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cve[email protected]CVE-2020-8559
HistoryJul 22, 2020 - 2:15 p.m.

CVE-2020-8559

2020-07-2214:15:16
CWE-601
web.nvd.nist.gov
225
kubernetes
kube-apiserver
cve-2020-8559
security vulnerability
unvalidated redirect
privilege escalation

6.8 Medium

CVSS3

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

6.6 Medium

AI Score

Confidence

High

6 Medium

CVSS2

Access Vector

Access Complexity

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.003 Low

EPSS

Percentile

71.5%

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
kuberneteskubernetesRange1.6.01.15.0
OR
kuberneteskubernetesRange1.16.01.16.13
OR
kuberneteskubernetesRange1.17.01.17.9
OR
kuberneteskubernetesRange1.18.01.18.6

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"
      }
    ]
  }
]

6.8 Medium

CVSS3

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

6.6 Medium

AI Score

Confidence

High

6 Medium

CVSS2

Access Vector

Access Complexity

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.003 Low

EPSS

Percentile

71.5%