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Red Hat OpenStack: 2013:0658-01 Moderate: OpenStack-Cinder DoS Issues

red hat
Calendar Grey March 21, 2013
Scroller Redhat
The recently released openstack-cinder updates introduce enhancements aimed at bolstering security by mitigating two significant vulnerabilities while also refining overall performance.
Updated openstack-cinder packages that fix two security issues and add one enhancement are now available for Red Hat OpenStack Folsom

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

Summary

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. (BZ#892686)
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 automatically.

Topics%20covered

Topics Covered

security advisory denial of service red hat moderate threat XML parser openstack-cinder

References

https://access.redhat.com/security/cve/CVE-2013-1664 https://access.redhat.com/security/cve/CVE-2013-1665 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/errata/RHSA-2013:0657.html

Package List

OpenStack Folsom:
Source:
noarch: openstack-cinder-2012.2.3-4.el6ost.noarch.rpm openstack-cinder-doc-2012.2.3-4.el6ost.noarch.rpm python-cinder-2012.2.3-4.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


Advisory ID: RHSA-2013:0658-01
Product: Red Hat OpenStack
Advisory URL: https://access.redhat.com/errata/RHSA-2013:0658.html
Issue date: 2013-03-21

Topic

Updated openstack-cinder packages that fix two security issues and add oneenhancement are now available for Red Hat OpenStack Folsom.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory denial of service red hat moderate threat XML parser openstack-cinder

Relevant Releases Architectures

OpenStack Folsom - noarch

Bugs Fixed

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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