Security Advisory Moderate: openstack-cinder security and enhancement update

Advisory: RHSA-2013:0658-1
Type: Security Advisory
Severity: Moderate
Issued on: 2013-03-21
Last updated on: 2013-03-21
Affected Products: Red Hat OpenStack Folsom
CVEs ( CVE-2013-1664


Updated openstack-cinder packages that fix two security issues and add one
enhancement 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.

The openstack-cinder packages provide OpenStack Volume (code name Cinder),
which provides services to manage and access block storage volumes for use
by virtual machine instances.

A denial of service flaw was found in the Extensible Markup Language (XML)
parser used by Cinder. A remote attacker could use this flaw to send a
specially-crafted request to a Cinder API, causing Cinder to consume an
excessive amount of CPU and memory. (CVE-2013-1664)

A flaw was found in the XML parser used by Cinder. If a remote attacker
sent a specially-crafted request to a Cinder API, it could cause Cinder to
connect to external entities, causing a large amount of system load, or
allow an attacker to read files on the Cinder server that are accessible
to the user running Cinder. (CVE-2013-1665)

This update also adds the following enhancement:

* This update implements a Cinder driver that allows Red Hat Storage to be
used as a back-end for Cinder volumes. To use this driver,
"volume_driver = cinder.volume.glusterfs.GlusterfsDriver" and the
"glusterfs_shares_config" option must be set in "/etc/cinder/cinder.conf",
and the RHSA-2013:0657 openstack-nova update must also be installed. Note
that there is no volume snapshot or clone support when using this driver.

All users of openstack-cinder are advised to upgrade to these updated
packages, which fix these issues and add this enhancement. After installing
the updated packages, the Cinder running services will be restarted


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

Updated packages

Red Hat OpenStack Folsom

File outdated by:  RHBA-2013:1082
    MD5: f4491d9d6ab73d6bd213674e1787abd5
SHA-256: eb6797bf991fd6b38c39c1cdb87a8d79991f183256cecba14766dc2e4b217a3f
File outdated by:  RHBA-2013:1082
    MD5: fdca26f78f23f3d913be735d456aa583
SHA-256: c0b55652b68d1c66ad2b7454173cb88e04f344a0c764dcb184c9966f1acaeb30
File outdated by:  RHBA-2013:1082
    MD5: cab9b4b1c49c61e119afb080011db15c
SHA-256: 550b10b9c57e22329114118566467f886f9e8e16d25450c94f549f38b58823b9
File outdated by:  RHBA-2013:1082
    MD5: 1dd414e8e1a3652f722398b8c906a399
SHA-256: c00a42df259ec3ef0a3d73dda6171088e679fe7cf05a8d0594b259668078a5f6
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

892686 - Develop Cinder driver for Gluster/Red Hat Storage backend for volume support
910222 - CVE-2013-1664 CVE-2013-1665 OpenStack cinder: XML entity parsing
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


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The Red Hat security contact is More contact details at