Description
The L3-agent in OpenStack Neutron before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2 allows remote authenticated users to cause a denial of service (IPv4 address attachment outage) by attaching an IPv6 private subnet to a L3 router.
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 | 2014.1.1-1 | — |
| Debian 13 | neutron | 2014.1.1-1 | — |
| Debian 12 | neutron | 2014.1.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | neutron | 1:2014.1-0ubuntu1.3 | USN-2255-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 4 | python-neutron +17 | 2013.2.3-14.el6ost | RHSA-2014:0899 |
Advisories 2
- RHSA-2014:0899 Red Hat Security Advisory: openstack-neutron security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 1, 2026
- USN-2255-1 neutron vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
References
- https://bugs.launchpad.net/neutron/+bug/1309195
- [oss-security] 20140618 [OSSA 2014-019] Neutron L3-agent DoS through IPv6 subnet (CVE-2014-4167) mailing-list
- 59533 third-party-advisory
- USN-2255-1 vendor-advisory