CVE-2021-20267 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2021-20267 Interim 1 23 2022-11-27T00:50:22Z current 2021-05-30T14:47:19Z 2022-11-27T00:50:22Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2021-20267 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. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://www.suse.com/support/security/rating/ SUSE Security Ratings HPE Helion OpenStack 8 SUSE OpenStack Cloud 8 SUSE OpenStack Cloud 9 SUSE OpenStack Cloud Crowbar 8 SUSE OpenStack Cloud Crowbar 9 openstack-neutron openstack-neutron-dhcp-agent openstack-neutron-ha-tool openstack-neutron-l3-agent openstack-neutron-linuxbridge-agent openstack-neutron-macvtap-agent openstack-neutron-metadata-agent openstack-neutron-metering-agent openstack-neutron-openvswitch-agent openstack-neutron-server python-neutron openstack-neutron as a component of HPE Helion OpenStack 8 openstack-neutron-dhcp-agent as a component of HPE Helion OpenStack 8 openstack-neutron-ha-tool as a component of HPE Helion OpenStack 8 openstack-neutron-l3-agent as a component of HPE Helion OpenStack 8 openstack-neutron-linuxbridge-agent as a component of HPE Helion OpenStack 8 openstack-neutron-macvtap-agent as a component of HPE Helion OpenStack 8 openstack-neutron-metadata-agent as a component of HPE Helion OpenStack 8 openstack-neutron-metering-agent as a component of HPE Helion OpenStack 8 openstack-neutron-openvswitch-agent as a component of HPE Helion OpenStack 8 openstack-neutron-server as a component of HPE Helion OpenStack 8 python-neutron as a component of HPE Helion OpenStack 8 openstack-neutron as a component of SUSE OpenStack Cloud 8 openstack-neutron-dhcp-agent as a component of SUSE OpenStack Cloud 8 openstack-neutron-ha-tool as a component of SUSE OpenStack Cloud 8 openstack-neutron-l3-agent as a component of SUSE OpenStack Cloud 8 openstack-neutron-linuxbridge-agent as a component of SUSE OpenStack Cloud 8 openstack-neutron-macvtap-agent as a component of SUSE OpenStack Cloud 8 openstack-neutron-metadata-agent as a component of SUSE OpenStack Cloud 8 openstack-neutron-metering-agent as a component of SUSE OpenStack Cloud 8 openstack-neutron-openvswitch-agent as a component of SUSE OpenStack Cloud 8 openstack-neutron-server as a component of SUSE OpenStack Cloud 8 python-neutron as a component of SUSE OpenStack Cloud 8 openstack-neutron as a component of SUSE OpenStack Cloud 9 openstack-neutron-dhcp-agent as a component of SUSE OpenStack Cloud 9 openstack-neutron-ha-tool as a component of SUSE OpenStack Cloud 9 openstack-neutron-l3-agent as a component of SUSE OpenStack Cloud 9 openstack-neutron-linuxbridge-agent as a component of SUSE OpenStack Cloud 9 openstack-neutron-macvtap-agent as a component of SUSE OpenStack Cloud 9 openstack-neutron-metadata-agent as a component of SUSE OpenStack Cloud 9 openstack-neutron-metering-agent as a component of SUSE OpenStack Cloud 9 openstack-neutron-openvswitch-agent as a component of SUSE OpenStack Cloud 9 openstack-neutron-server as a component of SUSE OpenStack Cloud 9 python-neutron as a component of SUSE OpenStack Cloud 9 openstack-neutron as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-dhcp-agent as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-ha-tool as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-l3-agent as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-linuxbridge-agent as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-macvtap-agent as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-metadata-agent as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-metering-agent as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-openvswitch-agent as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron-server as a component of SUSE OpenStack Cloud Crowbar 8 python-neutron as a component of SUSE OpenStack Cloud Crowbar 8 openstack-neutron as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-dhcp-agent as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-ha-tool as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-l3-agent as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-linuxbridge-agent as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-macvtap-agent as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-metadata-agent as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-metering-agent as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-openvswitch-agent as a component of SUSE OpenStack Cloud Crowbar 9 openstack-neutron-server as a component of SUSE OpenStack Cloud Crowbar 9 python-neutron as a component of SUSE OpenStack Cloud Crowbar 9 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. CVE-2021-20267 HPE Helion OpenStack 8:openstack-neutron HPE Helion OpenStack 8:openstack-neutron-dhcp-agent HPE Helion OpenStack 8:openstack-neutron-ha-tool HPE Helion OpenStack 8:openstack-neutron-l3-agent HPE Helion OpenStack 8:openstack-neutron-linuxbridge-agent HPE Helion OpenStack 8:openstack-neutron-macvtap-agent HPE Helion OpenStack 8:openstack-neutron-metadata-agent HPE Helion OpenStack 8:openstack-neutron-metering-agent HPE Helion OpenStack 8:openstack-neutron-openvswitch-agent HPE Helion OpenStack 8:openstack-neutron-server HPE Helion OpenStack 8:python-neutron SUSE OpenStack Cloud 8:openstack-neutron SUSE OpenStack Cloud 8:openstack-neutron-dhcp-agent SUSE OpenStack Cloud 8:openstack-neutron-ha-tool SUSE OpenStack Cloud 8:openstack-neutron-l3-agent SUSE OpenStack Cloud 8:openstack-neutron-linuxbridge-agent SUSE OpenStack Cloud 8:openstack-neutron-macvtap-agent SUSE OpenStack Cloud 8:openstack-neutron-metadata-agent SUSE OpenStack Cloud 8:openstack-neutron-metering-agent SUSE OpenStack Cloud 8:openstack-neutron-openvswitch-agent SUSE OpenStack Cloud 8:openstack-neutron-server SUSE OpenStack Cloud 8:python-neutron SUSE OpenStack Cloud 9:openstack-neutron SUSE OpenStack Cloud 9:openstack-neutron-dhcp-agent SUSE OpenStack Cloud 9:openstack-neutron-ha-tool SUSE OpenStack Cloud 9:openstack-neutron-l3-agent SUSE OpenStack Cloud 9:openstack-neutron-linuxbridge-agent SUSE OpenStack Cloud 9:openstack-neutron-macvtap-agent SUSE OpenStack Cloud 9:openstack-neutron-metadata-agent SUSE OpenStack Cloud 9:openstack-neutron-metering-agent SUSE OpenStack Cloud 9:openstack-neutron-openvswitch-agent SUSE OpenStack Cloud 9:openstack-neutron-server SUSE OpenStack Cloud 9:python-neutron SUSE OpenStack Cloud Crowbar 8:openstack-neutron SUSE OpenStack Cloud Crowbar 8:openstack-neutron-dhcp-agent SUSE OpenStack Cloud Crowbar 8:openstack-neutron-ha-tool SUSE OpenStack Cloud Crowbar 8:openstack-neutron-l3-agent SUSE OpenStack Cloud Crowbar 8:openstack-neutron-linuxbridge-agent SUSE OpenStack Cloud Crowbar 8:openstack-neutron-macvtap-agent SUSE OpenStack Cloud Crowbar 8:openstack-neutron-metadata-agent SUSE OpenStack Cloud Crowbar 8:openstack-neutron-metering-agent SUSE OpenStack Cloud Crowbar 8:openstack-neutron-openvswitch-agent SUSE OpenStack Cloud Crowbar 8:openstack-neutron-server SUSE OpenStack Cloud Crowbar 8:python-neutron SUSE OpenStack Cloud Crowbar 9:openstack-neutron SUSE OpenStack Cloud Crowbar 9:openstack-neutron-dhcp-agent SUSE OpenStack Cloud Crowbar 9:openstack-neutron-ha-tool SUSE OpenStack Cloud Crowbar 9:openstack-neutron-l3-agent SUSE OpenStack Cloud Crowbar 9:openstack-neutron-linuxbridge-agent SUSE OpenStack Cloud Crowbar 9:openstack-neutron-macvtap-agent SUSE OpenStack Cloud Crowbar 9:openstack-neutron-metadata-agent SUSE OpenStack Cloud Crowbar 9:openstack-neutron-metering-agent SUSE OpenStack Cloud Crowbar 9:openstack-neutron-openvswitch-agent SUSE OpenStack Cloud Crowbar 9:openstack-neutron-server SUSE OpenStack Cloud Crowbar 9:python-neutron important 5.5 AV:N/AC:L/Au:S/C:P/I:N/A:P 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H