Authentication Bypass Affecting openstack-neutron package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.22% (66th percentile)

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  • Snyk IDSNYK-RHEL8-OPENSTACKNEUTRON-21012230
  • published16 Oct 2026
  • disclosed10 Aug 2021

Introduced: 10 Aug 2021

CVE-2021-38598  (opens in a new tab)
CWE-290  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 openstack-neutron.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openstack-neutron package and not the openstack-neutron package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1