UBUNTU-CVE-2021-38598

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    UBUNTU-CVE-2021-38598

    Published: 23 Aug 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-38598
    Aliases:
    USN-6067-1

    Summary:

    Details: OpenStack Neutron before 16.4.1, 17.x before 17.1.3, and 18.0.0 allows hardware address impersonation when the linuxbridge driver with ebtables-nft is used on a Netfilter-based platform. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the hardware addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations.

    References: https://ubuntu.com/security/CVE-2021-38598, https://www.openwall.com/lists/oss-security/2021/08/17/4, https://review.opendev.org/c/openstack/neutron/+/785917/, https://ubuntu.com/security/notices/USN-6067-1, https://www.cve.org/CVERecord?id=CVE-2021-38598

    Affected packages

    Package

    Name: neutron

    Purl: pkg:deb/ubuntu/neutron@2:8.4.0-0ubuntu7.5?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2:7.0.0-0ubuntu1

    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
    UBUNTU-CVE-2021-38598 | CVE-DB