USN-2255-1: OpenStack Neutron vulnerabilities

25 June 2014

neutron vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS
  • Ubuntu 13.10


Several security issues were fixed in OpenStack Neutron.

Software Description

  • neutron - OpenStack Virtual Network Service


Darragh O’Reilly discovered that the Ubuntu packaging for OpenStack Neutron did not properly set up its sudo configuration. If a different flaw was found in OpenStack Neutron, this vulnerability could be used to escalate privileges. (CVE-2013-6433)

Stephen Ma and Christoph Thiel discovered that the openvswitch-agent in OpenStack Neutron did not properly perform input validation when creating security group rules when specifying –remote-ip-prefix. A remote authenticated attacker could exploit this to prevent application of additional rules. (CVE-2014-0187)

Thiago Martins discovered that OpenStack Neutron would inappropriately apply SNAT rules to IPv6 subnets when using the L3-agent. A remote authenticated attacker could exploit this to prevent floating IPv4 addresses from being attached throughout the cloud. (CVE-2014-4167)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04 LTS
python-neutron - 1:2014.1-0ubuntu1.3
Ubuntu 13.10
python-neutron - 1:2013.2.3-0ubuntu1.5

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.