(RHSA-2013:0208) Important: openstack-nova security and bug fix update

The openstack-nova packages provide OpenStack Compute (code name Nova), a
cloud computing fabric controller.

The openstack-nova packages have been upgraded to upstream version
2012.2.2, which provides a number of bug fixes over the previous version.

This update also fixes the following security issues:

It was found that the boot-from-volume feature in nova-volume did not
correctly validate if the user attempting to boot an image was permitted
to do so. An authenticated user could use this flaw to bypass
intended restrictions, allowing them to boot images they would otherwise
not have access to, exposing data stored in other users’ images. This
issue did not affect configurations using the Cinder block storage
mechanism, which is the default in Red Hat OpenStack. (CVE-2013-0208)

When OpenStack Nova was configured to provide guest instances with libvirt
and said guests used LVM-backed ephemeral storage
(“libvirt_images_type=lvm” in “/etc/nova/nova.conf”), the contents of the
physical volume were not wiped before the volume was returned to the system
for use by a different guest instance. This could lead to a new instance
being able to access files and data from a previous instance. This issue
did not affect configurations using the Cinder block storage mechanism,
which is the default in Red Hat OpenStack. (CVE-2012-5625)

Red Hat would like to thank the OpenStack project for reporting these
issues. Upstream acknowledges Phil Day as the original reporter of
CVE-2013-0208, and Eric Windisch as the original reporter of CVE-2012-5625.

All users of openstack-nova are advised to upgrade to these updated
packages, which correct these issues. After installing the updated
packages, the Nova running services will be restarted automatically.