An updated rtkit package that fixes one security issue is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS)

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====================================================================                   Red Hat Security Advisory

Synopsis:          Important: rtkit security update
Advisory ID:       RHSA-2013:1282-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2013:1282.html
Issue date:        2013-09-24
CVE Names:         CVE-2013-4326 
====================================================================
1. Summary:

An updated rtkit package that fixes one security issue is now available for
Red Hat Enterprise Linux 6.

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 Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

RealtimeKit is a D-Bus system service that changes the scheduling policy of
user processes/threads to SCHED_RR (that is, realtime scheduling mode) on
request. It is intended to be used as a secure mechanism to allow real-time
scheduling to be used by normal user processes.

It was found that RealtimeKit communicated with PolicyKit for authorization
using a D-Bus API that is vulnerable to a race condition. This could have
led to intended PolicyKit authorizations being bypassed. This update
modifies RealtimeKit to communicate with PolicyKit via a different API that
is not vulnerable to the race condition. (CVE-2013-4326)

All rtkit users are advised to upgrade to this updated package, which
contains a backported patch to correct this issue.

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/site/articles/11258

5. Bugs fixed (http://bugzilla.redhat.com/):

1006677 - CVE-2013-4326 rtkit: insecure calling of polkit

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:

i386:
rtkit-0.5-2.el6_4.i686.rpm
rtkit-debuginfo-0.5-2.el6_4.i686.rpm

x86_64:
rtkit-0.5-2.el6_4.x86_64.rpm
rtkit-debuginfo-0.5-2.el6_4.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:

x86_64:
rtkit-0.5-2.el6_4.x86_64.rpm
rtkit-debuginfo-0.5-2.el6_4.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:

i386:
rtkit-0.5-2.el6_4.i686.rpm
rtkit-debuginfo-0.5-2.el6_4.i686.rpm

ppc64:
rtkit-0.5-2.el6_4.ppc64.rpm
rtkit-debuginfo-0.5-2.el6_4.ppc64.rpm

s390x:
rtkit-0.5-2.el6_4.s390x.rpm
rtkit-debuginfo-0.5-2.el6_4.s390x.rpm

x86_64:
rtkit-0.5-2.el6_4.x86_64.rpm
rtkit-debuginfo-0.5-2.el6_4.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:

i386:
rtkit-0.5-2.el6_4.i686.rpm
rtkit-debuginfo-0.5-2.el6_4.i686.rpm

x86_64:
rtkit-0.5-2.el6_4.x86_64.rpm
rtkit-debuginfo-0.5-2.el6_4.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-2013-4326
https://access.redhat.com/security/updates/classification#important

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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