CVEvulnerability

CVE-2021-38598

9.1 CRITICAL Published 2021-08-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-08-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS 2.0 ([email protected])
5.8 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:P
Weaknesses
CWE-290

Description

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.

Affected configurations

• openstack neutron (< 16.4.1) • openstack neutron (>= 17.0.0 < 17.1.3) • openstack neutron 18.0.0

Related

Weakness · CWE (1)

  • CWE-290 Authentication Bypass by Spoofing weakness

References