CVE-2021-38598
Publication date 23 August 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
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.
Status
Package | Ubuntu Release | Status |
---|---|---|
neutron | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Fixed 2:16.4.2-0ubuntu6.2
|
|
18.04 LTS bionic |
Fixed 2:12.1.1-0ubuntu8.1
|
|
16.04 LTS xenial |
Needs evaluation
|
|
14.04 LTS trusty | Not in release |
Notes
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.
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.1 · Critical |
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 |
References
Related Ubuntu Security Notices (USN)
- USN-6067-1
- OpenStack Neutron vulnerabilities
- 10 May 2023