CVE-2021-38598
Published: 23 August 2021
OpenStack Neutron before 16.4.1, 17.x before 17.1.3, and 18.0.0 allows hardware address impersonation when the linuxbridge driver with ebtables-nft is used on a Netfilter-based platform. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the hardware addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations.
Notes
| Author | Note |
|---|---|
| mdeslaur | This issue was fixed in (2:16.4.1-0ubuntu2) in focal-updates and (2:18.1.0-0ubuntu2) in hirsute-updates, and was later released to -security. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
neutron Launchpad, Ubuntu, Debian |
bionic |
Released
(2:12.1.1-0ubuntu8.1)
|
| focal |
Released
(2:16.4.2-0ubuntu6.2)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Not vulnerable
(2:18.1.0+git2021072117.147830620f-0ubuntu2)
|
|
| jammy |
Not vulnerable
(2:18.1.0+git2021072117.147830620f-0ubuntu2)
|
|
| kinetic |
Not vulnerable
(2:18.1.0+git2021072117.147830620f-0ubuntu2)
|
|
| lunar |
Not vulnerable
(2:18.1.0+git2021072117.147830620f-0ubuntu2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(2:18.1.0-2)
|
|
| xenial |
Needs triage
|
|
|
Patches: upstream: https://opendev.org/openstack/neutron/commit/4245963c71280bebd94e9005230d610931a7c2df (train) |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.1 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |