UBUNTU-CVE-2021-40085

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-40085

    UBUNTU-CVE-2021-40085

    Published: 31 Aug 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-40085
    Aliases:
    USN-6067-1

    Summary:

    Details: An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.

    References: https://ubuntu.com/security/CVE-2021-40085, https://ubuntu.com/security/notices/USN-6067-1, https://www.cve.org/CVERecord?id=CVE-2021-40085

    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-2021-40085 | CVE-DB