7.1

CVE-2021-20267

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.

Data is provided by the National Vulnerability Database (NVD)
Openstack ≫ Neutron Version < 16.3.3
Openstack ≫ Neutron Version >= 17.0.0 < 17.1.3
Openstack ≫ Neutron Version18.0.0
Redhat ≫ Openstack Platform Version10.0
Redhat ≫ Openstack Platform Version13.0
Redhat ≫ Openstack Platform Version16.1
Redhat ≫ Openstack Platform Version16.2
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.12% 0.322
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.1 2.8 4.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
nvd@nist.gov 5.5 8 4.9
AV:N/AC:L/Au:S/C:P/I:N/A:P
CWE-345 Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

https://bugzilla.redhat.com/show_bug.cgi?id=1934330
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