CVE-2015-5240

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    CVE-2015-5240

    Published: 27 Oct 2015Last Modified: 7 Jul 2026

    Summary:

    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.

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

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High