CVE-2021-20267

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Summary

CVECVE-2021-20267
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-05-28 19:15:00 UTC
Updated2022-10-07 03:00:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-345

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openstack Neutron All All All All
Application Openstack Neutron 18.0.0 All All All
Application Redhat Openstack Platform 10.0 All All All
Application Redhat Openstack Platform 13.0 All All All
Application Redhat Openstack Platform 16.1 All All All
Application Redhat Openstack Platform 16.2 All All All

References

ReferenceSourceLinkTags
OSSA-2021-001: Anti-spoofing bypass for Open vSwitch networks — OpenStack Security Advisories 0.0.1.dev236 documentation CONFIRM security.openstack.org
1934330 – (CVE-2021-20267) CVE-2021-20267 openstack-neutron: Anti-spoofing bypass using Open vSwitch MISC bugzilla.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 178820 Debian Security Update for neutron (DSA 4983-1)
  • 179520 Debian Security Update for neutron (CVE-2021-20267)
  • 199327 Ubuntu Security Notification for OpenStack Neutron Vulnerabilities (USN-6067-1)
  • 997512 Python (Pip) Security Update for neutron (GHSA-w8hx-f868-pvch)
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