Live-migrated instances are briefly able to inspect traffic for other instances on the same hypervisor. This brief window could be extended indefinitely if the instances port is set administratively down prior to live-migration and kept down after the migration is complete. This is possible due to the Open vSwitch integration bridge being connected to the instance during migration. When connected to the integration bridge, all traffic for instances using the same Open vSwitch instance would potentially be visible to the migrated guest, as the required Open vSwitch VLAN filters are only applied post-migration. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3, 11.0.5 are vulnerable.
The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Neutron | Openstack | 7.0.0 (including) | 11.0.4 (including) |
| Neutron | Openstack | 12.0.0 (including) | 12.0.2 (including) |
| Neutron | Openstack | 13.0.0-b1 (including) | 13.0.0-b1 (including) |
| Neutron | Ubuntu | bionic | * |
| Neutron | Ubuntu | esm-infra/xenial | * |
| Neutron | Ubuntu | trusty | * |
| Neutron | Ubuntu | xenial | * |