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[RHSA-2013:0168-01] Moderate: kernel security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Moderate: kernel security and bug fix update

Advisory ID: RHSA-2013:0168-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0168.html

Issue date: 2013-01-22

CVE Names: CVE-2012-1568 CVE-2012-4444 CVE-2012-5515

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

 

1. Summary:

 

Updated kernel packages that fix three security issues and several bugs are

now available for Red Hat Enterprise Linux 5.

 

The Red Hat Security Response Team has rated this update as having moderate

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 (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

This update fixes the following security issues:

 

* It was found that the Xen hypervisor implementation did not perform

range checking on the guest provided values in multiple hypercalls. A

privileged guest user could use this flaw to trigger long loops, leading

to a denial of service (Xen hypervisor hang). (CVE-2012-5515, Moderate)

 

* It was found that when running a 32-bit binary that uses a large number

of shared libraries, one of the libraries would always be loaded at a

predictable address in memory. An attacker could use this flaw to bypass

the Address Space Layout Randomization (ASLR) security feature.

(CVE-2012-1568, Low)

 

* A flaw was found in the way the Linux kernel's IPv6 implementation

handled overlapping, fragmented IPv6 packets. A remote attacker could

potentially use this flaw to bypass protection mechanisms (such as a

firewall or intrusion detection system (IDS)) when sending network packets

to a target system. (CVE-2012-4444, Low)

 

Red Hat would like to thank the Xen project for reporting CVE-2012-5515,

and Antonios Atlasis working with Beyond Security's SecuriTeam Secure

Disclosure program and Loganaden Velvindron of AFRINIC for reporting

CVE-2012-4444.

 

This update also fixes several bugs. Space precludes documenting all of

these changes in this advisory. Documentation for these changes will be

available shortly from the Red Hat Enterprise Linux 5.9 Technical Notes

document linked to in the References section.

 

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

https://access.redhat.com/knowledge/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 (http://bugzilla.redhat.com/):

 

804947 - CVE-2012-1568 kernel: execshield: predictable ascii armour base address

874835 - CVE-2012-4444 kernel: net: acceptation of overlapping ipv6 fragments

877397 - CVE-2012-5515 kernel: xen: Several memory hypercall operations allow invalid extent order values

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 5 client):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-348.1.1.el5.src.rpm

 

i386:

kernel-2.6.18-348.1.1.el5.i686.rpm

kernel-PAE-2.6.18-348.1.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-348.1.1.el5.i686.rpm

kernel-debug-2.6.18-348.1.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-debug-devel-2.6.18-348.1.1.el5.i686.rpm

kernel-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-348.1.1.el5.i686.rpm

kernel-devel-2.6.18-348.1.1.el5.i686.rpm

kernel-headers-2.6.18-348.1.1.el5.i386.rpm

kernel-xen-2.6.18-348.1.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-xen-devel-2.6.18-348.1.1.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-348.1.1.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debug-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-348.1.1.el5.x86_64.rpm

kernel-devel-2.6.18-348.1.1.el5.x86_64.rpm

kernel-headers-2.6.18-348.1.1.el5.x86_64.rpm

kernel-xen-2.6.18-348.1.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-348.1.1.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-348.1.1.el5.src.rpm

 

i386:

kernel-2.6.18-348.1.1.el5.i686.rpm

kernel-PAE-2.6.18-348.1.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-348.1.1.el5.i686.rpm

kernel-debug-2.6.18-348.1.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-debug-devel-2.6.18-348.1.1.el5.i686.rpm

kernel-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-348.1.1.el5.i686.rpm

kernel-devel-2.6.18-348.1.1.el5.i686.rpm

kernel-headers-2.6.18-348.1.1.el5.i386.rpm

kernel-xen-2.6.18-348.1.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-348.1.1.el5.i686.rpm

kernel-xen-devel-2.6.18-348.1.1.el5.i686.rpm

 

ia64:

kernel-2.6.18-348.1.1.el5.ia64.rpm

kernel-debug-2.6.18-348.1.1.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-348.1.1.el5.ia64.rpm

kernel-debug-devel-2.6.18-348.1.1.el5.ia64.rpm

kernel-debuginfo-2.6.18-348.1.1.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-348.1.1.el5.ia64.rpm

kernel-devel-2.6.18-348.1.1.el5.ia64.rpm

kernel-headers-2.6.18-348.1.1.el5.ia64.rpm

kernel-xen-2.6.18-348.1.1.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-348.1.1.el5.ia64.rpm

kernel-xen-devel-2.6.18-348.1.1.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-348.1.1.el5.noarch.rpm

 

ppc:

kernel-2.6.18-348.1.1.el5.ppc64.rpm

kernel-debug-2.6.18-348.1.1.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-348.1.1.el5.ppc64.rpm

kernel-debug-devel-2.6.18-348.1.1.el5.ppc64.rpm

kernel-debuginfo-2.6.18-348.1.1.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-348.1.1.el5.ppc64.rpm

kernel-devel-2.6.18-348.1.1.el5.ppc64.rpm

kernel-headers-2.6.18-348.1.1.el5.ppc.rpm

kernel-headers-2.6.18-348.1.1.el5.ppc64.rpm

kernel-kdump-2.6.18-348.1.1.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-348.1.1.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-348.1.1.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-348.1.1.el5.s390x.rpm

kernel-debug-2.6.18-348.1.1.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-348.1.1.el5.s390x.rpm

kernel-debug-devel-2.6.18-348.1.1.el5.s390x.rpm

kernel-debuginfo-2.6.18-348.1.1.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-348.1.1.el5.s390x.rpm

kernel-devel-2.6.18-348.1.1.el5.s390x.rpm

kernel-headers-2.6.18-348.1.1.el5.s390x.rpm

kernel-kdump-2.6.18-348.1.1.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-348.1.1.el5.s390x.rpm

kernel-kdump-devel-2.6.18-348.1.1.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debug-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-348.1.1.el5.x86_64.rpm

kernel-devel-2.6.18-348.1.1.el5.x86_64.rpm

kernel-headers-2.6.18-348.1.1.el5.x86_64.rpm

kernel-xen-2.6.18-348.1.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-348.1.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-348.1.1.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/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2012-1568.html

https://www.redhat.com/security/data/cve/CVE-2012-4444.html

https://www.redhat.com/security/data/cve/CVE-2012-5515.html

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.9_Technical_Notes/kernel.html#RHSA-2013-0168

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2013 Red Hat, Inc.

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