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[RHSA-2012:1557-01] Moderate: openstack-keystone security, bug fix, and enhancement update

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Red Hat Security Advisory


Synopsis: Moderate: openstack-keystone security, bug fix, and enhancement update

Advisory ID: RHSA-2012:1557-01

Product: Red Hat OpenStack

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1557.html

Issue date: 2012-12-10

CVE Names: CVE-2012-5563 CVE-2012-5571



1. Summary:


Updated openstack-keystone packages that fix two security issues, multiple

bugs, and add enhancements are now available for Red Hat OpenStack Folsom.


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:


OpenStack Folsom - noarch


3. Description:


The openstack-keystone packages provide Keystone, a Python implementation

of the OpenStack identity service API, which provides Identity, Token,

Catalog, and Policy services.


The openstack-keystone packages have been upgraded to upstream version

2012.2.1, which provides a number of bug fixes and enhancements over the

previous version. (BZ#883829)


This update also fixes the following security issues:


A flaw in Keystone allowed an attacker with access to the web and network

interfaces to continue using chained tokens linked to tokens that had

expired. This would allow the attacker to continue using the tokens despite

the parent token being expired, giving them continued access to OpenStack

services. (CVE-2012-5563)


It was found that Keystone did not correctly handle users being removed

from tenants when Amazon Elastic Compute Cloud (Amazon EC2) style

credentials (credentials that are issued in the same format as standard

Amazon EC2 credentials) were in use. When a user was removed from a tenant,

they retained the privileges provided by that tenant, allowing them to

access resources they should no longer have access to. (CVE-2012-5571)


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

issues. Upstream acknowledges Anndy as the original reporter of

CVE-2012-5563, and Vijaya Erukala as the original reporter of



All users of openstack-keystone are advised to upgrade to these updated

packages, which correct these issues and add these enhancements. After

installing the updated packages, the Keystone service (openstack-keystone)

will be restarted automatically.


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



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


879402 - CVE-2012-5563 OpenStack: Keystone extension of token validity through token chaining

880399 - CVE-2012-5571 OpenStack: Keystone EC2-style credentials invalidation issue

883829 - Keystone - Update to the latest Folsom stable release 2012.2.1


6. Package List:


OpenStack Folsom:










These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from



7. References:






8. Contact:


The Red Hat security contact is . More contact

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


Copyright 2012 Red Hat, Inc.


Version: GnuPG v1.4.4 (GNU/Linux)










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