CVE-2009-0692

Estado: ModificadaAlta (10)—
Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
CVSS

Versión: 2.0
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Puntuación base: 10
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 26%
Percentil entre todas las CVEs puntuadas: 98
Fecha de la puntuación: 6/10/2026
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)

ISC — Dhcp
CWE

CWE-119
Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-0692",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/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": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cret@cert.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-07-14T20:30:00.217",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de búfer basado en pila en el método script_write_params en client/dhclient.c en ISC DHCP dhclient v4.1 anteriores a  v4.1.0p1, v4.0 anteriores a  v4.0.1p1, v3.1 anteriores a v3.1.2p1, v3.0, y v2.0 permite a servidores DHCP remotos ejecutar código arbitrario a través de una opción manipulada subnet-mask."
    }
  ],
  "lastModified": "2026-06-16T23:05:34.917",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:isc:dhcp:2.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CC3F60D5-1AC2-4FBD-9CA5-775F082D339D"
            },
            {
              "criteria": "cpe:2.3:a:isc:dhcp:3.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "648BBC1F-1792-443F-B625-67A05004EB7E"
            },
            {
              "criteria": "cpe:2.3:a:isc:dhcp:3.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EE9B9007-1F13-4991-B44C-47D8EB56FB99"
            },
            {
              "criteria": "cpe:2.3:a:isc:dhcp:4.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "685EB87F-756C-4DBA-A347-171470EA0B47"
            },
            {
              "criteria": "cpe:2.3:a:isc:dhcp:4.1.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "41B46352-9D4D-4C74-876F-3685016025CC"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "This issue affected the dhcp packages as shipped with Red Hat Enterprise Linux 3 and 4. Updated packages to correct this issue are available via Red Hat Network:\n\nhttps://rhn.redhat.com/errata/CVE-2009-0692.html\n\nThis issue did not affect the dhcp packages as shipped with Red Hat Enterprise Linux 5 due to the use of FORTIFY_SOURCE protection mechanism that changes the exploitability of the issue into a controlled application termination.",
      "lastModified": "2009-07-16T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cret@cert.org"
}