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RedHat: RHSA-2019-1116-01 Critical Buffer Overflow in Virtualization Host

red hat
Calendar Grey May 8, 2019
Dist Redhat Esm H88
Ubuntu releases significant security patch for ubuntu-server addressing critical memory leak vulnerability.
An update for redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7

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

Summary

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)

Topics%20covered

Topics Covered

security advisory buffer overflow important security impact red hat virtualization redhat virtualization host

References

https://access.redhat.com/security/cve/CVE-2018-12180 https://access.redhat.com/security/updates/classification#important

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


Severity
important
Lowest
Low
Medium
High
Critical

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

Topic

An update for redhat-virtualization-host is now available for Red HatVirtualization 4 for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory buffer overflow important security impact red hat virtualization redhat virtualization host

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

Bugs Fixed

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

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