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Red Hat Security Advisory

Synopsis: Moderate: openstack-nova security and bug fix update
Advisory ID: RHSA-2018:2714-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2018:2714
Issue date: 2018-09-17
CVE Names: CVE-2017-18191
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1. Summary:

An update for openstack-nova is now available for Red Hat OpenStack
Platform 10.0 (Newton).

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

2. Relevant releases/architectures:

Red Hat OpenStack Platform 10.0 – 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.

Security Fix(es):

* openstack-nova: Swapping encrypted volumes can allow an attacker to
corrupt the LUKS header causing a denial of service in the host
(CVE-2017-18191)

For more details about the security issue, including the impact, a CVSS
score, and other related information, refer to the CVE page listed in the
References section.

Bug Fix(es):

* Previously, the MTU of TAP devices was not configured. As a result, the
network could be configured with a different MTU than a guest TAP device.

With this update, you can configure libvirt when you create the TAP device
for the guest. Nova passes the correct parameter to libvirt, and the TAP
device now has the same configuration as the network. (BZ#1553839)

* Previously, the MTU of TAP devices was not configured. As a result, the
network could be configured with a different MTU than a guest TAP device.

With this update, you can configure libvirt when you create the TAP device
for the guest. Nova passes the correct parameter to libvirt, and the TAP
device now has the same configuration as the network. (BZ#1553559)

* Previously, the ‘[vnc] keymap’ option was ‘en-us’ by default, and it was
not possible to unset this configuration. As a result of this, non-US
locales experienced ineffective key mappings.

With this update, users can unset the ‘[vnc] keymap’ value. In this case,
the VNC client configures the locale and non-US users attain more effective
key mappings. (BZ#1441962)

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

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

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

1441962 – Remove default option for keymap in code and config files
1546937 – CVE-2017-18191 openstack-nova: Swapping encrypted volumes can allow an attacker to corrupt the LUKS header causing a denial of service in the host
1546965 – Launching Instance fails when image property hw_disk_bus=scsi is set
1553559 – Configured jumbo frames and tap device is still being created with the MTU 1500
1553839 – if ovs_hybrid_plug=false for a VM instance neutron port, the MTU is not always set correctly
1569953 – preallocate_images = space is not honoured when using qcow2
1575989 – Duplicate imports of oslo_config types

6. Package List:

Red Hat OpenStack Platform 10.0:

Source:
openstack-nova-14.1.0-26.el7ost.src.rpm

noarch:
openstack-nova-14.1.0-26.el7ost.noarch.rpm
openstack-nova-api-14.1.0-26.el7ost.noarch.rpm
openstack-nova-cells-14.1.0-26.el7ost.noarch.rpm
openstack-nova-cert-14.1.0-26.el7ost.noarch.rpm
openstack-nova-common-14.1.0-26.el7ost.noarch.rpm
openstack-nova-compute-14.1.0-26.el7ost.noarch.rpm
openstack-nova-conductor-14.1.0-26.el7ost.noarch.rpm
openstack-nova-console-14.1.0-26.el7ost.noarch.rpm
openstack-nova-migration-14.1.0-26.el7ost.noarch.rpm
openstack-nova-network-14.1.0-26.el7ost.noarch.rpm
openstack-nova-novncproxy-14.1.0-26.el7ost.noarch.rpm
openstack-nova-placement-api-14.1.0-26.el7ost.noarch.rpm
openstack-nova-scheduler-14.1.0-26.el7ost.noarch.rpm
openstack-nova-serialproxy-14.1.0-26.el7ost.noarch.rpm
openstack-nova-spicehtml5proxy-14.1.0-26.el7ost.noarch.rpm
python-nova-14.1.0-26.el7ost.noarch.rpm
python-nova-tests-14.1.0-26.el7ost.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-2017-18191
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2018 Red Hat, Inc.
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