{
  "id": "CVE-2020-8559",
  "sourceIdentifier": "jordan@liggitt.net",
  "published": "2020-07-22T14:15:16.517",
  "lastModified": "2023-01-27T20:34:52.773",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "El Kubernetes kube-apiserver en versiones v1.6-v1.15 y versiones anteriores a v1.16.13, v1.17.9 y v1.18.6, son vulnerables a un redireccionamiento no validado en las peticiones de actualizaci\u00f3n proxy que podr\u00edan permitir a un atacante escalar privilegios desde un compromiso de nodo a un compromiso del cl\u00faster completo"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 5.9
      },
      {
        "source": "jordan@liggitt.net",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "HIGH",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 0.5,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 6.8,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    },
    {
      "source": "jordan@liggitt.net",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.6.0",
              "versionEndIncluding": "1.15.0",
              "matchCriteriaId": "43222A9D-6D48-490F-8120-349DCE1C1218"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.16.0",
              "versionEndExcluding": "1.16.13",
              "matchCriteriaId": "FE1EA8C5-2EF4-4462-B693-FE20B3DF75C6"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.17.0",
              "versionEndExcluding": "1.17.9",
              "matchCriteriaId": "CC1FA454-87A3-480C-BB5E-A23086E2EA99"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.18.0",
              "versionEndExcluding": "1.18.6",
              "matchCriteriaId": "3E4009BA-8220-4B8E-8B4B-1ADA1680DD70"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/kubernetes/kubernetes/issues/92914",
      "source": "jordan@liggitt.net",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJ",
      "source": "jordan@liggitt.net",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20200810-0004/",
      "source": "jordan@liggitt.net",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}