CVE-2007-3304

Estado: ModificadaMedia (4.7)—
Apache httpd 1.3.37, 2.0.59, and 2.2.4 with the Prefork MPM module, allows local users to cause a denial of service by modifying the worker_score and process_score arrays to reference an arbitrary process ID, which is sent a SIGUSR1 signal from the master process, aka "SIGUSR1 killer."
CVSS

Versión: 2.0
Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C
Puntuación base: 4.7
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 3.30%
Percentil entre todas las CVEs puntuadas: 88
Fecha de la puntuación: 7/10/2026
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 (6)

Apache — Http Server Canonical — Ubuntu Linux Fedoraproject — Fedora Redhat — Enterprise Linux Desktop Redhat — Enterprise Linux Server Redhat — Enterprise Linux Workstation
CWE

NVD-CWE-noinfo
Referencias

JSON original (NVD)

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{
  "id": "CVE-2007-3304",
  "cveTags": [],
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          "baseScore": 4.7,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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  },
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      "affectedData": [
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  "published": "2007-06-20T22:30:00.000",
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      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11589",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apache httpd 1.3.37, 2.0.59, and 2.2.4 with the Prefork MPM module, allows local users to cause a denial of service by modifying the worker_score and process_score arrays to reference an arbitrary process ID, which is sent a SIGUSR1 signal from the master process, aka \"SIGUSR1 killer.\""
    },
    {
      "lang": "es",
      "value": "Apache httpd versiones 1.3.37, 2.0.59 y 2.2.4 con el módulo Prefork MPM, permite a los usuarios locales causar una denegación de servicio por la modificación de las matrices worker_score y process_score para hacer referencia a un ID de proceso arbitrario, al que se envía una señal SIGUSR1 desde el proceso maestro, también se conoce como \"SIGUSR1 killer\"."
    }
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  "lastModified": "2026-06-16T22:41:27.310",
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  "vendorComments": [
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      "comment": "Fixed in Apache HTTP Server 2.2.6, 2.0.61, and 1.3.39:\nhttp://httpd.apache.org/security/vulnerabilities_22.html\nhttp://httpd.apache.org/security/vulnerabilities_20.html\nhttp://httpd.apache.org/security/vulnerabilities_13.html",
      "lastModified": "2008-07-02T00:00:00",
      "organization": "Apache"
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  "sourceIdentifier": "cve@mitre.org"
}