Validating Admission Webhook does not observe some previous fields (Kubernetes Kubernetes)

CVE-2021-25735
MEDIUM 6.5

En bref

Source
NVD
EPSS
EPSS 5.38 % · centile 93 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
kubernetes
Statut NVD
Modified

Description

A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.

Faiblesses (CWE)

  • CWE-372 — Incomplete Internal State Distinction

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Hkubernetes
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:HNVD · jordan@liggitt.net (Secondary)
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:HNVD · nvd@nist.gov (Primary)
CVSS 2.0MEDIUM 5.5AV:N/AC:L/Au:S/C:N/I:P/A:PNVD · nvd@nist.gov (Primary)

Avis

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Kubernetes · Kubernetesaffected unspecified ≤ 1.18.17 ; affected unspecified ≤ 1.19.9 ; affected unspecified ≤ 1.20.5

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD