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Red Hat 6.2 RHSA-2015:0115-01 Important: Kernel DoS Threats

red hat
Calendar Grey February 3, 2015
Dist Redhat Esm H88
Ubuntu has released an important patch addressing several high-risk security flaws. Update your system immediately to avoid potential failures.
Updated kernel packages that fix three security issues are now available for Red Hat Enterprise Linux 6.2 Advanced Update Support

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.

Summary

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.

Topics%20covered

Topics Covered

security advisory denial of service important kernel Red Hat Enterprise

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

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/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:0115-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:0115.html
Issue date: 2015-02-03

Topic

Updated kernel packages that fix three security issues are now availablefor Red Hat Enterprise Linux 6.2 Advanced Update Support.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory denial of service important kernel Red Hat Enterprise

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

Bugs Fixed

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

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