{"id":"CVE-2015-5240","aliases":["GHSA-hhpj-6pj7-wpx5","PYSEC-2026-853"],"url":"https://o3.security/vulnerability/CVE-2015-5240","summary":"OpenStack Neutron Race condition vulnerability","details":"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.","published":"2015-10-27T16:59:06Z","modified":"2026-07-07T11:56:20.536165385Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"neutron","fixedVersion":"7.0.0"}],"fix":{"url":"https://github.com/openstack/neutron/commit/767cea23de44a963c6793ffe30ea5c6827d27a38","label":"openstack/neutron@767cea2"},"references":[{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2015-1909.html"},{"type":"ADVISORY","url":"https://security.openstack.org/ossa/OSSA-2015-018.html"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1258458"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2015/09/08/9"},{"type":"WEB","url":"https://bugs.launchpad.net/neutron/+bug/1489111"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-5240"},{"type":"WEB","url":"https://github.com/openstack/neutron/commit/767cea23de44a963c6793ffe30ea5c6827d27a38"},{"type":"WEB","url":"https://github.com/openstack/neutron/commit/bbca973986fdc99eae9d1b2545e8246c0b2be2e2"},{"type":"WEB","url":"https://github.com/openstack/neutron/commit/fdc3431ccd219accf6a795079d9b67b8656eed8e"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2015:1909"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2015-5240"},{"type":"PACKAGE","url":"https://github.com/openstack/neutron"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-07T11:56:20.536165385Z"}}