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AUSCERT External Security Bulletin Redistribution
ESB-2015.0266
Important: kernel security update
4 February 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 6
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3688 CVE-2014-3687 CVE-2014-3673
Reference: ESB-2015.0144
ESB-2015.0137
ESB-2015.0093
ESB-2014.2412.2
ESB-2014.2403
ESB-2014.2341
ESB-2014.2016
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2015-0115.html
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Red Hat Security Advisory
Synopsis: Important: kernel security update
Advisory ID: RHSA-2015:0115-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0115.html
Issue date: 2015-02-03
CVE Names: CVE-2014-3673 CVE-2014-3687 CVE-2014-3688
=====================================================================
1. Summary:
Updated kernel packages that fix three security issues are now available
for Red Hat Enterprise Linux 6.2 Advanced Update Support.
Red Hat Product Security has rated this update as having Important security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AUS (v. 6.2 server) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
* A flaw was found in the way the Linux kernel's SCTP implementation
handled malformed or duplicate Address Configuration Change Chunks
(ASCONF). A remote attacker could use either of these flaws to crash the
system. (CVE-2014-3673, CVE-2014-3687, Important)
* A flaw was found in the way the Linux kernel's SCTP implementation
handled the association's output queue. A remote attacker could send
specially crafted packets that would cause the system to use an excessive
amount of memory, leading to a denial of service. (CVE-2014-3688,
Important)
The CVE-2014-3673 issue was discovered by Liu Wei of Red Hat.
All kernel users are advised to 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
https://access.redhat.com/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/):
1147850 - CVE-2014-3673 kernel: sctp: skb_over_panic when receiving malformed ASCONF chunks
1155731 - CVE-2014-3687 kernel: net: sctp: fix panic on duplicate ASCONF chunks
1155745 - CVE-2014-3688 kernel: net: sctp: remote memory pressure from excessive queueing
6. Package List:
Red Hat Enterprise Linux AUS (v. 6.2 server):
Source:
kernel-2.6.32-220.58.1.el6.src.rpm
noarch:
kernel-doc-2.6.32-220.58.1.el6.noarch.rpm
kernel-firmware-2.6.32-220.58.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-220.58.1.el6.x86_64.rpm
kernel-debug-2.6.32-220.58.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.58.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.58.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.58.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.58.1.el6.x86_64.rpm
kernel-devel-2.6.32-220.58.1.el6.x86_64.rpm
kernel-headers-2.6.32-220.58.1.el6.x86_64.rpm
perf-2.6.32-220.58.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.58.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.58.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
Source:
kernel-2.6.32-220.58.1.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-220.58.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.58.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.58.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.58.1.el6.x86_64.rpm
python-perf-2.6.32-220.58.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.58.1.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/
7. References:
https://access.redhat.com/security/cve/CVE-2014-3673
https://access.redhat.com/security/cve/CVE-2014-3687
https://access.redhat.com/security/cve/CVE-2014-3688
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 2015 Red Hat, Inc.
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