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CVE-2020-27836

Estado: ModificadaCrítica (9.8)—

A flaw was found in cluster-ingress-operator. A change to how the router-default service allows only certain IP source ranges could allow an attacker to access resources that would otherwise be restricted to specified IP ranges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability..

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 Container Platform

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-27836",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
          "product": "cluster-ingress-operator",
          "versions": [
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              "version": "Fixed in ose-cluster-ingress-operator-container-v4.6.0-202012161211.p0."
            }
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      ]
    }
  ],
  "published": "2022-08-22T15:15:12.800",
  "references": [
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      "tags": [
        "Vendor Advisory"
      ],
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-732"
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          "value": "CWE-732"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in cluster-ingress-operator. A change to how the router-default service allows only certain IP source ranges could allow an attacker to access resources that would otherwise be restricted to specified IP ranges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo en cluster-ingress-operator. Un cambio en la forma en que el servicio de enrutamiento por defecto permite sólo determinados rangos de origen de IP podría permitir a un atacante acceder a recursos que de otro modo estarían restringidos a rangos de IP especificados. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, así como la disponibilidad del sistema."
    }
  ],
  "lastModified": "2026-06-17T03:09:42.660",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
          "cpeMatch": [
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  "sourceIdentifier": "secalert@redhat.com"
}