Red Hat 5: RHSA-2013:0168-01 Moderate: Kernel Update Overview

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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://access.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:

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:

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://access.redhat.com/security/cve/CVE-2012-1568
https://access.redhat.com/security/cve/CVE-2012-4444
https://access.redhat.com/security/cve/CVE-2012-5515
https://access.redhat.com/security/updates/classification/#moderate

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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Red Hat 5: RHSA-2013:0168-01 Moderate: Kernel Update Overview

red hat

January 22, 2013

Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 5

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.

Summary

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.

Topics Covered

security advisory moderate denial of service kernel update bug fix Red Hat Enterprise Linux CVE details

References

https://access.redhat.com/security/cve/CVE-2012-1568 https://access.redhat.com/security/cve/CVE-2012-4444 https://access.redhat.com/security/cve/CVE-2012-5515 https://access.redhat.com/security/updates/classification/#moderate

Package List

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

Read the Full Advisory

Advisory ID: RHSA-2013:0168-01

Product: Red Hat Enterprise Linux

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

Issue date: 2013-01-22

Topic

Updated kernel packages that fix three security issues and several bugs arenow available for Red Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics Covered

security advisory moderate denial of service kernel update bug fix Red Hat Enterprise Linux CVE details

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

Bugs Fixed

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

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