Synopsis

Moderate: openstack-nova security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

Updated openstack-nova packages that fix one security issue and several
bugs are now available for Red Hat Enterprise Linux OpenStack Platform 5.0
(Icehouse) for Red Hat Enterprise Linux 7.

The Red Hat Security Response Team has rated this update as having Moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

OpenStack Compute (Nova) launches and schedules large networks of virtual
machines, creating a redundant and scalable cloud computing platform.

A side-channel timing attack flaw was found in Nova. An attacker could
possibly use this flaw to guess valid instance ID signatures, giving them
access to details of another instance, by analyzing the response times of
requests for instance metadata. This issue only affected configurations
that proxy metadata requests via Neutron. (CVE-2014-3517)

Red Hat would like to thank the OpenStack project for reporting this issue.
Upstream acknowledges Alex Gaynor from Rackspace as the original reporter.

This update also fixes the following bugs:

• The GlusterFS driver changes the file name used to point to a volume when
  a snapshot is changed, but in the past the new file name was not stored in
  Compute's block device information.
  

As a result, if the VM was shut down and started again, the old file name
in the snapshot chain was used, resulting in corruption of the qcow2 chain
and unexpected results in the instance.

This has been fixed by persisting the new file name in Compute's block
device info when a snapshot is created. Now, GlusterFS volumes work as
expected after creating or deleting a snapshot and then rebooting the
instance. (BZ#1085852)

• Previously, in some cases, it may not have been possible to attach a
  read-only volume to an instance. (BZ#1100358)
  
• The sysfsutils package enables the Compute service to attach Block
  Storage volumes. This package is automatically installed by PackStack.
  However, sysfsutils was not a dependency of the Compute service; as such,
  when not using PackStack, it was possible to deploy OpenStack without
  sysfsutils installed. When this occurred, the Compute service was unable to
  attach Block Storage volumes.
  

With this release, the sysfsutils package is now a dependency of the
Compute service. This ensures that sysfsutils is installed, regardless of
what deployment method is used. (BZ#1114637)

• An issue with Fibre Channel Cinder volumes not being removed after the
  image has been destroyed has been fixed. (BZ#1115375)
  
• This update fixes legacy group support, allowing you to provide a group
  by name in the scheduler hint instead of using the new server groups API.
  (BZ#1116866)
  
• The openstack-nova package has been updated to upstream version
  2014.1.1, which fixes a number of bugs. (BZ#1117895)
  

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/articles/11258

Affected Products

• Red Hat OpenStack 5.0 for RHEL 7 x86_64

Fixes

• BZ - 1085852 - GlusterFS: Instance is not using the correct snapshot backing file after reboot
• BZ - 1100358 - can't attach a read only volume to an instance
• BZ - 1112499 - CVE-2014-3517 openstack-nova: timing attack issue allows access to other instances' configuration information
• BZ - 1114637 - sysfsutils needs to be a dependency of OpenStack nova
• BZ - 1115375 - FC cinder volumes still show mpath device on nova host after volumes are detached from instance.
• BZ - 1116866 - Fix legacy server group support
• BZ - 1117895 - Rebase openstack-nova to 2014.1.1

CVEs

• CVE-2014-3517

References

• http://www.redhat.com/security/updates/classification/#moderate

Red Hat OpenStack 5.0 for RHEL 7

SRPM
openstack-nova-2014.1.1-4.el7ost.src.rpm	SHA-256: 789634d38f2b42dd21911690169b4be6266d124780576950853d6e9ad3856e01
x86_64
openstack-nova-2014.1.1-4.el7ost.noarch.rpm	SHA-256: fde702eadeafc15d3dd4bbd0cecaf604a0159987a6d8b236bef0133969fc527e
openstack-nova-api-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 88135f66911b97149a4d61bba77a64ff5be7f0ca3e3b01fbca8a2ac71b53b8c5
openstack-nova-cells-2014.1.1-4.el7ost.noarch.rpm	SHA-256: a16f293472c2301747322d9aa77bf9d5731c51d89060a9af3f3c87b716585485
openstack-nova-cert-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 07859da4763e1d4639cea66a637187cbc556836d602f6b812ffb38cd5addc718
openstack-nova-common-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 82a476efcbad3432b2da0f9d2badd15a22e080c30be498ced77966961ef3e207
openstack-nova-compute-2014.1.1-4.el7ost.noarch.rpm	SHA-256: f577ddfa1753866ef2412a01bc64f39888f2ba7f7daab18c98d7ae33bdc680ff
openstack-nova-conductor-2014.1.1-4.el7ost.noarch.rpm	SHA-256: ae465ca0060482e2cabdf56e80f5f82f94ca8df6e61921ccd303ed50f60e581b
openstack-nova-console-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 0e2067b30d96b67603c55f38ba821fde7bf51a4a05a82c725e8b0bb49491d913
openstack-nova-doc-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 974d551fa61a66e70e64b3a6dc2246b2e0846d467e0a2e36c41278e90dd9d173
openstack-nova-network-2014.1.1-4.el7ost.noarch.rpm	SHA-256: de7e7cfbcd865fe058be990f5d9d316975e3129c80da0c4983e3d85763b060e5
openstack-nova-novncproxy-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 50e82638793026d3b835cbc150a2a447e1b6dff097ab7bbcfc1c9f1ba18c65f9
openstack-nova-objectstore-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 8d0fbfdacd8f1d41f8ea8ee210531147aae634ea67fee5ba23526acd4dae7ae8
openstack-nova-scheduler-2014.1.1-4.el7ost.noarch.rpm	SHA-256: 11e6e580a31ce864e2d7d9a4009aee6de79542650b6b3b41a547043ec0707e98
python-nova-2014.1.1-4.el7ost.noarch.rpm	SHA-256: fad799fd048ca0340a4199239b3dd9c4fb2d25813c324440eb195bf31d9c4a8d