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Sicherheit: Mangelnde Rechteprüfung in OpenStack
Aktuelle Meldungen Distributionen
Name: Mangelnde Rechteprüfung in OpenStack
ID: RHSA-2018:0369-01
Distribution: Red Hat
Plattformen: Red Hat Enterprise Linux OpenStack Platform
Datum: Di, 27. Februar 2018, 18:31
Referenzen: https://access.redhat.com/security/cve/CVE-2017-16239
Applikationen: OpenStack

Originalnachricht

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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: openstack-nova and python-novaclient security, bug
fix, and enhancement update
Advisory ID: RHSA-2018:0369-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2018:0369
Issue date: 2018-02-27
CVE Names: CVE-2017-16239
=====================================================================

1. Summary:

An update for openstack-nova and python-novaclient 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:

OpenStack 10.0 Tools for RHEL 7 - noarch
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.

python-novaclient is the python client for the OpenStack Nova API. The
client's Python API (the novaclient module) and command-line script (nova)
both implement 100% of the OpenStack Nova API.

The following packages have been upgraded to a later upstream version:
openstack-nova (14.1.0), python-novaclient (6.0.2). (BZ#1501736)

Security Fix(es):

* By rebuilding an instance using a new image, an authenticated user may be
able to circumvent the Filter Scheduler, bypassing imposed filters (for
example, the ImagePropertiesFilter or the IsolatedHostsFilter).
(CVE-2017-16239)

Red Hat would like to thank the OpenStack project for reporting this issue.
Upstream acknowledges George Shuklin (Servers.com) as the original
reporter.

Bug Fix(es):

* Prior to this update, QEMU (also known as TCG) guests had an issue where
the `guest.get_vcpu_info` method was throwing an exception indicating that
0 were vCPUs used on the host, regardless of how many guests were running.
Consequently, this caused the 'get_available_resources' method to
report
incorrect vCPUs used values for the Compute node. This meant it was
overcounting resource consumption for plain QEMU guests, as they can only
ever consume 1 pCPU of time, regardless of vCPU count. With this update, if
a host does not report detailed vCPU usage from libvirt, then it should
default to reporting 1 vCPU per guest, so that the 'vcpus_used' field
reports some reasonably meaningful data on host CPU usage. As a result,
libvirt does not report that 'cpu affinity is not supported' when
guests
are running in TCG. (BZ#1515165)

* With this enhancement, the act of evacuating instances with pinned CPUs
can result in these instances being hosted on a hypervisor which already
handles instances with the same pinning configuration. This was added
because the resource tracker does not track CPU pinning for instances on
hosts. As a result, a condition has been added to the NUMATopologyFilter
filter, which passes on hosts which already manage an instance with same
CPU pinning configuration as the instance being evacuated. (BZ#1517272)

* Previously, the `request_spec.spec` column's TEXT type was too small,
with the result that large request_specs may not have fit successfully.
Consequently, running the online data migration as part of an OSP9 to OSP10
upgrade could have resulted in failure if an instance created before the
upgrade had a large request_spec (for example, by having many members in
its affinity/anti-affinity group). With this update, the request_spec.spec
column has been increased to `MEDIUMTEXT`. As a result, online data
migration should no longer fail during a OSP9 to OSP10 upgrade.
(BZ#1526082)

* Previously, when detaching a Ceph volume connected to guest as a PCI
device, the volume was not detached and libvirt reported an invalid PCI
address. This arose because the PCI address of the device was not properly
formatted due to a missing method in the guest XML formatter. To address
this issue, this update adds a proper `format_dom` method for
`LibvirtConfigGuestDeviceAddressPCI`. As a result, it is now possible to
detach a Ceph volume. (BZ#1527345)

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/):

1508539 - CVE-2017-16239 openstack-nova: Nova Filter Scheduler bypass through
rebuild action
1515165 - Seeing cpu affinity is not supported messages on compute node
1519054 - Bug in log output in hardware.py "Not enough available memory to
schedule instance" prints full memory instead of available memory
1525427 - [RHOSP10] nova --bypass-url flag throw the ERROR (KeyError):
'versions'
1526082 - Unable to resize nova instance after upgrade to OSP 10
1527345 - Detaching a ceph volume results error:
nodeLibvirtConfigGuestDeviceAddressPCI missing format_dom method
1530330 - migration with block migration fails as disk_available_least is
negative
1534665 - Rebase openstack-nova to 14.1.0

6. Package List:

OpenStack 10.0 Tools for RHEL 7:

Source:
python-novaclient-6.0.2-2.el7ost.src.rpm

noarch:
python-novaclient-6.0.2-2.el7ost.noarch.rpm

Red Hat OpenStack Platform 10.0:

Source:
openstack-nova-14.1.0-3.el7ost.src.rpm
python-novaclient-6.0.2-2.el7ost.src.rpm

noarch:
openstack-nova-14.1.0-3.el7ost.noarch.rpm
openstack-nova-api-14.1.0-3.el7ost.noarch.rpm
openstack-nova-cells-14.1.0-3.el7ost.noarch.rpm
openstack-nova-cert-14.1.0-3.el7ost.noarch.rpm
openstack-nova-common-14.1.0-3.el7ost.noarch.rpm
openstack-nova-compute-14.1.0-3.el7ost.noarch.rpm
openstack-nova-conductor-14.1.0-3.el7ost.noarch.rpm
openstack-nova-console-14.1.0-3.el7ost.noarch.rpm
openstack-nova-migration-14.1.0-3.el7ost.noarch.rpm
openstack-nova-network-14.1.0-3.el7ost.noarch.rpm
openstack-nova-novncproxy-14.1.0-3.el7ost.noarch.rpm
openstack-nova-placement-api-14.1.0-3.el7ost.noarch.rpm
openstack-nova-scheduler-14.1.0-3.el7ost.noarch.rpm
openstack-nova-serialproxy-14.1.0-3.el7ost.noarch.rpm
openstack-nova-spicehtml5proxy-14.1.0-3.el7ost.noarch.rpm
python-nova-14.1.0-3.el7ost.noarch.rpm
python-nova-tests-14.1.0-3.el7ost.noarch.rpm
python-novaclient-6.0.2-2.el7ost.noarch.rpm

OpenStack 10.0 Tools for RHEL 7:

Source:
python-novaclient-6.0.2-2.el7ost.src.rpm

noarch:
python-novaclient-6.0.2-2.el7ost.noarch.rpm

OpenStack 10.0 Tools for RHEL 7:

Source:
python-novaclient-6.0.2-2.el7ost.src.rpm

noarch:
python-novaclient-6.0.2-2.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-2017-16239
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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