CVE-2019-25076
Published: 8 September 2022
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | as of 2024-02-02, doesn't appear to be an upstream fix available for this issue. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openvswitch Launchpad, Ubuntu, Debian |
bionic |
Deferred
|
| focal |
Deferred
|
|
| jammy |
Deferred
|
|
| kinetic |
Ignored
(end of life, was deferred)
|
|
| lunar |
Ignored
(end of life, was deferred)
|
|
| mantic |
Deferred
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Deferred
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L |