CVE-2015-5240

Severity: low (CVSS 3.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-10-27 · updated 2026-06-17
Weakness: CWE-362

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.

Affected products

OpenStack Neutron: 2014.2.3, 2015.1.0, 2015.1.1

References

http://rhn.redhat.com/errata/RHSA-2015-1909.html
http://www.openwall.com/lists/oss-security/2015/09/08/9
https://bugs.launchpad.net/neutron/+bug/1489111
https://bugzilla.redhat.com/show_bug.cgi?id=1258458
https://security.openstack.org/ossa/OSSA-2015-018.html
http://rhn.redhat.com/errata/RHSA-2015-1909.html
http://www.openwall.com/lists/oss-security/2015/09/08/9
https://bugs.launchpad.net/neutron/+bug/1489111
https://bugzilla.redhat.com/show_bug.cgi?id=1258458
https://security.openstack.org/ossa/OSSA-2015-018.html

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