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CVE-2010-3494

Estado: ModificadaMedia (4.3)—

Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492.

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)

G.rodola — Pyftpdlib

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2010-3494",
  "cveTags": [],
  "metrics": {
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        "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
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          "versions": [
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              "status": "affected",
              "version": "n/a"
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        }
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  ],
  "published": "2010-10-19T20:00:04.330",
  "references": [
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      "url": "http://bugs.python.org/issue6706",
      "tags": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Race condition in the FTPHandler class in ftpserver.py in pyftpdlib before 0.5.2 allows remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, a related issue to CVE-2010-3492."
    },
    {
      "lang": "es",
      "value": "Condición de carrera en la clase FTPHandler en ftpserver.py en pyftpdlib anterior a v0.5.2, permite a atacantes remotos provocar una denegación de servicio (agotamiento de demonio) estableciendo e inmediatamente cerrando una conexión TCP, permitiendo aceptar la función teniendo un valor \"None\" no esperado para la dirección, o un error EWOULDBLOCK. Relacionado con CVE-2010-3492."
    }
  ],
  "lastModified": "2026-06-16T23:22:53.010",
  "configurations": [
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