Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | neutron | 1:7.0.0-1 | — |
| Debian 13 | neutron | 1:7.0.0-1 | — |
| Debian 12 | neutron | 1:7.0.0-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 7 | python-neutron +24 | 2015.1.1-7.el7ost | RHSA-2015:1909 |
| Red Hat OpenStack 6 | python-neutron +25 | 2014.2.3-19.el7ost | RHSA-2015:1909 |
| Red Hat OpenStack 5 | python-neutron +22 | 2014.1.5-4.el6ost | RHSA-2015:1909 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE OpenStack Cloud 5 | crowbar-barclamp-neutron | 1.9+git.1443859419.95e948a-12.2 | SUSE-SU-2015:1890-1 |
| SUSE OpenStack Cloud 5 | openstack-neutron | 2014.2.4~a0~dev103-16.2 | SUSE-SU-2015:1890-1 |
| SUSE OpenStack Cloud 5 | openstack-neutron-doc | 2014.2.4~a0~dev103-16.4 | SUSE-SU-2015:1890-1 |
| SUSE Cloud Compute Node for SUSE Linux Enterprise 12 | openstack-neutron | 2014.2.4~a0~dev103-10.3 | SUSE-SU-2015:2220-1 |
| SUSE Cloud Compute Node for SUSE Linux Enterprise 12 | openstack-nova | 2014.2.4~a0~dev80-14.1 | SUSE-SU-2015:2220-1 |
| SUSE Cloud Compute Node for SUSE Linux Enterprise 12 | python-python-memcached | 1.54-2.1 | SUSE-SU-2015:2220-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | neutron | < 7.0.0 | 7.0.0 | GHSA-hhpj-6pj7-wpx5 |
Advisories 3
- RHSA-2015:1909 Red Hat Security Advisory: openstack-neutron security and bug fix update Red Hat Security Advisories (RHSA) · Aug 1, 2026
- SUSE-SU-2015:1890-1 Security update for openstack-neutron and crowbar-barclamp-neutron SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2220-1 Security update for openstack-nova and openstack-neutron SUSE / openSUSE Security Updates · Feb 4, 2026
References
- RHSA-2015:1909 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1258458
- https://security.openstack.org/ossa/OSSA-2015-018.html
- https://bugs.launchpad.net/neutron/+bug/1489111
- [oss-security] 20151008 [OSSA 2015-018] Neutron firewall rules bypass through port update (CVE-2015-5240) mailing-list