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Red Hat Security Advisory

Synopsis: Important: openstack-nova security advisory
Advisory ID: RHSA-2016:0017-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0017.html
Issue date: 2016-01-10
CVE Names: CVE-2015-7548 CVE-2015-7713
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1. Summary:

Updated openstack-nova packages that fix two security issues are now
available for Red Hat Enterprise Linux OpenStack Platform 5.0 for Red
Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Important 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6 – noarch

3. 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 and
controlling access through users and projects.

A flaw was discovered in the OpenStack Compute (nova) snapshot feature when
using the libvirt driver. A compute user could overwrite an attached
instance disk with a malicious header specifying a backing file, and then
request a snapshot, causing a file from the compute host to be leaked. This
flaw only affects LVM or Ceph setups, or setups using filesystem storage
with “use_cow_images = False”. (CVE-2015-7548)

A vulnerability was discovered in the way OpenStack Compute (nova)
networking handled security group updates; changes were not applied to
already running VM instances. A remote attacker could use this flaw to
access running VM instances. (CVE-2015-7713)

The CVE-2015-7548 issue was discovered by Matthew Booth of Red Hat
OpenStack Engineering.

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

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1269119 – CVE-2015-7713 openstack-nova: network security group changes are not applied to running instances
1290511 – CVE-2015-7548 openstack-nova: Unprivileged API user can access host data using instance snapshot

6. Package List:

Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6:

Source:
openstack-nova-2014.1.5-16.el6ost.src.rpm

noarch:
openstack-nova-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-api-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-cells-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-cert-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-common-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-compute-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-conductor-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-console-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-doc-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-network-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-novncproxy-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-objectstore-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-scheduler-2014.1.5-16.el6ost.noarch.rpm
openstack-nova-serialproxy-2014.1.5-16.el6ost.noarch.rpm
python-nova-2014.1.5-16.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/

7. References:

https://access.redhat.com/security/cve/CVE-2015-7548
https://access.redhat.com/security/cve/CVE-2015-7713
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2016 Red Hat, Inc.
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