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CVE-2021-20267

CVE-2021-20267

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.

CVSS 7.1 · High · EPSS 1.0% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • openstack-neutron

    Versions
    • openstack-neutron 15.3.3, openstack-neutron 16.3.1, openstack-neutron 17.1.1: Affected

    No fix published

  • neutron Debian:12

    Affected ranges
    • ECOSYSTEM: < 2:17.1.1-5

    Update to 2:17.1.1-5

  • neutron Debian:13

    Affected ranges
    • ECOSYSTEM: < 2:17.1.1-5

    Update to 2:17.1.1-5

  • neutron Debian:14

    Affected ranges
    • ECOSYSTEM: < 2:17.1.1-5

    Update to 2:17.1.1-5

  • neutron PyPI

    Versions
    • 16.0.0
    • 16.1.0
    • 16.2.0
    • 16.3.0
    Affected ranges
    • ECOSYSTEM: ≥ 16.0.0, < 16.3.1

    Update to 16.3.1

  • neutron PyPI

    Versions
    • 0.0
    • 10.0.5
    • 10.0.6
    • 10.0.7
    • 11.0.3
    • 11.0.4
    • 11.0.5
    • 11.0.6
    • 11.0.7
    • 11.0.8
    • 12.0.0
    • 12.0.0.0b3
    • 12.0.0.0rc1
    • 12.0.0.0rc2
    • 12.0.1
    • 12.0.2
    • 12.0.3
    • 12.0.4
    • 12.0.5
    • 12.0.6
    • 12.1.0
    • 12.1.1
    • 13.0.0
    • 13.0.0.0b1
    • 13.0.0.0b2
    • 13.0.0.0b3
    • 13.0.0.0rc1
    • 13.0.0.0rc2
    • 13.0.1
    • 13.0.2
    • 13.0.3
    • 13.0.4
    • 13.0.5
    • 13.0.6
    • 13.0.7
    • 14.0.0
    • 14.0.0.0b1
    • 14.0.0.0b2
    • 14.0.0.0b3
    • 14.0.0.0rc1
    • 14.0.1
    • 14.0.2
    • 14.0.3
    • 14.0.4
    • 14.1.0
    • 14.2.0
    • 14.3.0
    • 14.3.1
    • 14.4.0
    • 14.4.1
    • 14.4.2
    • 15.0.0
    • 15.0.0.0b1
    • 15.0.0.0rc1
    • 15.0.0.0rc2
    • 15.0.1
    • 15.0.2
    • 15.1.0
    • 15.2.0
    • 15.3.0
    • 15.3.1
    • 15.3.2
    Affected ranges
    • ECOSYSTEM: < 15.3.3

    Update to 15.3.3

  • neutron PyPI

    Versions
    • 17.0.0
    • 17.1.0
    Affected ranges
    • ECOSYSTEM: ≥ 17.0.0, < 17.1.1

    Update to 17.1.1

  • neutron PyPI

    Versions
    • 0.0
    • 10.0.5
    • 10.0.6
    • 10.0.7
    • 11.0.3
    • 11.0.4
    • 11.0.5
    • 11.0.6
    • 11.0.7
    • 11.0.8
    • 12.0.0
    • 12.0.0.0b3
    • 12.0.0.0rc1
    • 12.0.0.0rc2
    • 12.0.1
    • 12.0.2
    • 12.0.3
    • 12.0.4
    • 12.0.5
    • 12.0.6
    • 12.1.0
    • 12.1.1
    • 13.0.0
    • 13.0.0.0b1
    • 13.0.0.0b2
    • 13.0.0.0b3
    • 13.0.0.0rc1
    • 13.0.0.0rc2
    • 13.0.1
    • 13.0.2
    • 13.0.3
    • 13.0.4
    • 13.0.5
    • 13.0.6
    • 13.0.7
    • 14.0.0
    • 14.0.0.0b1
    • 14.0.0.0b2
    • 14.0.0.0b3
    • 14.0.0.0rc1
    • 14.0.1
    • 14.0.2
    • 14.0.3
    • 14.0.4
    • 14.1.0
    • 14.2.0
    • 14.3.0
    • 14.3.1
    • 14.4.0
    • 14.4.1
    • 14.4.2
    • 15.0.0
    • 15.0.0.0b1
    • 15.0.0.0rc1
    • 15.0.0.0rc2
    • 15.0.1
    • 15.0.2
    • 15.1.0
    • 15.2.0
    • 15.3.0
    • 15.3.1
    • 15.3.2
    • 16.0.0
    • 16.1.0
    • 16.2.0
    • 16.3.0
    • 17.0.0
    • 17.1.0
    Affected ranges
    • ECOSYSTEM: < 15.3.3 ∪ ≥ 16.0.0, < 16.3.1 ∪ ≥ 17.0.0, < 17.1.1

    Update to 15.3.3; Update to 16.3.1; Update to 17.1.1

  • neutron Ubuntu:16.04:LTS

    Versions
    • 2:7.0.0-0ubuntu1
    • 2:8.0.0~b1-0ubuntu2
    • 2:8.0.0~b2-0ubuntu4
    • 2:8.0.0~b2-0ubuntu5
    • 2:8.0.0~b2-0ubuntu7
    • 2:8.0.0~b3-0ubuntu1
    • 2:8.0.0~rc1-0ubuntu1
    • 2:8.0.0-0ubuntu1
    • 2:8.1.0-0ubuntu0.16.04.2
    • 2:8.1.2-0ubuntu1
    • 2:8.2.0-0ubuntu1
    • 2:8.3.0-0ubuntu1
    • 2:8.3.0-0ubuntu1.1
    • 2:8.3.0-0ubuntu1.2
    • 2:8.4.0-0ubuntu1
    • 2:8.4.0-0ubuntu2
    • 2:8.4.0-0ubuntu3
    • 2:8.4.0-0ubuntu4
    • 2:8.4.0-0ubuntu5
    • 2:8.4.0-0ubuntu6
    • 2:8.4.0-0ubuntu7.1
    • 2:8.4.0-0ubuntu7.2
    • 2:8.4.0-0ubuntu7.3
    • 2:8.4.0-0ubuntu7.4
    • 2:8.4.0-0ubuntu7.5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • neutron Ubuntu:18.04:LTS

    Versions
    • 2:11.0.1-0ubuntu1
    • 2:12.0.0~b1-0ubuntu1
    • 2:12.0.0~b1-0ubuntu2
    • 2:12.0.0~b2-0ubuntu1
    • 2:12.0.0~b3-0ubuntu1
    • 2:12.0.0~rc1-0ubuntu1
    • 2:12.0.0~rc2-0ubuntu1
    • 2:12.0.0-0ubuntu1
    • 2:12.0.0-0ubuntu1.1
    • 2:12.0.0-0ubuntu1.2
    • 2:12.0.0-0ubuntu1.3
    • 2:12.0.0-0ubuntu1.4
    • 2:12.0.0-0ubuntu2
    • 2:12.0.0-0ubuntu3
    • 2:12.0.1-0ubuntu1
    • 2:12.0.1-0ubuntu1.1
    • 2:12.0.2-0ubuntu1
    • 2:12.0.3-0ubuntu1
    • 2:12.0.5-0ubuntu1
    • 2:12.0.5-0ubuntu4
    • 2:12.0.5-0ubuntu5
    • 2:12.0.6-0ubuntu1
    • 2:12.0.6-0ubuntu2
    • 2:12.0.6-0ubuntu3
    • 2:12.1.0-0ubuntu1
    • 2:12.1.1-0ubuntu1
    • 2:12.1.1-0ubuntu2
    • 2:12.1.1-0ubuntu3
    • 2:12.1.1-0ubuntu4
    • 2:12.1.1-0ubuntu7
    • 2:12.1.1-0ubuntu8
    Affected ranges
    • ECOSYSTEM: < 2:12.1.1-0ubuntu8.1

    Update to 2:12.1.1-0ubuntu8.1

  • neutron Ubuntu:20.04:LTS

    Versions
    • 2:15.0.0-0ubuntu1
    • 2:16.0.0~b1~git2019121613.3e8abb9a8f-0ubuntu1
    • 2:16.0.0~b2~git2020020712.d5b33ffc77-0ubuntu1
    • 2:16.0.0~b2~git2020020712.d5b33ffc77-0ubuntu3
    • 2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu1
    • 2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu2
    • 2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu3
    • 2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu4
    • 2:16.0.0~b3~git2020041013.e74c8f8c88-0ubuntu1
    • 2:16.0.0~b3~git2020041516.5f42488a9a-0ubuntu1
    • 2:16.0.0~b3~git2020041516.5f42488a9a-0ubuntu2
    • 2:16.0.0-0ubuntu0.20.04.1
    • 2:16.0.0-0ubuntu0.20.04.2
    • 2:16.1.0-0ubuntu1
    • 2:16.1.0-0ubuntu2
    • 2:16.2.0-0ubuntu1
    • 2:16.2.0-0ubuntu2
    • 2:16.2.0-0ubuntu3
    • 2:16.3.0-0ubuntu3
    • 2:16.3.1-0ubuntu1
    • 2:16.3.1-0ubuntu1.1
    • 2:16.3.2-0ubuntu2
    • 2:16.3.2-0ubuntu3
    • 2:16.4.0-0ubuntu2
    • 2:16.4.0-0ubuntu3
    • 2:16.4.1-0ubuntu2
    • 2:16.4.2-0ubuntu1
    • 2:16.4.2-0ubuntu2
    • 2:16.4.2-0ubuntu3
    • 2:16.4.2-0ubuntu4
    • 2:16.4.2-0ubuntu5
    • 2:16.4.2-0ubuntu6
    • 2:16.4.2-0ubuntu6.1
    Affected ranges
    • ECOSYSTEM: < 2:16.4.2-0ubuntu6.2

    Update to 2:16.4.2-0ubuntu6.2

Original sources

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