CVE-2021-20238

Katalog CVE

CVSS 3.7 · Low EPSS 0,77%

Kerentanan Improper Authentication pada redhat openshift container platform, redhat openshift machine-config-operator. Skor CVSS 3.1 3.7 (Low) menurut NVD.

Deskripsi (NVD)

It was found in OpenShift Container Platform 4 that ignition config, served by the Machine Config Server, can be accessed externally from clusters without authentication. The MCS endpoint (port 22623) provides ignition configuration used for bootstrapping Nodes and can include some sensitive data, e.g. registry pull secrets. There are two scenarios where this data can be accessed. The first is on Baremetal, OpenStack, Ovirt, Vsphere and KubeVirt deployments which do not have a separate internal API endpoint and allow access from outside the cluster to port 22623 from the standard OpenShift API Virtual IP address. The second is on cloud deployments when using unsupported network plugins, which do not create iptables rules that prevent to port 22623. In this scenario, the ignition config is exposed to all pods within the cluster and cannot be accessed externally.

Rincian

Terbit di NVD

1 April 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-287: Improper Authentication
CWE-306: Missing Authentication for Critical Function

EPSS (30 hari)

0,77% peluang dieksploitasi; lebih tinggi dari 54,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=1926568 issue tracking · mitigasi · advisory vendor