ESB-2017.1960 - [RedHat] openstack-neutron: Unauthorised access - Remote with user interaction 2017-08-09

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1960
               Important: openstack-neutron security update
                               9 August 2017

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

Product:           openstack-neutron
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux WS/Desktop 7
                   Red Hat Enterprise Linux Server 7
Impact/Access:     Unauthorised Access -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7543  

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2017:2450

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                   Red Hat Security Advisory

Synopsis:          Important: openstack-neutron security update
Advisory ID:       RHSA-2017:2450-01
Product:           Red Hat Enterprise Linux OpenStack Platform
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:2450
Issue date:        2017-08-08
CVE Names:         CVE-2017-7543 
=====================================================================

1. Summary:

An update for openstack-neutron is now available for Red Hat Enterprise
Linux OpenStack Platform 7.0 (Kilo) for RHEL 7.

Red Hat Product Security has rated this update as having a security impact
of Important. 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 Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 - noarch

3. Description:

OpenStack Networking (neutron) is a pluggable, scalable, and API-driven
system that provisions networking services to virtual machines. Its main
function is to manage connectivity to and from virtual machines.

Security Fix(es):

* A race-condition flaw was discovered in openstack-neutron where,
following a minor overcloud update, neutron security groups were disabled.
Specifically, the following were reset to 0:
net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables.
The race was only triggered by an update, at which point an attacker could
access exposed tenant VMs and network resources. (CVE-2017-7543)

This issue was discovered by Paul Needle (Red Hat).

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/):

1473792 - CVE-2017-7543 openstack-neutron: iptables not active after update

6. Package List:

Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7:

Source:
openstack-neutron-2015.1.4-16.1.el7ost.src.rpm

noarch:
openstack-neutron-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-bigswitch-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-brocade-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-cisco-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-common-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-embrane-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-ibm-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-linuxbridge-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-mellanox-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-metaplugin-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-metering-agent-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-midonet-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-ml2-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-nec-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-nuage-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-ofagent-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-oneconvergence-nvsd-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-opencontrail-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-openvswitch-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-ovsvapp-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-plumgrid-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-sriov-nic-agent-2015.1.4-16.1.el7ost.noarch.rpm
openstack-neutron-vmware-2015.1.4-16.1.el7ost.noarch.rpm
python-neutron-2015.1.4-16.1.el7ost.noarch.rpm
python-neutron-tests-2015.1.4-16.1.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-2017-7543
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 2017 Red Hat, Inc.
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