Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2010.1069
Important: kernel security and bug fix update
24 November 2010
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 5
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2010-2521
Reference: ESB-2010.1053
ESB-2010.0746
ESB-2010.0736
ESB-2010.0693
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2010-0907.html
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2010:0907-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0907.html
Issue date: 2010-11-23
CVE Names: CVE-2010-2521
=====================================================================
1. Summary:
Updated kernel packages that fix one security issue and four bugs are now
available for Red Hat Enterprise Linux 5.4 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 (v. 5.4.z server) - i386, ia64, noarch, ppc, s390x, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issue:
* Buffer overflow flaws were found in the Linux kernel's implementation of
the server-side External Data Representation (XDR) for the Network File
System (NFS) version 4. An attacker on the local network could send a
specially-crafted large compound request to the NFSv4 server, which could
possibly result in a kernel panic (denial of service) or, potentially, code
execution. (CVE-2010-2521, Important)
This update also fixes the following bugs:
* A race condition existed when generating new process IDs with the result
that the wrong process could have been signaled or killed accidentally,
leading to various application faults. This update detects and disallows
the reuse of PID numbers. (BZ#638865)
* In a two node cluster, moving 100 files between two folders using the
lock master was nearly instantaneous. However, not using the lock master
resulted in considerably worse performance on both GFS1 (Global File System
1) and GFS2 (Global File System 2) file systems. With this update, not
using the lock master does not lead to worsened performance on either of
the aforementioned file systems. (BZ#639071)
* The device naming changed after additional devices were added to the
system and caused various problems. With this update, device naming remains
constant after adding any additional devices. (BZ#646764)
* On some bnx2-based devices, frames could drop unexpectedly. This was
shown by the increasing "rx_fw_discards" values in the "ethtool
--statistics" output. With this update, frames are no longer dropped and
all bnx2-based devices work as expected. (BZ#649254)
Users should upgrade to these updated packages, which contain backported
patches to correct these issues. 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
http://kbase.redhat.com/faq/docs/DOC-11259
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 (http://bugzilla.redhat.com/):
612028 - CVE-2010-2521 kernel: nfsd4: bug in read_buf
638865 - [5.5] a race in pid generation that causes pids to be reused immediately. [rhel-5.4.z]
639071 - GFS1 vs GFS2 performance issue [rhel-5.4.z]
646764 - RHEL5.6 Include DL580 G7 in bfsort whitelist [rhel-5.4.z]
649254 - bnx2 adapter periodically dropping received packets [rhel-5.4.z]
6. Package List:
Red Hat Enterprise Linux (v. 5.4.z server):
Source:
kernel-2.6.18-164.30.1.el5.src.rpm
i386:
kernel-2.6.18-164.30.1.el5.i686.rpm
kernel-PAE-2.6.18-164.30.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-164.30.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-164.30.1.el5.i686.rpm
kernel-debug-2.6.18-164.30.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-164.30.1.el5.i686.rpm
kernel-debug-devel-2.6.18-164.30.1.el5.i686.rpm
kernel-debuginfo-2.6.18-164.30.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-164.30.1.el5.i686.rpm
kernel-devel-2.6.18-164.30.1.el5.i686.rpm
kernel-headers-2.6.18-164.30.1.el5.i386.rpm
kernel-xen-2.6.18-164.30.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-164.30.1.el5.i686.rpm
kernel-xen-devel-2.6.18-164.30.1.el5.i686.rpm
ia64:
kernel-2.6.18-164.30.1.el5.ia64.rpm
kernel-debug-2.6.18-164.30.1.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-164.30.1.el5.ia64.rpm
kernel-debug-devel-2.6.18-164.30.1.el5.ia64.rpm
kernel-debuginfo-2.6.18-164.30.1.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-164.30.1.el5.ia64.rpm
kernel-devel-2.6.18-164.30.1.el5.ia64.rpm
kernel-headers-2.6.18-164.30.1.el5.ia64.rpm
kernel-xen-2.6.18-164.30.1.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-164.30.1.el5.ia64.rpm
kernel-xen-devel-2.6.18-164.30.1.el5.ia64.rpm
noarch:
kernel-doc-2.6.18-164.30.1.el5.noarch.rpm
ppc:
kernel-2.6.18-164.30.1.el5.ppc64.rpm
kernel-debug-2.6.18-164.30.1.el5.ppc64.rpm
kernel-debug-debuginfo-2.6.18-164.30.1.el5.ppc64.rpm
kernel-debug-devel-2.6.18-164.30.1.el5.ppc64.rpm
kernel-debuginfo-2.6.18-164.30.1.el5.ppc64.rpm
kernel-debuginfo-common-2.6.18-164.30.1.el5.ppc64.rpm
kernel-devel-2.6.18-164.30.1.el5.ppc64.rpm
kernel-headers-2.6.18-164.30.1.el5.ppc.rpm
kernel-headers-2.6.18-164.30.1.el5.ppc64.rpm
kernel-kdump-2.6.18-164.30.1.el5.ppc64.rpm
kernel-kdump-debuginfo-2.6.18-164.30.1.el5.ppc64.rpm
kernel-kdump-devel-2.6.18-164.30.1.el5.ppc64.rpm
s390x:
kernel-2.6.18-164.30.1.el5.s390x.rpm
kernel-debug-2.6.18-164.30.1.el5.s390x.rpm
kernel-debug-debuginfo-2.6.18-164.30.1.el5.s390x.rpm
kernel-debug-devel-2.6.18-164.30.1.el5.s390x.rpm
kernel-debuginfo-2.6.18-164.30.1.el5.s390x.rpm
kernel-debuginfo-common-2.6.18-164.30.1.el5.s390x.rpm
kernel-devel-2.6.18-164.30.1.el5.s390x.rpm
kernel-headers-2.6.18-164.30.1.el5.s390x.rpm
kernel-kdump-2.6.18-164.30.1.el5.s390x.rpm
kernel-kdump-debuginfo-2.6.18-164.30.1.el5.s390x.rpm
kernel-kdump-devel-2.6.18-164.30.1.el5.s390x.rpm
x86_64:
kernel-2.6.18-164.30.1.el5.x86_64.rpm
kernel-debug-2.6.18-164.30.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-164.30.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-164.30.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-164.30.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-164.30.1.el5.x86_64.rpm
kernel-devel-2.6.18-164.30.1.el5.x86_64.rpm
kernel-headers-2.6.18-164.30.1.el5.x86_64.rpm
kernel-xen-2.6.18-164.30.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-164.30.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-164.30.1.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://www.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2010-2521.html
http://www.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2010 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.4 (GNU/Linux)
iD8DBQFM6/DwXlSAg2UNWIIRAuytAKCy9R9rjk4hzw9PgIMgvtI8eXvSUgCgxF1h
aBLB/1H0lRAexbq3x3PQdWU=
=yVb2
- -----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
iD8DBQFM7Jbb/iFOrG6YcBERAicxAKDQAjEAH+KDdRtNu5puvp0wnzYkCQCgs++v
aMnHftjRuf3ULXGMzmKWO8I=
=HH5u
-----END PGP SIGNATURE-----