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AUSCERT External Security Bulletin Redistribution
ESB-2019.1619
Important: redhat-virtualization-host security update
9 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: redhat-virtualization-host
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 6
Impact/Access: Increased Privileges -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-12180
Reference: ESB-2019.1591
ESB-2019.1391
ESB-2019.0760
Original Bulletin:
https://access.redhat.com/errata/RHSA-2019:1116
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Red Hat Security Advisory
Synopsis: Important: redhat-virtualization-host security update
Advisory ID: RHSA-2019:1116-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2019:1116
Issue date: 2019-05-08
CVE Names: CVE-2018-12180
=====================================================================
1. Summary:
An update for 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.
2. Relevant releases/architectures:
RHEL 7-based RHEV-H for RHEV 4 (build requirements) - noarch, x86_64
Red Hat Virtualization 4 Hypervisor for RHEL 7 - noarch
3. Description:
OVMF (Open Virtual Machine Firmware) is an EDK II (edk2) based project to
enable UEFI support for Virtual Machines. The ovmf package contains a
sample 64-bit UEFI firmware for QEMU and KVM, including the edk2 package.
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: Buffer Overflow in BlockIo service for RAM disk (CVE-2018-12180)
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, after upgrading Red Hat Virtualization Host from
rhvh-4.1-0.20180425.0 to rhvh-4.2.4.3-0.20180627, the owner and group of
sshd.conf were incorrectly changed from root:root to sssd:sssd. As a
result, RHEL IdM accounts using sssd could not ssh into the host. The
current release fixes this issue. (BZ#1608513)
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/):
1608513 - sssd.conf was incorrectly marked for file ownership as sssd:sssd
1683372 - CVE-2018-12180 edk2: Buffer Overflow in BlockIo service for RAM disk
1696303 - Rebase RHV-H on RHEL-7.6 batch #4
1700782 - RHVH does not include the latest openvswitch package
1700868 - [Tracker] RHV-H for 4.3.3-1
6. Package List:
Red Hat Virtualization 4 Hypervisor for RHEL 7:
Source:
redhat-virtualization-host-4.3-20190418.0.el7_6.src.rpm
noarch:
redhat-virtualization-host-image-update-4.3-20190418.0.el7_6.noarch.rpm
RHEL 7-based RHEV-H for RHEV 4 (build requirements):
Source:
redhat-release-virtualization-host-4.3-0.6.el7.src.rpm
noarch:
redhat-virtualization-host-image-update-placeholder-4.3-0.6.el7.noarch.rpm
x86_64:
redhat-release-virtualization-host-4.3-0.6.el7.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-2018-12180
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 2019 Red Hat, Inc.
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