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CVE-2020-35514

Estado: ModificadaAlta (7)—

An insecure modification flaw in the /etc/kubernetes/kubeconfig file was found in OpenShift. This flaw allows an attacker with access to a running container which mounts /etc/kubernetes or has local access to the node, to copy this kubeconfig file and attempt to add their own node to the OpenShift cluster. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects versions before openshift4/ose-machine-config-operator v4.7.0-202105111858.p0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Redhat — Openshift

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-35514",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.4,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "openshift/machine-config-operator",
          "versions": [
            {
              "status": "affected",
              "version": "Unspecified"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-02T14:15:09.577",
  "references": [
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1914714",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1914714",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-266"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An insecure modification flaw in the /etc/kubernetes/kubeconfig file was found in OpenShift. This flaw allows an attacker with access to a running container which mounts /etc/kubernetes or has local access to the node, to copy this kubeconfig file and attempt to add their own node to the OpenShift cluster. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects versions before openshift4/ose-machine-config-operator v4.7.0-202105111858.p0."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un fallo de modificación no segura en el archivo /etc/kubernetes/kubeconfig en OpenShift. Este fallo permite a un atacante con acceso a un contenedor en ejecución que monta el archivo /etc/kubernetes o que tiene acceso local al nodo, copiar este archivo kubeconfig e intentar añadir su propio nodo al clúster de OpenShift. La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad, así como la disponibilidad del sistema. Este fallo afecta a versiones anteriores a openshift4/ose-machine-config-operator v4.7.0-202105111858.p0"
    }
  ],
  "lastModified": "2026-06-17T03:13:50.913",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:openshift:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AC917AC2-DD18-4DD6-80B4-4A1BE1A62D10",
              "versionEndExcluding": "4.7.0"
            },
            {
              "criteria": "cpe:2.3:a:redhat:openshift:4.7.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5D5A79FB-491F-4030-8F6F-C3691F9D7D58"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "secalert@redhat.com"
}