CVE-2017-7543

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    CVE-2017-7543

    Published: 26 Jul 2018Last Modified: 6 Jul 2026

    Summary:

    Details: A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources.

    References: http://www.securityfocus.com/bid/100237, https://access.redhat.com/errata/RHSA-2017:2447, https://access.redhat.com/errata/RHSA-2017:2448, https://access.redhat.com/errata/RHSA-2017:2449, https://access.redhat.com/errata/RHSA-2017:2450, https://access.redhat.com/errata/RHSA-2017:2451, https://access.redhat.com/errata/RHSA-2017:2452, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2013.1.g3

    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