the latest 4.4.4-1 build will fail due to FileNotFoundError
1923126 - Hosted Engine setup fails on storage selection - Retrieval of iSCSI targets failed.

6. Package List:

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts:

Source:
cockpit-ovirt-0.14.17-1.el8ev.src.rpm

noarch:
cockpit-ovirt-dashboard-0.14.17-1.el8ev.noarch.rpm

Red Hat Virtualization 4 Hypervisor for RHEL 8:

Source:
redhat-virtualization-host-4.4.4-20210201.0.el8_3.src.rpm
samba-4.12.3-12.el8.3.src.rpm
sssd-2.3.0-9.el8.src.rpm

noarch:
python3-sssdconfig-2.3.0-9.el8.noarch.rpm
redhat-virtualization-host-image-update-4.4.4-20210201.0.el8_3.noarch.rpm

x86_64:
libipa_hbac-2.3.0-9.el8.x86_64.rpm
libipa_hbac-debuginfo-2.3.0-9.el8.x86_64.rpm
libsmbclient-4.12.3-12.el8.3.x86_64.rpm
libsmbclient-debuginfo-4.12.3-12.el8.3.x86_64.rpm
libsss_autofs-2.3.0-9.el8.x86_64.rpm
libsss_autofs-debuginfo-2.3.0-9.el8.x86_64.rpm
libsss_certmap-2.3.0-9.el8.x86_64.rpm
libsss_certmap-debuginfo-2.3.0-9.el8.x86_64.rpm
libsss_idmap-2.3.0-9.el8.x86_64.rpm
libsss_idmap-debuginfo-2.3.0-9.el8.x86_64.rpm
libsss_nss_idmap-2.3.0-9.el8.x86_64.rpm
libsss_nss_idmap-debuginfo-2.3.0-9.el8.x86_64.rpm
libsss_nss_idmap-devel-2.3.0-9.el8.x86_64.rpm
libsss_simpleifp-2.3.0-9.el8.x86_64.rpm
libsss_simpleifp-debuginfo-2.3.0-9.el8.x86_64.rpm
libsss_sudo-2.3.0-9.el8.x86_64.rpm
libsss_sudo-debuginfo-2.3.0-9.el8.x86_64.rpm
python3-libipa_hbac-2.3.0-9.el8.x86_64.rpm
python3-libipa_hbac-debuginfo-2.3.0-9.el8.x86_64.rpm
python3-libsss_nss_idmap-2.3.0-9.el8.x86_64.rpm
python3-libsss_nss_idmap-debuginfo-2.3.0-9.el8.x86_64.rpm
python3-sss-2.3.0-9.el8.x86_64.rpm
python3-sss-debuginfo-2.3.0-9.el8.x86_64.rpm
python3-sss-murmur-2.3.0-9.el8.x86_64.rpm
python3-sss-murmur-debuginfo-2.3.0-9.el8.x86_64.rpm
samba-debuginfo-4.12.3-12.el8.3.x86_64.rpm
samba-debugsource-4.12.3-12.el8.3.x86_64.rpm
sssd-2.3.0-9.el8.x86_64.rpm
sssd-ad-2.3.0-9.el8.x86_64.rpm
sssd-ad-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-client-2.3.0-9.el8.x86_64.rpm
sssd-client-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-common-2.3.0-9.el8.x86_64.rpm
sssd-common-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-common-pac-2.3.0-9.el8.x86_64.rpm
sssd-common-pac-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-dbus-2.3.0-9.el8.x86_64.rpm
sssd-dbus-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-debugsource-2.3.0-9.el8.x86_64.rpm
sssd-ipa-2.3.0-9.el8.x86_64.rpm
sssd-ipa-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-kcm-2.3.0-9.el8.x86_64.rpm
sssd-kcm-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-krb5-2.3.0-9.el8.x86_64.rpm
sssd-krb5-common-2.3.0-9.el8.x86_64.rpm
sssd-krb5-common-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-krb5-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-ldap-2.3.0-9.el8.x86_64.rpm
sssd-ldap-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-libwbclient-2.3.0-9.el8.x86_64.rpm
sssd-libwbclient-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-nfs-idmap-2.3.0-9.el8.x86_64.rpm
sssd-nfs-idmap-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-polkit-rules-2.3.0-9.el8.x86_64.rpm
sssd-proxy-2.3.0-9.el8.x86_64.rpm
sssd-proxy-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-tools-2.3.0-9.el8.x86_64.rpm
sssd-tools-debuginfo-2.3.0-9.el8.x86_64.rpm
sssd-winbind-idmap-2.3.0-9.el8.x86_64.rpm
sssd-winbind-idmap-debuginfo-2.3.0-9.el8.x86_64.rpm

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

Source:
imgbased-1.2.16-0.1.el8ev.src.rpm
redhat-release-virtualization-host-4.4.4-1.el8ev.src.rpm

noarch:
imgbased-1.2.16-0.1.el8ev.noarch.rpm
python3-imgbased-1.2.16-0.1.el8ev.noarch.rpm
redhat-virtualization-host-image-update-placeholder-4.4.4-1.el8ev.noarch.rpm

x86_64:
redhat-release-virtualization-host-4.4.4-1.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/

7. References:

  https://access.redhat.com/security/cve/CVE-2020-25684
  https://access.redhat.com/security/cve/CVE-2020-25685
  https://access.redhat.com/security/cve/CVE-2020-25686
  https://access.redhat.com/security/cve/CVE-2021-3156
  https://access.redhat.com/security/updates/classification/#important
  https://access.redhat.com/security/vulnerabilities/RHSB-2021-001
  https://access.redhat.com/security/vulnerabilities/RHSB-2021-002

8. Contact:

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

Copyright 2021 Red Hat, Inc.