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CVE-2025-11232

Estado: AplazadaAlta (7.5)—

To trigger the issue, three configuration parameters must have specific settings: "hostname-char-set" must be left at the default setting, which is "[^A-Za-z0-9.-]"; "hostname-char-replacement" must be empty (the default); and "ddns-qualifying-suffix" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly. This issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS AV:N/AC:L/PR:N/UI:N indica acceso remoto sin autenticación ni interacción. Causa DoS por crash del servicio DHCP (Kea) al recibir opción DHCP malformada con configuración específica.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

ISC — KEAAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-11232",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-11232",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-10-29T18:22:07.119804Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-officer@isc.org",
        "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": "security-officer@isc.org",
      "affectedData": [
        {
          "vendor": "ISC",
          "product": "Kea",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.1",
              "versionType": "custom",
              "lessThanOrEqual": "3.0.1"
            },
            {
              "status": "affected",
              "version": "3.1.1",
              "versionType": "custom",
              "lessThanOrEqual": "3.1.2"
            },
            {
              "status": "unaffected",
              "version": "2.6.0",
              "versionType": "custom",
              "lessThanOrEqual": "2.6.4"
            },
            {
              "status": "unaffected",
              "version": "2.7.0",
              "versionType": "custom",
              "lessThanOrEqual": "2.7.9"
            },
            {
              "status": "unaffected",
              "version": "3.0.0",
              "versionType": "custom",
              "lessThanOrEqual": "3.0.0"
            },
            {
              "status": "unaffected",
              "version": "3.1.0",
              "versionType": "custom",
              "lessThanOrEqual": "3.1.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2025-10-29T18:15:40.197",
  "references": [
    {
      "url": "https://kb.isc.org/docs/cve-2025-11232",
      "source": "security-officer@isc.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2025/10/29/5",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-officer@isc.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-823"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "To trigger the issue, three configuration parameters must have specific settings: \"hostname-char-set\" must be left at the default setting, which is \"[^A-Za-z0-9.-]\"; \"hostname-char-replacement\" must be empty (the default); and \"ddns-qualifying-suffix\" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly.\nThis issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2."
    },
    {
      "lang": "es",
      "value": "Para desencadenar el problema, tres parámetros de configuración deben tener ajustes específicos: 'hostname-char-set' debe dejarse en la configuración predeterminada, que es '[^A-Za-z0-9.-]'; 'hostname-char-replacement' debe estar vacío (el valor predeterminado); y 'ddns-qualifying-suffix' NO debe estar vacío (el valor predeterminado es vacío). Las actualizaciones DDNS no necesitan estar habilitadas para que este problema se manifieste. Un cliente que envía cierto contenido de opción provocaría entonces que kea-dhcp4 se cierre inesperadamente. Este problema afecta a las versiones de Kea 3.0.1 a 3.0.1 y 3.1.1 a 3.1.2."
    }
  ],
  "lastModified": "2026-09-30T23:10:00.237",
  "sourceIdentifier": "security-officer@isc.org"
}