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CVE-2021-23032

Estado: ModificadaAlta (7.5)—

On version 16.x before 16.1.0, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.4, and all versions of 13.1.x and 12.1.x, when a BIG-IP DNS system is configured with non-default Wide IP and pool settings, undisclosed DNS responses can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

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)

F5 — Big-ip Domain Name System

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-23032",
  "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:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "f5sirt@f5.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "BIG-IP DNS",
          "versions": [
            {
              "status": "affected",
              "version": "16.x before 16.1.0, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.4, and all versions of 13.1.x and 12.1.x"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-09-14T18:15:08.070",
  "references": [
    {
      "url": "https://support.f5.com/csp/article/K45407662",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "f5sirt@f5.com"
    },
    {
      "url": "https://support.f5.com/csp/article/K45407662",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "f5sirt@f5.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "On version 16.x before 16.1.0, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.4, and all versions of 13.1.x and 12.1.x, when a BIG-IP DNS system is configured with non-default Wide IP and pool settings, undisclosed DNS responses can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
    },
    {
      "lang": "es",
      "value": "En versiones 16.x anteriores a 16.1.0, versiones 15.1.x anteriores a 15.1.3.1, versiones 14.1.x anteriores a 14.1.4.4, y todas las versiones de 13.1.x y 12.1.x, cuando un sistema BIG-IP DNS está configurado con una IP amplia y una configuración de pool no predeterminadas, las respuestas DNS no divulgadas pueden causar la terminación del Traffic Management Microkernel (TMM). Nota: Las versiones de software que han alcanzado End of Technical Support (EoTS) no son evaluadas"
    }
  ],
  "lastModified": "2026-06-17T03:38:14.843",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F489E5B1-1EC4-4E45-8EE6-6A4FCD0F386F",
              "versionEndIncluding": "12.1.6",
              "versionStartIncluding": "12.1.0"
            },
            {
              "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F82E9A35-A3E2-4915-BE23-B321C18BE6C3",
              "versionEndIncluding": "13.1.4",
              "versionStartIncluding": "13.1.0"
            },
            {
              "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5C35120-3778-4B39-8FC7-617DB3563A3A",
              "versionEndExcluding": "14.1.4.4",
              "versionStartIncluding": "14.1.0"
            },
            {
              "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F9520702-C1E2-42A2-914A-C1A248D36C96",
              "versionEndExcluding": "15.1.3.1",
              "versionStartIncluding": "15.1.0"
            },
            {
              "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B482DB60-D251-4478-83C9-073EE0759BF4",
              "versionEndExcluding": "16.1.0",
              "versionStartIncluding": "16.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "f5sirt@f5.com"
}