CVE-2020-8562

Katalog CVE

CVSS 3.1 · Low EPSS 1,1%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada kubernetes. Skor CVSS 3.1 3.1 (Low) menurut NVD.

Deskripsi (NVD)

As mitigations to a report from 2019 and CVE-2020-8555, Kubernetes attempts to prevent proxied connections from accessing link-local or localhost networks when making user-driven connections to Services, Pods, Nodes, or StorageClass service providers. As part of this mitigation Kubernetes does a DNS name resolution check and validates that response IPs are not in the link-local (169.254.0.0/16) or localhost (127.0.0.0/8) range. Kubernetes then performs a second DNS resolution without validation for the actual connection. If a non-standard DNS server returns different non-cached responses, a user may be able to bypass the proxy IP restriction and access private networks on the control plane.

Rincian

Terbit di NVD

1 Februari 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

1,1% peluang dieksploitasi; lebih tinggi dari 64,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/kubernetes/kubernetes/issues/101493 issue tracking · mitigasi · advisory pihak ketiga
• https://groups.google.com/g/kubernetes-security-announce/c/-MFX60_wdOY mailing list · advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20220225-0002/ advisory pihak ketiga
• https://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cves/