ESB-2018.0452 - [RedHat] openstack-nova: Increased privileges - Existing account 2018-02-15

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0452
           Moderate: openstack-nova security and bug fix update
                             15 February 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           openstack-nova
Publisher:         Red Hat
Operating System:  Red Hat
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-16239  

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2018:0314

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                   Red Hat Security Advisory

Synopsis:          Moderate: openstack-nova security and bug fix update
Advisory ID:       RHSA-2018:0314-01
Product:           Red Hat Enterprise Linux OpenStack Platform
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:0314
Issue date:        2018-02-13
CVE Names:         CVE-2017-16239 
=====================================================================

1. Summary:

An update for openstack-nova is now available for Red Hat OpenStack
Platform 11.0 (Ocata).

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 11.0 - 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):

* 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):

* A recent update caused OpenStack Compute to ignore the disk cache mode
configuration. This caused I/O performance degradation in instances. This
fix corrects how OpenStack Compute configures disk caching. Instances no
longer suffer performance degradation. (BZ#1508647)

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
1511153 - Rebase openstack-nova to fe8acf0
1527643 - Unable to resize nova instance after upgrade to OSP 10
1528453 - Rebase openstack-nova to bbfc423
1530365 - dist-git not in sync with patches branch
1533164 - migration with block migration fails as disk_available_least is negative
1537045 - Bug in log output in hardware.py "Not enough available memory to schedule instance" prints full memory instead of available memory

6. Package List:

Red Hat OpenStack Platform 11.0:

Source:
openstack-nova-15.0.8-5.el7ost.src.rpm

noarch:
openstack-nova-15.0.8-5.el7ost.noarch.rpm
openstack-nova-api-15.0.8-5.el7ost.noarch.rpm
openstack-nova-cells-15.0.8-5.el7ost.noarch.rpm
openstack-nova-cert-15.0.8-5.el7ost.noarch.rpm
openstack-nova-common-15.0.8-5.el7ost.noarch.rpm
openstack-nova-compute-15.0.8-5.el7ost.noarch.rpm
openstack-nova-conductor-15.0.8-5.el7ost.noarch.rpm
openstack-nova-console-15.0.8-5.el7ost.noarch.rpm
openstack-nova-migration-15.0.8-5.el7ost.noarch.rpm
openstack-nova-network-15.0.8-5.el7ost.noarch.rpm
openstack-nova-novncproxy-15.0.8-5.el7ost.noarch.rpm
openstack-nova-placement-api-15.0.8-5.el7ost.noarch.rpm
openstack-nova-scheduler-15.0.8-5.el7ost.noarch.rpm
openstack-nova-serialproxy-15.0.8-5.el7ost.noarch.rpm
openstack-nova-spicehtml5proxy-15.0.8-5.el7ost.noarch.rpm
python-nova-15.0.8-5.el7ost.noarch.rpm
python-nova-tests-15.0.8-5.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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