5 - RHSA-2013:0596

Problem Description:

Updated openstack-keystone packages that fix multiple security issues, various 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 2012.2.3, which provides a number of bug fixes and enhancements over the previous version. (BZ#908995)

This update also fixes the following security issues:

It was found that Keystone failed to properly validate disabled user accounts, or user accounts associated with disabled tenants or domains, 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. Such users could use this flaw to access resources they should no longer have access to. (CVE-2013-0282)

A denial of service flaw was found in the Extensible Markup Language (XML) parser used by Keystone. If a malicious XML file were uploaded for processing, it could possibly cause Keystone to consume an excessive amount of CPU and memory. (CVE-2013-1664)

A flaw was found in the XML parser used by Keystone. If a malicious XML file were uploaded for processing, it could cause Keystone to connect to external entities, causing a large amount of system load, or allow an attacker to read files on the Keystone server that are accessible to the user running the Keystone service. (CVE-2013-1665)

Red Hat would like to thank the OpenStack project for reporting these issues. Upstream acknowledges Nathanael Burton (National Security Agency) as the original reporter of CVE-2013-0282.

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 https://access.redhat.com/knowledge/articles/11258

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

908995 - Keystone - Update to the latest Folsom stable release 2012.2.3 910928 - CVE-2013-0282 OpenStack Keystone: EC2-style authentication accepts disabled user/tenants 912982 - CVE-2013-1665 Python xml bindings: External entity expansion in Python XML libraries inflicts potential security flaws and DoS vulnerabilities 913808 - CVE-2013-1664 Python xml bindings: Internal entity expansion in Python XML libraries inflicts DoS vulnerabilities