copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
 
Search this site

 
On this site

 > HOME
 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login





 

ESB-2014.0766 - [RedHat] kernel: Root compromise - Existing account

Date: 20 May 2014
References: ESB-2014.0710  ESB-2014.0735  ESB-2014.0784  ESB-2014.0831  ESB-2014.0903  ESB-2014.0931  

Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

                               ESB-2014.0766
                     Important: kernel security update
                                20 May 2014

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

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

Product:           kernel
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 6
Impact/Access:     Root Compromise   -- Existing Account
                   Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-0196  

Reference:         ESB-2014.0735
                   ESB-2014.0710

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2014-0512.html

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

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2014:0512-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2014-0512.html
Issue date:        2014-05-19
CVE Names:         CVE-2014-0196 
=====================================================================

1. Summary:

Updated kernel packages that fix one security issue are now available for
Red Hat Enterprise Linux 6.3 Extended Update Support.

The Red Hat Security Response Team has rated this update as having
Important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Compute Node EUS (v. 6.3) - noarch, x86_64
Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3) - x86_64
Red Hat Enterprise Linux Server EUS (v. 6.3) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.3) - i386, ppc64, s390x, x86_64

3. Description:

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

* A race condition flaw, leading to heap-based buffer overflows, was found
in the way the Linux kernel's N_TTY line discipline (LDISC) implementation
handled concurrent processing of echo output and TTY write operations
originating from user space when the underlying TTY driver was PTY.
An unprivileged, local user could use this flaw to crash the system or,
potentially, escalate their privileges on the system. (CVE-2014-0196,
Important)

All kernel users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. The system must be
rebooted for this update to take effect.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

To install kernel packages manually, use "rpm -ivh [package]". Do not use
"rpm -Uvh" as that will remove the running kernel binaries from your
system. You may use "rpm -e" to remove old kernels after determining that
the new kernel functions properly on your system.

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

1094232 - CVE-2014-0196 kernel: pty layer race condition leading to memory corruption

6. Package List:

Red Hat Enterprise Linux Compute Node EUS (v. 6.3):

Source:
kernel-2.6.32-279.43.2.el6.src.rpm

noarch:
kernel-doc-2.6.32-279.43.2.el6.noarch.rpm
kernel-firmware-2.6.32-279.43.2.el6.noarch.rpm

x86_64:
kernel-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debug-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.43.2.el6.x86_64.rpm
kernel-devel-2.6.32-279.43.2.el6.x86_64.rpm
kernel-headers-2.6.32-279.43.2.el6.x86_64.rpm
perf-2.6.32-279.43.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm

Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3):

Source:
kernel-2.6.32-279.43.2.el6.src.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.43.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
python-perf-2.6.32-279.43.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 6.3):

Source:
kernel-2.6.32-279.43.2.el6.src.rpm

i386:
kernel-2.6.32-279.43.2.el6.i686.rpm
kernel-debug-2.6.32-279.43.2.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-279.43.2.el6.i686.rpm
kernel-debug-devel-2.6.32-279.43.2.el6.i686.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.43.2.el6.i686.rpm
kernel-devel-2.6.32-279.43.2.el6.i686.rpm
kernel-headers-2.6.32-279.43.2.el6.i686.rpm
perf-2.6.32-279.43.2.el6.i686.rpm
perf-debuginfo-2.6.32-279.43.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.i686.rpm

noarch:
kernel-doc-2.6.32-279.43.2.el6.noarch.rpm
kernel-firmware-2.6.32-279.43.2.el6.noarch.rpm

ppc64:
kernel-2.6.32-279.43.2.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-279.43.2.el6.ppc64.rpm
kernel-debug-2.6.32-279.43.2.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm
kernel-debug-devel-2.6.32-279.43.2.el6.ppc64.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-279.43.2.el6.ppc64.rpm
kernel-devel-2.6.32-279.43.2.el6.ppc64.rpm
kernel-headers-2.6.32-279.43.2.el6.ppc64.rpm
perf-2.6.32-279.43.2.el6.ppc64.rpm
perf-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm

s390x:
kernel-2.6.32-279.43.2.el6.s390x.rpm
kernel-debug-2.6.32-279.43.2.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
kernel-debug-devel-2.6.32-279.43.2.el6.s390x.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-279.43.2.el6.s390x.rpm
kernel-devel-2.6.32-279.43.2.el6.s390x.rpm
kernel-headers-2.6.32-279.43.2.el6.s390x.rpm
kernel-kdump-2.6.32-279.43.2.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
kernel-kdump-devel-2.6.32-279.43.2.el6.s390x.rpm
perf-2.6.32-279.43.2.el6.s390x.rpm
perf-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.s390x.rpm

x86_64:
kernel-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debug-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.43.2.el6.x86_64.rpm
kernel-devel-2.6.32-279.43.2.el6.x86_64.rpm
kernel-headers-2.6.32-279.43.2.el6.x86_64.rpm
perf-2.6.32-279.43.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 6.3):

Source:
kernel-2.6.32-279.43.2.el6.src.rpm

i386:
kernel-debug-debuginfo-2.6.32-279.43.2.el6.i686.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.43.2.el6.i686.rpm
perf-debuginfo-2.6.32-279.43.2.el6.i686.rpm
python-perf-2.6.32-279.43.2.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.i686.rpm

ppc64:
kernel-debug-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-279.43.2.el6.ppc64.rpm
perf-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm
python-perf-2.6.32-279.43.2.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-279.43.2.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
perf-debuginfo-2.6.32-279.43.2.el6.s390x.rpm
python-perf-2.6.32-279.43.2.el6.s390x.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.s390x.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.43.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.43.2.el6.x86_64.rpm
python-perf-2.6.32-279.43.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.43.2.el6.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/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2014-0196.html
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 2014 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.4 (GNU/Linux)

iD8DBQFTeevHXlSAg2UNWIIRAra4AKCEmAyOKgOMKTcKEcfb2+w6TC/mFwCfWvev
EOGe9kl4ZMaNGsVrs9ShD4E=
=vPRc
- -----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:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
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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=gAwL
-----END PGP SIGNATURE-----