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Red Hat Security Advisory 2018-1674-01

Red Hat Security Advisory 2018-1674-01
Posted May 23, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1674-01 - The rhvm-setup-plugins package adds functionality exclusive only to Red Hat Virtualization Manager, and is not available for the upstream ovirt-engine. It includes the configuration of the Red Hat Support plugin, copying downstream-only artifacts to the ISO domain, and links to the knowledgebase and other support material. The following packages have been upgraded to a later upstream version: rhvm-setup-plugins. Issues addressed include a bypass vulnerability.

tags | advisory, bypass
systems | linux, redhat
advisories | CVE-2018-3639
SHA-256 | 6be987624574d63a7eee60ae0c7795a870a272db470ed531f65b6bf78c8e750e

Red Hat Security Advisory 2018-1674-01

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=====================================================================
Red Hat Security Advisory

Synopsis: Important: rhvm-setup-plugins security update
Advisory ID: RHSA-2018:1674-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1674
Issue date: 2018-05-21
CVE Names: CVE-2018-3639
=====================================================================

1. Summary:

An update for rhvm-setup-plugins is now available for Red Hat
Virtualization Engine 4.2.

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:

RHV-M 4.2 - noarch

3. Description:

The rhvm-setup-plugins package adds functionality exclusive only to Red Hat
Virtualization Manager, and is not available for the upstream ovirt-engine.
It includes the configuration of the Red Hat Support plugin, copying
downstream-only artifacts to the ISO domain, and links to the knowledgebase
and other support material.

The following packages have been upgraded to a later upstream version:
rhvm-setup-plugins (4.2.9). (BZ#1579326)

Security Fix(es):

* An industry-wide issue was found in the way many modern microprocessor
designs have implemented speculative execution of Load & Store instructions
(a commonly used performance optimization). It relies on the presence of a
precisely-defined instruction sequence in the privileged code as well as
the fact that memory read from address to which a recent memory write has
occurred may see an older value and subsequently cause an update into the
microprocessor's data cache even for speculatively executed instructions
that never actually commit (retire). As a result, an unprivileged attacker
could use this flaw to read privileged memory by conducting targeted cache
side-channel attacks. (CVE-2018-3639)

Red Hat would like to thank Ken Johnson (Microsoft Security Response
Center) and Jann Horn (Google Project Zero) for reporting this issue.

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/11258

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

1566890 - CVE-2018-3639 hw: cpu: speculative store bypass

6. Package List:

RHV-M 4.2:

Source:
rhvm-setup-plugins-4.2.9-1.el7ev.src.rpm

noarch:
rhvm-setup-plugins-4.2.9-1.el7ev.noarch.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-2018-3639
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/ssbd

8. Contact:

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

Copyright 2018 Red Hat, Inc.
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