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Sicherheit: Preisgabe von Informationen in rhevm-setup-plugins
Aktuelle Meldungen Distributionen
Name: Preisgabe von Informationen in rhevm-setup-plugins
ID: RHSA-2018:0051-01
Distribution: Red Hat
Plattformen: Red Hat Virtualization
Datum: Fr, 5. Januar 2018, 21:21
Referenzen: https://access.redhat.com/security/vulnerabilities/speculativeexecution
https://access.redhat.com/solutions/3307851
https://access.redhat.com/security/cve/CVE-2017-5715
Applikationen: rhevm-setup-plugins

Originalnachricht

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

Synopsis: Important: rhevm-setup-plugins security, bug fix, and
enhancement update
Advisory ID: RHSA-2018:0051-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2018:0051
Issue date: 2018-01-05
=====================================================================

1. Summary:

An update for rhevm-setup-plugins is now available for RHEV Engine version
4.1.

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 4.1 - noarch

3. Description:

The rhevm-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 package has been upgraded to a later upstream version:
rhevm-setup-plugins (4.1.4). (BZ#1527107)

Security Fix(es):

* An industry-wide issue was found in the way many modern microprocessor
designs have implemented speculative execution of instructions (a commonly
used performance optimization). There are three primary variants of the
issue which differ in the way the speculative execution can be exploited.
Variant CVE-2017-5715 triggers the speculative execution by utilizing
branch target injection. It relies on the presence of a precisely-defined
instruction sequence in the privileged code as well as the fact that memory
accesses may cause allocation 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 cross the syscall
and guest/host boundaries and read privileged memory by conducting targeted
cache side-channel attacks. (CVE-2017-5715)

Note: This is the rhevm-setup-plugins side of the CVE-2017-5715 mitigation.

Red Hat would like to thank 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/):

1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection
1527107 - Upgrade rhevm-setup-plugins to 4.1.4

6. Package List:

RHV-M 4.1:

Source:
rhevm-setup-plugins-4.1.4-1.el7ev.src.rpm

noarch:
rhevm-setup-plugins-4.1.4-1.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/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/speculativeexecution
https://access.redhat.com/solutions/3307851
https://access.redhat.com/security/cve/CVE-2017-5715

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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