FKIE_CVE-2021-27793

Vulnerability from fkie_nvd - Published: 2021-08-12 15:15 - Updated: 2026-06-17 03:45
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
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.
References
sirt@brocade.comhttps://security.netapp.com/advisory/ntap-20210819-0001/Third Party Advisory
sirt@brocade.comhttps://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210819-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553Vendor Advisory
Impacted products
Vendor Product Version
broadcom fabric_operating_system *
broadcom fabric_operating_system *
broadcom fabric_operating_system 8.2.3
broadcom fabric_operating_system 9.0.1
broadcom fabric_operating_system 9.0.1a
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Brocade Fabric OS",
          "vendor": "n/a",
          "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"
            }
          ]
        }
      ],
      "source": "sirt@brocade.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "85D187BF-39F3-4AA9-BDBA-3EE1C4428536",
              "versionEndExcluding": "8.2.3",
              "versionStartIncluding": "8.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "23C9EA56-CB9E-4216-80FE-1FFB7A6FFA09",
              "versionEndExcluding": "9.0.1",
              "versionStartIncluding": "9.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:8.2.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "8B8758BE-527C-40EA-BFE6-848A1C87723F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:9.0.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "3AAD9957-CACE-472A-86F5-144AEA651948",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:9.0.1a:*:*:*:*:*:*:*",
              "matchCriteriaId": "73C4B568-2A94-43F0-9F71-6D1206D59964",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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 autorizaci\u00f3n intermitente en aaa tacacs+ con las versiones de Brocade Fabric OS anteriores a v9.0.1b y posteriores a 9.0.0, tambi\u00e9n en Brocade Fabric OS versiones anteriores a v8.2.3a y posteriores a v8.2.0, podr\u00eda causar que un usuario con una cuenta v\u00e1lida no pudiera iniciar sesi\u00f3n en el switch"
    }
  ],
  "id": "CVE-2021-27793",
  "lastModified": "2026-06-17T03:45:27.930",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-12T15:15:07.817",
  "references": [
    {
      "source": "sirt@brocade.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210819-0001/"
    },
    {
      "source": "sirt@brocade.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210819-0001/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553"
    }
  ],
  "sourceIdentifier": "sirt@brocade.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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