« Volver al listado

CVE-2021-27793

Estado: ModificadaMedia (5.3)—

ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.

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)

Broadcom — Fabric Operating System

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-27793",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "sirt@brocade.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Brocade Fabric OS",
          "versions": [
            {
              "status": "affected",
              "version": "Versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also before Brocade Fabric OS v8.2.3a and after v8.2.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-08-12T15:15:07.817",
  "references": [
    {
      "url": "https://security.netapp.com/advisory/ntap-20210819-0001/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "sirt@brocade.com"
    },
    {
      "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "sirt@brocade.com"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20210819-0001/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch."
    },
    {
      "lang": "es",
      "value": "Un fallo de autorización intermitente en aaa tacacs+ con las versiones de Brocade Fabric OS anteriores a v9.0.1b y posteriores a 9.0.0, también en Brocade Fabric OS versiones anteriores a v8.2.3a y posteriores a v8.2.0, podría causar que un usuario con una cuenta válida no pudiera iniciar sesión en el switch"
    }
  ],
  "lastModified": "2026-06-17T03:45:27.930",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "85D187BF-39F3-4AA9-BDBA-3EE1C4428536",
              "versionEndExcluding": "8.2.3",
              "versionStartIncluding": "8.2.0"
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "23C9EA56-CB9E-4216-80FE-1FFB7A6FFA09",
              "versionEndExcluding": "9.0.1",
              "versionStartIncluding": "9.0.0"
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:8.2.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8B8758BE-527C-40EA-BFE6-848A1C87723F"
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:9.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3AAD9957-CACE-472A-86F5-144AEA651948"
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:9.0.1a:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "73C4B568-2A94-43F0-9F71-6D1206D59964"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "sirt@brocade.com"
}