Synopsis

Moderate: openstack-nova security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

Updated openstack-nova packages that fix three security issues and one bug
are now available for Red Hat Enterprise Linux OpenStack Platform 3.0.

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.

Description

OpenStack Compute (nova) launches and schedules large networks of virtual
machines, creating a redundant and scalable cloud computing platform.
Compute provides the software, control panels, and APIs required to
orchestrate a cloud, including running virtual machine instances, managing
networks, and controlling access through users and projects.

A flaw was found in the way the libvirt driver handled short-lived disk
back-up files on Compute nodes. An authenticated attacker could use this
flaw to create a large number of such files, exhausting all available space
on Compute node disks, and potentially causing a denial of service.
Note that only Compute setups using the libvirt driver were affected.
(CVE-2013-7048)

It was discovered that the libvirt driver did not properly handle live
migration of virtual machines. An authenticated attacker could use this
flaw to gain access to a snapshot of a migrated virtual machine. Note that
only setups using KVM live block migration were affected. (CVE-2013-7130)

It was found that OpenStack Compute did not properly reapply existing
security groups after migrating or resizing a virtual machine. This could
cause virtual machine instances to be unintentionally exposed on the
network. Note that only setups using the XenAPI back end were affected.
(CVE-2013-4497)

Red Hat would like to thank the OpenStack Project for reporting
CVE-2013-7130. Upstream acknowledges Loganathan Parthipan as the original
reporter of CVE-2013-7130.

This update also fixes the following bug:

• Prior to this update, the cache mechanism did not consider existing
  network interfaces when building the nework list. After any change in the
  network interfaces, only the interface modified last was shown when listing
  or getting the details of an instance. With this update, the cache
  mechanism considers all existing instances when it is being refreshed.
  (BZ#1038239)
  

All openstack-nova users are advised to upgrade to these updated packages,
which correct these issues.

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/site/articles/11258

Affected Products

• Red Hat OpenStack grizzly x86_64

Fixes

• BZ - 1026171 - CVE-2013-4497 openstack-nova: XenAPI security groups not kept through migrate or resize
• BZ - 1038239 - nova interface-attach causes existing networks to be shown as replaced by new one when "nova show" is run
• BZ - 1040786 - CVE-2013-7048 Openstack Nova: insecure directory permissions in snapshots
• BZ - 1055400 - CVE-2013-7130 OpenStack nova: Live migration can leak root disk into ephemeral storage

CVEs

• CVE-2013-7130
• CVE-2013-7048
• CVE-2013-4497

References

• https://access.redhat.com/security/updates/classification/#moderate

Red Hat OpenStack grizzly

SRPM
openstack-nova-2013.1.5-2.el6ost.src.rpm	SHA-256: e597d270e1a903127bcfba88eb552303809f2cddbe0b591abbe60450a57eaddc
x86_64
openstack-nova-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 823115eabef58fc19a22f1901dc88b5e34bdcaa79ba0fd57eb338776eae9b484
openstack-nova-api-2013.1.5-2.el6ost.noarch.rpm	SHA-256: bf6f737eabd1f13fa691d16ce2f28328358dcb0b17b797f4c386fc86c1a8605b
openstack-nova-cells-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 0b75b53e0c97130585b0e3e40228bcec7b75d8f4339dc617e1bf2f0c7e7829d2
openstack-nova-cert-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 320d0a320366e38b30a9c31f08239e1df04dc8d6799066cbf5a966df500ba10d
openstack-nova-common-2013.1.5-2.el6ost.noarch.rpm	SHA-256: ebe13084224c1a5310f15164177b4e574a14c110938670748013fe048f936405
openstack-nova-compute-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 04afbab3c1ba5cadb5f1039e2912f289b2f8dfaf52347227b35e32431503c447
openstack-nova-conductor-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 16c1b9d51636ad7cfb5683ffd881229827adcb9cd8122d579f84cd2a79f6ce76
openstack-nova-console-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 7c1d26a8c543d7cbb4c6dc37218e81c7252a331aa817bc7a21e7ed7a184c9b91
openstack-nova-doc-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 0222f96f8467e4b9db31bb371c11eaaa089651b354fedfbafcf10405c98e7977
openstack-nova-network-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 7e6d36507f75084745252e8844917931021f99929ac05d9c55f0df113e72052d
openstack-nova-objectstore-2013.1.5-2.el6ost.noarch.rpm	SHA-256: feac9f4a4ca3e31242bd3bcd4b60171261e0eed3f2253e155d37df3479590ce6
openstack-nova-scheduler-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 3030a7adc56b870974a7e76be3518aedb6ea6ff82d109f9e4cd4a90df75f61d0
python-nova-2013.1.5-2.el6ost.noarch.rpm	SHA-256: 01cbaaa303a7b176a7908d81d43ffd38d7e04d2204ff49906eb80d0408a13fb4