CVE-2021-20267

Katalog CVE

CVSS 7.1 · High EPSS 1,0%

Kerentanan Insufficient Verification of Data Authenticity pada openstack neutron, redhat openstack platform. Skor CVSS 3.1 7.1 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

28 Mei 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.1 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-345: Insufficient Verification of Data Authenticity

EPSS (30 hari)

1,0% peluang dieksploitasi; lebih tinggi dari 62,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.openstack.org/ossa/OSSA-2021-001.html patch · advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=1934330 issue tracking · patch · advisory pihak ketiga