Detections
Analytics
SCA: security update for neutron (GHSA-w8hx-f868-pvch)
high Tenable Self-Hosted Container Security Plugin ID 433415
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- 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. (CVE-2021-20267)
See Also
Plugin Details
Severity: High
ID: 433415
Version: Revision 1.3
Type: Local
Family: SCA Checks
Published: 8/19/2025
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3.5
Percentile: 51.63
Vendor
Vendor Severity: High
CVSS v2
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 4.1
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:P
CVSS Score Source: CVE-2021-20267
CVSS v3
Risk Factor: High
Base Score: 7.1
Temporal Score: 6.2
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 7.1
Threat Score: 5
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 5/24/2022
Vulnerability Publication Date: 5/28/2021
Reference Information
CVE: CVE-2021-20267
cwe: CWE-345