neutron-common: A flaw was found in openstack-neutron's default Open vSwitch firewall rules
CVE-2021-20267 is fixed in 17 products on 1 platform, first by neutron-common 2:12.1.1-0ubuntu8.1, released March 6, 2023. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| neutron-common · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-common 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-common · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-common 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-dhcp-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-dhcp-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-dhcp-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-dhcp-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-l3-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-l3-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-l3-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-l3-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-linuxbridge-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-linuxbridge-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-linuxbridge-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-linuxbridge-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-macvtap-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-macvtap-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-macvtap-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-macvtap-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-metadata-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-metadata-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-metadata-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-metadata-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-metering-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-metering-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-metering-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-metering-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-openvswitch-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-openvswitch-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-openvswitch-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-openvswitch-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-ovn-metadata-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-ovn-metadata-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-plugin-linuxbridge-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-plugin-linuxbridge-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-plugin-ml2 · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-plugin-ml2 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-plugin-ml2 · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-plugin-ml2 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-plugin-openvswitch-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-plugin-openvswitch-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-plugin-sriov-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-plugin-sriov-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-server · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-server 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-server · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-server 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| neutron-sriov-agent · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | neutron-sriov-agent 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| neutron-sriov-agent · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | neutron-sriov-agent 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
| python-neutron · Ubuntu 18.04.6 LTS (bionic) | 2:12.1.1-0ubuntu8.1 | python-neutron 2:12.1.1-0ubuntu8.1 | Mar 6, 2023 |
| python3-neutron · Ubuntu 20.04 LTS (focal) | 2:16.4.2-0ubuntu6.2 | python3-neutron 2:16.4.2-0ubuntu6.2 | Mar 6, 2023 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.