FKIE_CVE-2025-11232

Vulnerability from fkie_nvd - Published: 2025-10-29 18:15 - Updated: 2026-09-30 23:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
security-officer@isc.orghttps://kb.isc.org/docs/cve-2025-11232
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/10/29/5
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Kea",
          "vendor": "ISC",
          "versions": [
            {
              "lessThanOrEqual": "3.0.1",
              "status": "affected",
              "version": "3.0.1",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "3.1.2",
              "status": "affected",
              "version": "3.1.1",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2.6.4",
              "status": "unaffected",
              "version": "2.6.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2.7.9",
              "status": "unaffected",
              "version": "2.7.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "3.0.0",
              "status": "unaffected",
              "version": "3.0.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "3.1.0",
              "status": "unaffected",
              "version": "3.1.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security-officer@isc.org"
    }
  ],
  "cveTags": [],
  "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 par\u00e1metros de configuraci\u00f3n deben tener ajustes espec\u00edficos: \u0027hostname-char-set\u0027 debe dejarse en la configuraci\u00f3n predeterminada, que es \u0027[^A-Za-z0-9.-]\u0027; \u0027hostname-char-replacement\u0027 debe estar vac\u00edo (el valor predeterminado); y \u0027ddns-qualifying-suffix\u0027 NO debe estar vac\u00edo (el valor predeterminado es vac\u00edo). Las actualizaciones DDNS no necesitan estar habilitadas para que este problema se manifieste. Un cliente que env\u00eda cierto contenido de opci\u00f3n provocar\u00eda 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."
    }
  ],
  "id": "CVE-2025-11232",
  "lastModified": "2026-09-30T23:10:00.237",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "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:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-officer@isc.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-11232",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-29T18:22:07.119804Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-10-29T18:15:40.197",
  "references": [
    {
      "source": "security-officer@isc.org",
      "url": "https://kb.isc.org/docs/cve-2025-11232"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2025/10/29/5"
    }
  ],
  "sourceIdentifier": "security-officer@isc.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-823"
        }
      ],
      "source": "security-officer@isc.org",
      "type": "Secondary"
    }
  ]
}



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