Insufficient Verification of Data Authenticity Affecting openstack-neutron-rpc-server package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-RHEL8-OPENSTACKNEUTRONRPCSERVER-4374399
  • published26 Mar 2023
  • disclosed5 Nov 2020

Introduced: 5 Nov 2020

CVE-2021-20267  (opens in a new tab)
CWE-345  (opens in a new tab)

How to fix?

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

NVD Description

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

A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.

CVSS Scores

version 3.1