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[RHSA-2017:2648-01] Moderate: openvswitch security and bug fix update

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                   Red Hat Security Advisory

Synopsis:          Moderate: openvswitch security and bug fix update
Advisory ID:       RHSA-2017:2648-01
Product:           Red Hat Enterprise Linux OpenStack Platform
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:2648
Issue date:        2017-09-06
CVE Names:         CVE-2017-9214 CVE-2017-9263 CVE-2017-9264 

1. Summary:

An update for openvswitch 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, x86_64

3. Description:

Open vSwitch provides standard network bridging functions and support for
the OpenFlow protocol for remote per-flow control of traffic.

Security Fix(es):

* An unsigned int wrap around leading to a buffer over-read was found when
parsing OFPT_QUEUE_GET_CONFIG_REPLY messages in Open vSwitch (OvS). An
attacker could use this flaw to cause a remote DoS. (CVE-2017-9214)

* In Open vSwitch (OvS), while parsing an OpenFlow role status message
there is a call to the abort() function for undefined role status reasons
in the function `ofp_print_role_status_message` in `lib/ofp-print.c` that
may be leveraged toward a remote DoS attack by a malicious switch.

* A buffer over-read was found in the Open vSwitch (OvS) firewall
implementation. This flaw can be triggered by parsing a specially crafted
TCP, UDP, or IPv6 packet. A remote attack could use this flaw to cause a
Denial of Service (DoS). (CVE-2017-9264)

* A buffer over-read flaw was found in Open vSwitch (OvS) while parsing the
group mod OpenFlow messages sent from the controller. An attacker could use
this flaw to cause a Denial of Service (DoS). (CVE-2017-9265)

4. Solution:

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


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

1431490 - openvswitch: /var/log/openvswitch is world readable
1436610 - [OVS] ofproto-dpif-xlate: Fix duplicate multicast packets
1456795 - CVE-2017-9214 openvswitch: Integer underflow in the ofputil_pull_queue_get_config_reply10 function
1457327 - CVE-2017-9263 openvswitch: Invalid processing of a malicious OpenFlow role status message
1457329 - CVE-2017-9264 openvswitch: Buffer over-read while parsing malformed TCP, UDP and IPv6 packets
1457335 - CVE-2017-9265 openvswitch: Buffer over-read while parsing the group mod OpenFlow message
1463732 - Update OVS 2.6.1 to fix multicast
1468334 - neutron-openvswitch-agent crashes after SIGTERM is received and openvswitch/agent are not restarted
1468631 - openvswitch segfaults when changing port VIF MTU and there's traffic flowing
1468751 - Explicit restart of openvswitch required for dpdk0 association
1472334 - [OVS] mcast-snooping: Avoid segfault for vswitchd
1472335 - [OVS] mcast-snooping: Flush ports mdb when VLAN configuration changed.
1473735 - ovs-vswitchd crashes with SIGSEGV randomly when adding/removing interfaces

6. Package List:

Red Hat OpenStack Platform 10.0:




These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from

7. References:


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.
Version: GnuPG v1


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