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CVE-2021-3509

Estado: ModificadaMedia (6.1)—

A flaw was found in Red Hat Ceph Storage 4, in the Dashboard component. In response to CVE-2020-27839, the JWT token was moved from localStorage to an httpOnly cookie. However, token cookies are used in the body of the HTTP response for the documentation, which again makes it available to XSS.The greatest threat to the system is for confidentiality, integrity, and 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 — Ceph Storage

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-3509",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "ceph-dashboard",
          "versions": [
            {
              "status": "affected",
              "version": "as shipped in Red Hat Ceph Storage 4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-05-27T00:15:08.577",
  "references": [
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1950116",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
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    },
    {
      "url": "https://github.com/ceph/ceph/blob/f1557e8f62d31883d3d34ae241a1a26af11d923f/src/pybind/mgr/dashboard/controllers/docs.py#L394-L409",
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    },
    {
      "url": "https://github.com/ceph/ceph/commit/7a1ca8d372da3b6a4fc3d221a0e5f72d1d61c27b",
      "tags": [
        "Patch",
        "Third Party Advisory"
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      "source": "secalert@redhat.com"
    },
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      "tags": [
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      "source": "secalert@redhat.com"
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      "url": "https://github.com/ceph/ceph/commit/af3fffab3b0f13057134d96e5d481e400d8bfd27",
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    {
      "url": "https://github.com/ceph/ceph/blob/f1557e8f62d31883d3d34ae241a1a26af11d923f/src/pybind/mgr/dashboard/controllers/docs.py#L394-L409",
      "tags": [
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/ceph/ceph/commit/af3fffab3b0f13057134d96e5d481e400d8bfd27",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Red Hat Ceph Storage 4, in the Dashboard component. In response to CVE-2020-27839, the JWT token was moved from localStorage to an httpOnly cookie. However, token cookies are used in the body of the HTTP response for the documentation, which again makes it available to XSS.The greatest threat to the system is for confidentiality, integrity, and availability."
    },
    {
      "lang": "es",
      "value": "Se encontró un fallo en Red Hat Ceph Storage 4, en el componente Dashboard. En respuesta a CVE-2020-27839, el token JWT fue movido de localStorage a una cookie httpOnly. Sin embargo, las cookies de token son usados en el cuerpo de la respuesta HTTP para la documentación, que de nuevo lo pone a disposición de un ataque de tipo XSS. La mayor amenaza para el sistema es la confidencialidad, integridad y disponibilidad"
    }
  ],
  "lastModified": "2026-06-17T04:05:15.613",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D6E54096-5D45-4CB2-AC9A-DDB55BF2B94C"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "secalert@redhat.com"
}