{
  "id": "CVE-2021-25746",
  "sourceIdentifier": "jordan@liggitt.net",
  "published": "2022-05-06T01:15:09.180",
  "lastModified": "2022-12-02T23:05:30.323",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema de seguridad en ingress-nginx en el que un usuario que puede crear o actualizar objetos ingress puede usar .metadata.annotations en un objeto Ingress (en el grupo networking.k8s.io o extensions API) para obtener las credenciales del controlador ingress-nginx. En la configuraci\u00f3n por defecto, esa credencial presenta acceso a todos los secretos del cl\u00faster"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 7.1,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2
      },
      {
        "source": "jordan@liggitt.net",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW",
          "baseScore": 7.6,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.7
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "SINGLE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.0,
        "impactScore": 4.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "source": "jordan@liggitt.net",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.2.0",
              "matchCriteriaId": "7DD01B7D-743B-41AF-9D8F-D8C6038E6BD0"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/kubernetes/ingress-nginx/issues/8503",
      "source": "jordan@liggitt.net",
      "tags": [
        "Issue Tracking",
        "Mitigation",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQ",
      "source": "jordan@liggitt.net",
      "tags": [
        "Issue Tracking",
        "Mitigation",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20220609-0006/",
      "source": "jordan@liggitt.net",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}