{"id":"CVE-2015-5240","aliases":["GHSA-hhpj-6pj7-wpx5","PYSEC-2026-853"],"title":"OpenStack Neutron Race condition vulnerability","summary":"OpenStack Neutron Race condition vulnerability","severity":"low","vendor":"neutron","product":"neutron","ecosystem":"pip","affected":["neutron < 7.0.0"],"patched":["neutron 7.0.0"],"published":"2022-05-17","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-hhpj-6pj7-wpx5","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-5240"},{"url":"https://github.com/openstack/neutron/commit/767cea23de44a963c6793ffe30ea5c6827d27a38"},{"url":"https://github.com/openstack/neutron/commit/bbca973986fdc99eae9d1b2545e8246c0b2be2e2"},{"url":"https://github.com/openstack/neutron/commit/fdc3431ccd219accf6a795079d9b67b8656eed8e"},{"url":"https://access.redhat.com/errata/RHSA-2015:1909"},{"url":"https://access.redhat.com/security/cve/CVE-2015-5240"},{"url":"https://bugs.launchpad.net/neutron/+bug/1489111"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1258458"},{"url":"https://github.com/openstack/neutron"},{"url":"https://security.openstack.org/ossa/OSSA-2015-018.html"},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1909.html"},{"url":"http://www.openwall.com/lists/oss-security/2015/09/08/9"}],"tags":["osv","pip"],"epss":0.00971,"epssPercentile":0.59912,"ingestedAt":"2026-07-08T18:25:50.246Z","slug":"CVE-2015-5240","body":"## Overview\n\nRace 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.\n\n## Affected packages\n\n- `neutron < 7.0.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `neutron 7.0.0`","depth":"sunlit","depthScore":14,"depthScoreParts":{"impact":13.8,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}