ESB-2018.2168 - [RedHat] qemu-kvm-rhev: Access privileged data - Existing account 2018-07-26

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2168
                 Important: qemu-kvm-rhev security update
                               26 July 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           qemu-kvm-rhev
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
Impact/Access:     Access Privileged Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-3639  

Reference:         ASB-2018.0121
                   ESB-2018.1554
                   ESB-2018.1553
                   ESB-2018.1545

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2018:2258

- --------------------------BEGIN INCLUDED TEXT--------------------

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis:          Important: qemu-kvm-rhev security update
Advisory ID:       RHSA-2018:2258-01
Product:           Red Hat Enterprise Linux OpenStack Platform
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:2258
Issue date:        2018-07-25
CVE Names:         CVE-2018-3639 
=====================================================================

1. Summary:

An update for qemu-kvm-rhev is now available for Red Hat OpenStack Platform
12.

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:

Red Hat OpenStack Platform 12.0 - ppc64le, x86_64

3. Description:

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on a variety of architectures. The qemu-kvm-rhev packages provide the
user-space component for running virtual machines that use KVM in
environments managed by Red Hat products.

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)

Acknowledgements:

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

Note: This is the qemu-kvm-rhev side of the CVE-2018-3639 mitigation that
includes support for guests running on hosts with AMD processors.

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

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:

Red Hat OpenStack Platform 12.0:

Source:
qemu-kvm-rhev-2.10.0-21.el7_5.4.src.rpm

ppc64le:
qemu-img-rhev-2.10.0-21.el7_5.4.ppc64le.rpm
qemu-kvm-common-rhev-2.10.0-21.el7_5.4.ppc64le.rpm
qemu-kvm-rhev-2.10.0-21.el7_5.4.ppc64le.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7_5.4.ppc64le.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7_5.4.ppc64le.rpm

x86_64:
qemu-img-rhev-2.10.0-21.el7_5.4.x86_64.rpm
qemu-kvm-common-rhev-2.10.0-21.el7_5.4.x86_64.rpm
qemu-kvm-rhev-2.10.0-21.el7_5.4.x86_64.rpm
qemu-kvm-rhev-debuginfo-2.10.0-21.el7_5.4.x86_64.rpm
qemu-kvm-tools-rhev-2.10.0-21.el7_5.4.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-2018-3639
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 2018 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=L1Lj
- -----END PGP SIGNATURE-----

- --
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQIVAwUBW1lRBGaOgq3Tt24GAQibMw//RS6NIzzRuq5uMId/I0J8e++MjUNcBXc2
m5lZu48KUjS0MS0to4vxH1ROMTCwgN1RLm2x8LTvaLaYB9MKN6hjrz3scNyrGxOV
/GRoQ5r3vDJ+QrQhdfAY2w5qCm+23z4zibz/yDrzdlhcXRoINwrwziW3gr1sIG4x
4xOa4XJigpKGctHgnJoXg5cENmLwTLUpVB/IJFnnAU81xolBJFPI9IPCflYBO0Rb
8d4SU9XD7fxCS8W/W86yh35Ao6+QHjYgnW6gtKUAXb0HpnRR7sR70lcbk2vfAlWp
Ihmgk0UaK1u1y+C1nLSdCLQmtLMWumrVkh2LpO+0+bv56VBrVUGZ2hWXJ0xd3Dsm
O+Cxbkyxmr55G9qZ+aY6imW3ZH+XJjx66ndmT9wnf3bHOECzBbeAniXmu8kSR1Fi
hTHiecsnMXQ+bi3uEPm834s2GOGlQVCEoyuSZw/Z4XGCS8gvJRLWo5pdxh5bL0EG
H13y8KB3wf9KS0j1Ujy6C2TTuXRP9t7l6XkFX1Ma4VeBC3wGXIjWkOF5AGlbTv/8
Ud1K/PdkmLX3DGd0kA6NbvGrcYfC8NI4ROJ8dcyExqi0s4hwWc4YHCImOGA0BrNF
D074IgWEgSVBs8aZfGm8j8b60FE1K1s7aa+ZWNWag7CexXUXtyzclu8oo8I9Gayf
WrGM4rOH0/0=
=3Wmy
-----END PGP SIGNATURE-----

« Back to bulletins