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[RHSA-2014:1688-01] Important: openstack-keystone security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Important: openstack-keystone security and bug fix update

Advisory ID: RHSA-2014:1688-01

Product: Red Hat Enterprise Linux OpenStack Platform

Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1688.html

Issue date: 2014-10-22

CVE Names: CVE-2014-2828 CVE-2014-3621

=====================================================================

 

1. Summary:

 

Updated openstack-keystone packages that fix two security issues and

multiple bugs are now available for Red Hat Enterprise Linux OpenStack

Platform 4.0.

 

Red Hat Product Security has rated this update as having Important 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 OpenStack Platform 4.0 - noarch

 

3. Description:

 

The OpenStack Identity service (keystone) authenticates and authorizes

OpenStack users by keeping track of users and their permitted activities.

The Identity service supports multiple forms of authentication, including

user name and password credentials, token-based systems, and AWS-style

logins.

 

A flaw was found in the keystone V3 API. An attacker could send a single

request with the same authentication method multiple times, possibly

leading to a denial of service due to generating excessive load with

minimal requests. Only keystone setups with the V3 API enabled were

affected by this issue. (CVE-2014-2828)

 

A flaw was found in the keystone catalog URL replacement. A user with

permissions to register an endpoint could use this flaw to leak

configuration data, including the master admin_token. Only keystone setups

that allow non-cloud-admin users to create endpoints were affected by this

issue. (CVE-2014-3621)

 

Red Hat would like to thank the OpenStack project for reporting

CVE-2014-3621. Upstream acknowledges Brant Knudson from IBM as the original

reporter of this issue.

 

The openstack-keystone packages have been upgraded to upstream version

2013.2.4, which provides a number of bug fixes over the previous version.

(BZ#1146083)

 

This update fixes the following bugs:

 

* When using an LDAP back end, the Identity service failed with a 'Bad

search filter' error whenever a token request was made for a user whose ID

contained a comma (for example, 'Doe, John'). However, if the user's ID

contained no comma ('John Doe'), the Identity service grants token requests

as expected. This was because the LDAP back end code of the Identity server

did not properly escape special characters when creating search filters.

This update adds the necessary escaping, thereby allowing the Identity

server to perform LDAP search operations correctly. (BZ#1099628)

 

* Previously, if the Identity service encountered a failed connection to a

message broker, re-connection attempts kept failing as well. This was

because the Identity service tried to reconnect to the same failing message

broker, even if there were multiple hosts configured. This has been fixed

by making the reconnect() implementation select the next broker in the

list. As a result, when multiple broker hosts are provided, the Identity

service will try the next one in the list at every connection attempt.

This means that non-failure reconnect attempts will also switch from the

current broker to the next in the list. Hence, users should not rely on any

particular order when using brokers from the list. (BZ#1082669)

 

* The Identity service now logs successful authentications of users.

In previous releases, only authentication failures were logged.

(BZ#1098635)

 

* When using the LDAP back end and connecting to Active Directory

anonymously, trying to use the top-level suffix as the user_tree_dn (or

tenant/role_tree_dn) failed with a communication error. This is because the

Identity service attempted to chase returned referrals, which is not

allowed by default in Active Directory for security reasons. This update

adds a new configuration option to disable referral chasing for LDAP search

operations, namely chase_referrals. When this option is disabled, the

Identity service will skip over any returned referrals without chasing

them. (BZ#1093833)

 

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

packages, which correct these issues.

 

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/articles/11258

 

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

 

1082669 - connection to multiple qpidd instances is broken

1086211 - CVE-2014-2828 openstack-keystone: denial of service via V3 API authentication chaining

1099628 - LDAP non-URL safe characters cause auth failure

1139937 - CVE-2014-3621 openstack-keystone: configuration data information leak through Keystone catalog

1146083 - Rebase openstack-keystone to 2013.2.4

 

6. Package List:

 

Red Hat Enterprise Linux OpenStack Platform 4.0:

 

Source:

openstack-keystone-2013.2.4-1.el6ost.src.rpm

 

noarch:

openstack-keystone-2013.2.4-1.el6ost.noarch.rpm

openstack-keystone-doc-2013.2.4-1.el6ost.noarch.rpm

python-keystone-2013.2.4-1.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/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2014-2828

https://access.redhat.com/security/cve/CVE-2014-3621

https://access.redhat.com/security/updates/classification/#important

https://wiki.openstack.org/wiki/ReleaseNotes/2013.2.4

 

8. Contact:

 

The Red Hat security contact is . More contact

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

 

Copyright 2014 Red Hat, Inc.

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