GitHub Advisoryadvisory · PyPI

GHSA-w8hx-f868-pvch Openstack Neutron has Insufficient Verification of IPv6 addresses

HIGH Published 2022-05-24 Modified 2024-09-26 Official page ↗
Aliases
CVE-2021-20267
Ecosystem
PyPI
Packages
neutron
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Weaknesses
CWE-345
Reviewed
2024-02-23

Affected packages

• PyPI neutron: >= 16.0.0, < 16.3.1 → fixed in 16.3.1 • PyPI neutron: < 15.3.3 → fixed in 15.3.3 • PyPI neutron: >= 17.0.0, < 17.1.1 → fixed in 17.1.1

Description

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.

Related

Alias · CVE (1)

  • CVE-2021-20267 A flaw was found in openstack-neutron's default Open vSwitch firewall rules. vulnerability

Weakness · CWE (1)

  • CWE-345 Insufficient Verification of Data Authenticity weakness

References