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[email protected]CVE-2020-8559

HistoryJul 22, 2020 - 2:15 p.m.

CVE-2020-8559

2020-07-2214:15:16

CWE-601

[email protected]

web.nvd.nist.gov

231

kubernetes

kube-apiserver

cve-2020-8559

security vulnerability

unvalidated redirect

privilege escalation

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:S/C:P/I:P/A:P

CVSS3

6.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

AI Score

6.6

Confidence

High

EPSS

0.003

Percentile

71.5%

JSON

The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise.

Affected configurations

NVD

Node

kuberneteskubernetesRange1.6.0–1.15.0

kuberneteskubernetesRange1.16.0–1.16.13

kuberneteskubernetesRange1.17.0–1.17.9

kuberneteskubernetesRange1.18.0–1.18.6

VendorProductVersionCPE
kuberneteskubernetescpe:/a:kubernetes:kubernetes::::

Vendor	Product	Version	CPE
kubernetes	kubernetes		cpe:/a:kubernetes:kubernetes::::

CNA Affected

[
  {
    "product": "Kubernetes",
    "vendor": "Kubernetes",
    "versions": [
      {
        "status": "affected",
        "version": "1.6"
      },
      {
        "status": "affected",
        "version": "1.7"
      },
      {
        "status": "affected",
        "version": "1.8"
      },
      {
        "status": "affected",
        "version": "1.9"
      },
      {
        "status": "affected",
        "version": "1.10"
      },
      {
        "status": "affected",
        "version": "1.11"
      },
      {
        "status": "affected",
        "version": "1.12"
      },
      {
        "status": "affected",
        "version": "1.13"
      },
      {
        "status": "affected",
        "version": "1.14"
      },
      {
        "status": "affected",
        "version": "1.15"
      },
      {
        "lessThanOrEqual": "1.16.12",
        "status": "affected",
        "version": "1.16",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "1.17.8",
        "status": "affected",
        "version": "1.17",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "1.18.5",
        "status": "affected",
        "version": "1.18",
        "versionType": "custom"
      }
    ]
  }
]