[RHSA-2013:0992-01] Important: python-keystoneclient security, bug fix, and enhancement update

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Red Hat Security Advisory

 

Synopsis: Important: python-keystoneclient security, bug fix, and enhancement update

Advisory ID: RHSA-2013:0992-01

Product: Red Hat OpenStack

Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0992.html

Issue date: 2013-06-27

CVE Names: CVE-2013-2166 CVE-2013-2167

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1. Summary:

 

Updated python-keystoneclient packages that fix two security issues, one

bug, and add one enhancement are now available for Red Hat OpenStack 3.0

(Grizzly) Preview.

 

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:

 

OpenStack 3 - noarch

 

3. Description:

 

Python-keystoneclient is the client library and command line utility for

interacting with the OpenStack identity API.

 

A flaw was found in the way python-keystoneclient handled encrypted data

from memcached. Even when the memcache_security_strategy setting in

"/etc/swift/proxy-server.conf" was set to ENCRYPT to help prevent

tampering, an attacker on the local network, or possibly an unprivileged

user in a virtual machine hosted on OpenStack, could use this flaw to

bypass intended restrictions and modify data in memcached that will later

be used by services utilizing python-keystoneclient (such as Nova, Cinder,

Swift, Glance, and so on). (CVE-2013-2166)

 

A flaw was found in the way python-keystoneclient verified data from

memcached. Even when the memcache_security_strategy setting in

"/etc/swift/proxy-server.conf" was set to MAC to perform signature

checking, an attacker on the local network, or possibly an unprivileged

user in a virtual machine hosted on OpenStack, could use this flaw to

modify data in memcached that will later pass signature checking in

python-keystoneclient. (CVE-2013-2167)

 

Red Hat would like to thank the OpenStack project for reporting these

issues. Upstream acknowledges Paul McMillan of Nebula as the original

reporter.

 

This update also fixes the following bug:

 

* python-webob1.2 (which can be installed in parallel with python-webob1.0)

was not found by python-keystoneclient. Attempting to import python-webob

from python-keystoneclient failed with a stack trace. This could also be

observed with other applications using python-keystoneclient, such as

OpenStack Swift. With this update, python-keystoneclient can import

python-webob1.2 independently from other installed versions. (BZ#971026)

 

Additionally, this update adds the following enhancement:

 

* This update adds support for Amazon Web Services (AWS) Signature Version

4 to python-keystoneclient. This makes python-keystoneclient compatible

with future versions of python-boto, which will use Signature Version 4 by

default. (BZ#970134)

 

All users of Red Hat OpenStack 3.0 (Grizzly) Preview are advised to install

these updated packages, which correct these issues and add this

enhancement.

 

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

 

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

 

971026 - Dependancy issue prevents swift proxy from starting

974271 - CVE-2013-2166 CVE-2013-2167 python-keystoneclient: middleware memcache encryption and signing bypass

 

6. Package List:

 

OpenStack 3:

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/RHOS/SRPMS/python-keystoneclient-0.2.3-5.el6ost.src.rpm

 

noarch:

python-keystoneclient-0.2.3-5.el6ost.noarch.rpm

python-keystoneclient-doc-0.2.3-5.el6ost.noarch.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-2013-2166.html

https://www.redhat.com/security/data/cve/CVE-2013-2167.html

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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