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CVE-2021-27790

Estado: ModificadaAlta (7.8)—

The command ipfilter in Brocade Fabric OS before Brocade Fabric OS v.9.0.1a, v8.2.3, and v8.2.0_CBN4, and v7.4.2h uses unsafe string function to process user input. Authenticated attackers can abuse this vulnerability to exploit stack-based buffer overflows, allowing execution of arbitrary code as the root user account.

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-2021-27790",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "sirt@brocade.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Brocade Fabric OS",
          "versions": [
            {
              "status": "affected",
              "version": "Brocade Fabric OS before Brocade Fabric OS v.9.0.1a, v8.2.3, and v8.2.0_CBN4, and v7.4.2h"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-08-12T15:15:07.697",
  "references": [
    {
      "url": "https://security.netapp.com/advisory/ntap-20210819-0002/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "sirt@brocade.com"
    },
    {
      "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1492",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "sirt@brocade.com"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20210819-0002/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1492",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The command ipfilter in Brocade Fabric OS before Brocade Fabric OS v.9.0.1a, v8.2.3, and v8.2.0_CBN4, and v7.4.2h uses unsafe string function to process user input. Authenticated attackers can abuse this vulnerability to exploit stack-based buffer overflows, allowing execution of arbitrary code as the root user account."
    },
    {
      "lang": "es",
      "value": "El comando ipfilter en Brocade Fabric OS versiones anteriores a Brocade Fabric OS v.9.0.1a, v8.2.3, y v8.2.0_CBN4, y v7.4.2h, usa una función de cadena no segura para procesar la entrada del usuario. Unos atacantes autenticados pueden abusar de esta vulnerabilidad para explotar unos desbordamientos de búfer en la región stack de la memoria, permitiendo una ejecución de código arbitrario como la cuenta de usuario root."
    }
  ],
  "lastModified": "2026-06-17T03:45:27.623",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "942EE264-4FE0-45C7-A111-0137C18C3962",
              "versionEndExcluding": "7.4.2h"
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "61DD246D-373A-4035-814B-6961A1AEF2A9",
              "versionEndExcluding": "8.2.0_cbn4",
              "versionStartIncluding": "8.0.0"
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "32439844-2E32-49D9-9584-F24DF1E4B053",
              "versionEndExcluding": "8.2.3",
              "versionStartIncluding": "8.2.1"
            },
            {
              "criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6D7BD6F1-04FE-45C8-9154-70DBDC01A31F",
              "versionEndExcluding": "9.0.1a",
              "versionStartIncluding": "9.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "sirt@brocade.com"
}