[RHSA-2014:0091-01] Moderate: openstack-neutron security, bug fix, and enhancement update

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Red Hat Security Advisory

 

Synopsis: Moderate: openstack-neutron security, bug fix, and enhancement update

Advisory ID: RHSA-2014:0091-01

Product: Red Hat OpenStack

Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-0091.html

Issue date: 2014-01-22

CVE Names: CVE-2013-6419

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1. Summary:

 

Updated openstack-neutron packages that fix one security issue, several

bugs, and add various enhancements are now available for Red Hat Enterprise

Linux OpenStack Platform 4.0.

 

The Red Hat Security Response Team has rated this update as having moderate

security impact. A Common Vulnerability Scoring System (CVSS) base score,

which gives a detailed severity rating, is available from the CVE link in

the References section.

 

2. Relevant releases/architectures:

 

OpenStack 4 - noarch

 

3. Description:

 

The openstack-neutron packages provide Openstack Networking (neutron), the

virtual network service.

 

It was discovered that the metadata agent in OpenStack Networking was

missing an authorization check on the device ID that is bound to a specific

port. A remote tenant could guess the instance ID bound to a port and

retrieve metadata of another tenant, resulting in information disclosure.

Note that only OpenStack Networking setups running neutron-metadata-agent

were affected. (CVE-2013-6419)

 

Red Hat would like to thank Jeremy Stanley of the OpenStack Project for

reporting this issue. Upstream acknowledges Aaron Rosen of VMware as the

original reporter.

 

The openstack-neutron packages have been upgraded to upstream version

2013.2.1, which provides a number of bug fixes and enhancements over the

previous version. The most notable fixes and enhancements are:

 

* Support for multiple workers in the Neutron API. This can be achieved by

setting the 'workers=' parameter in the neutron.conf file.

 

* The downtime and report interval default settings are tuned for

neutron agents.

 

* The floating IP address stability has been enhanced.

 

* A heartbeat-related deadlock problem in neutron-server has been fixed.

 

(BZ#1045419)

 

This update also fixes the following bugs:

 

* An incorrect warning was displayed when running neutron-dhcp-agent with

Red Hat Enterprise Linux's version of dnsmasq. This meant that users were

incorrectly warned that Red Hat Enterprise Linux's dnsmasq version will not

work with neutron-dhcp-agent. This warning has been removed, and will no

longer be logged to the neutron-dhcp-agent log file. (BZ#1040196)

 

* A bug in the QPID topic consumer re-connection logic (under the v2

topology) caused qpidd to use a malformed subscriber address after

restarting, resulting in RPC requests sent to a topic with multiple servers

ending up being incorrectly multicast to all servers. This update removes

the special-case reconnect logic that handles UUID addresses, which in turn

avoids the incorrect establishment of multiple subscription to the same

fanout address. The QPID broker now simply automatically generates unique

queue names when clients reconnect. (BZ#1045067)

 

* Thread-consuming QPID messages were killed silently by unhandled errors,

thus resulting in isolating the component from the rest of the system.

With this update, consuming threads are made more resilient to errors by

ensuring they do not die on an unhandled error. The error is now logged,

and the consuming thread is retried. (BZ#1054249)

 

In addition, this update adds the following enhancement:

 

* Previously, instances connected to tenant networks gained outside

connectivity by going through an SNAT by the L3 agent hosting that

network's virtual router. With this release, the ability to disable

SNAT/PAT on virtual servers is added ensuring that an instance in a tenant

network subnet will retain its IP address as it passes through external

networks. For example, if 10.0.0.1 is an instance in the 10.0.0.0/8 tenant

network, R1, a virtual router that connects the 10.0.0.0/8 subnet to the

20.0.0.0/8 public provider networks, then you can use the 'neutron

router-gateway-set --disable-snat R1 public' command and any traffic from

10.0.0.1, which is forwarded out to the provider network, will retain its

actual source IP address of 10.0.0.1. This can be a flexible and useful

method to connect instances directly to a provider network, while retaining

it in a tenant network. (BZ#1046070)

 

All openstack-neutron users are advised to upgrade to these updated

packages, which correct these issues and add these enhancements.

 

4. Solution:

 

Before applying this update, make sure all previously released errata

relevant to your system have been applied.

 

This update is available via the Red Hat Network. Details on how to

use the Red Hat Network to apply this update are available at

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

 

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

 

1038737 - neutron is creating duplicated NAT rules, resulting in instances without network connection

1039148 - CVE-2013-6419 OpenStack Neutron and Nova: Metadata queries from Neutron to Nova are not restricted by tenant

1039528 - Neutron rootwrap does not follow packaging guidelines

1040196 - Remove dnsmasq version warning for dhcp-agent on RHEL

1045067 - [oslo] With QPID, RPC calls to a topic are always fanned-out to all subscribers.

1046070 - Configurable External Gateway Modes

1046087 - The error message that indicates manual DB stamping is needed is not clear enough

1054249 - Thread consuming qpid messages can die silently

 

6. Package List:

 

OpenStack 4:

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/RHOS/SRPMS/openstack-neutron-2013.2.1-4.el6ost.src.rpm

 

noarch:

openstack-neutron-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-bigswitch-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-brocade-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-cisco-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-hyperv-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-linuxbridge-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-mellanox-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-metaplugin-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-metering-agent-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-midonet-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-ml2-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-nec-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-nicira-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-openvswitch-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-plumgrid-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-ryu-2013.2.1-4.el6ost.noarch.rpm

openstack-neutron-vpn-agent-2013.2.1-4.el6ost.noarch.rpm

python-neutron-2013.2.1-4.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/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2013-6419.html

https://access.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2014 Red Hat, Inc.

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