ESB-2018.2027 - [RedHat] kernel: Access privileged data - Existing account 2018-07-12

Printable version
PGP/GPG verifiable version

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

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

                               ESB-2018.2027
                   Spectre update for RHEL 5.9 Long Life
                               12 July 2018

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

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

Product:           kernel
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 5
                   Red Hat Enterprise Linux WS/Desktop 5
Impact/Access:     Access Privileged Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-3639  

Reference:         ASB-2018.0121

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2018:2171

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

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

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

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2018:2171-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:2171
Issue date:        2018-07-11
CVE Names:         CVE-2018-3639 
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 5.9 Long
Life.

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 Enterprise Linux Long Life (v. 5.9 server) - i386, ia64, noarch, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

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

The system must be rebooted for this update to take effect.

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

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

6. Package List:

Red Hat Enterprise Linux Long Life (v. 5.9 server):

Source:
kernel-2.6.18-348.40.1.el5.src.rpm

i386:
kernel-2.6.18-348.40.1.el5.i686.rpm
kernel-PAE-2.6.18-348.40.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-348.40.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-348.40.1.el5.i686.rpm
kernel-debug-2.6.18-348.40.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-348.40.1.el5.i686.rpm
kernel-debug-devel-2.6.18-348.40.1.el5.i686.rpm
kernel-debuginfo-2.6.18-348.40.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-348.40.1.el5.i686.rpm
kernel-devel-2.6.18-348.40.1.el5.i686.rpm
kernel-headers-2.6.18-348.40.1.el5.i386.rpm
kernel-xen-2.6.18-348.40.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-348.40.1.el5.i686.rpm
kernel-xen-devel-2.6.18-348.40.1.el5.i686.rpm

ia64:
kernel-2.6.18-348.40.1.el5.ia64.rpm
kernel-debug-2.6.18-348.40.1.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-348.40.1.el5.ia64.rpm
kernel-debug-devel-2.6.18-348.40.1.el5.ia64.rpm
kernel-debuginfo-2.6.18-348.40.1.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-348.40.1.el5.ia64.rpm
kernel-devel-2.6.18-348.40.1.el5.ia64.rpm
kernel-headers-2.6.18-348.40.1.el5.ia64.rpm
kernel-xen-2.6.18-348.40.1.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-348.40.1.el5.ia64.rpm
kernel-xen-devel-2.6.18-348.40.1.el5.ia64.rpm

noarch:
kernel-doc-2.6.18-348.40.1.el5.noarch.rpm

x86_64:
kernel-2.6.18-348.40.1.el5.x86_64.rpm
kernel-debug-2.6.18-348.40.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-348.40.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-348.40.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-348.40.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-348.40.1.el5.x86_64.rpm
kernel-devel-2.6.18-348.40.1.el5.x86_64.rpm
kernel-headers-2.6.18-348.40.1.el5.x86_64.rpm
kernel-xen-2.6.18-348.40.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-348.40.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-348.40.1.el5.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
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.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=RQlx
- -----END PGP SIGNATURE-----

- --------------------------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
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=Kqjv
-----END PGP SIGNATURE-----

« Back to bulletins