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CVE-2021-25742

Estado: ModificadaAlta (7.1)—

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the custom snippets feature to obtain all secrets in the cluster.

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 (2)

Kubernetes — Ingress-nginxNetapp — Trident

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-25742",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "jordan@liggitt.net",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.6,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
          "integrityImpact": "LOW",
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          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "jordan@liggitt.net",
      "affectedData": [
        {
          "vendor": "Kubernetes",
          "product": "Kubernetes ingress-nginx",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "0.49.0"
            },
            {
              "status": "unknown",
              "version": "next of 0.49.0",
              "lessThan": "unspecified",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "1.0.0"
            },
            {
              "status": "unknown",
              "version": "next of 1.0.0",
              "lessThan": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-29T04:15:08.220",
  "references": [
    {
      "url": "https://github.com/kubernetes/ingress-nginx/issues/7837",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Mitigation",
        "Third Party Advisory"
      ],
      "source": "jordan@liggitt.net"
    },
    {
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/mT4JJxi9tQY",
      "tags": [
        "Mailing List",
        "Mitigation",
        "Third Party Advisory"
      ],
      "source": "jordan@liggitt.net"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20211203-0001/",
      "tags": [
        "Third Party Advisory"
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      "source": "jordan@liggitt.net"
    },
    {
      "url": "https://github.com/kubernetes/ingress-nginx/issues/7837",
      "tags": [
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/mT4JJxi9tQY",
      "tags": [
        "Mailing List",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://security.netapp.com/advisory/ntap-20211203-0001/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "jordan@liggitt.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the custom snippets feature to obtain all secrets in the cluster."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema de seguridad en ingress-nginx donde un usuario que puede crear o actualizar objetos de entrada puede usar la función de fragmentos personalizados para obtener todos los secretos del clúster"
    }
  ],
  "lastModified": "2026-06-17T03:42:23.243",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CEC0CA26-0429-4DD1-904B-5C7637C42704",
              "versionEndExcluding": "0.49.1"
            },
            {
              "criteria": "cpe:2.3:a:kubernetes:ingress-nginx:1.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8DA09AFA-48CD-4A55-9C15-A96249C704D0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
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            }
          ],
          "operator": "OR"
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      ]
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  ],
  "sourceIdentifier": "jordan@liggitt.net"
}