CVE-2015-5240: Openstack Neutron

Low severity, CVSS 3.5. EPSS: 1% chance of exploitation in the next 30 days.

Race condition in OpenStack Neutron before 2014.2.4 and 2015.1 before 2015.1.2, when using the ML2 plugin or the security groups AMQP API, allows remote authenticated users to bypass IP anti-spoofing controls by changing the device owner of a port to start with network: before the security group rules are applied.

Affected products

• Openstack Neutron: version 2014.2.3 only; version 2015.1.0 only; version 2015.1.1 only

Published 2015-10-27. Last modified 2026-06-17.