The TSS (Tuple Space Search) algorithm in Open vSwitch 2.x through 2.17.2 and 3.0.0 allows remote attackers to cause a denial of service (delays of legitimate traffic) via crafted packet data that requires excessive evaluation time within the packet classification algorithm for the MegaFlow cache, aka a Tuple Space Explosion (TSE) attack.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openvswitch | Openvswitch | 2.0.0 (including) | 2.17.2 (including) |
| Openvswitch | Openvswitch | 3.0.0 (including) | 3.0.0 (including) |
| Openvswitch | Ubuntu | bionic | * |
| Openvswitch | Ubuntu | kinetic | * |
| Openvswitch | Ubuntu | lunar | * |
| Openvswitch | Ubuntu | mantic | * |
| Openvswitch | Ubuntu | trusty | * |
| Openvswitch | Ubuntu | xenial | * |