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CVE-2005-2871

Estado: ModificadaAlta (7.5)—💥 Exploit

Desbordamiento de búfer en el soporte de nombres de dominio internacionales (IDN) de Mozilla Firefox 1.0.6 y anteriores, y de Netscape 8.0.3.3 y 7.2, que permite a atacantes remotos provocar una denegación de servicio (caída) y, posiblemente, ejecutar código arbitrario mediante un nombre de host formado únicamente por guiones "blandos" (carácter 0xAD), que no es gestionado correctamente por la llamada a NormalizeIDN en nsStandardURL::BuildNormalizedSpec.

Traducción automática del texto original de NVD (en inglés).

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

Mozilla — Firefox

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2005-2871",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": true,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2005-09-09T18:03:00.000",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2005-09/0316.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://marc.info/?l=full-disclosure&m=112624614008387&w=2",
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    },
    {
      "url": "http://secunia.com/advisories/16764",
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    {
      "url": "http://secunia.com/advisories/17042",
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    },
    {
      "url": "http://secunia.com/advisories/17090",
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    {
      "url": "http://secunia.com/advisories/17263",
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      "url": "http://www.ciac.org/ciac/bulletins/p-303.shtml",
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      "url": "http://www.osvdb.org/19255",
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      "url": "http://www.redhat.com/support/errata/RHSA-2005-768.html",
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      "url": "http://www.ubuntu.com/usn/usn-181-1",
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      "url": "http://www.vupen.com/english/advisories/2005/1824",
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    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=307259",
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    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/22207",
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      "url": "http://www.debian.org/security/2005/dsa-837",
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      "url": "http://www.kb.cert.org/vuls/id/573857",
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      "url": "http://www.securityfocus.com/bid/14784",
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      "url": "http://www.ubuntu.com/usn/usn-181-1",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1287",
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    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A584",
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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": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in the International Domain Name (IDN) support in Mozilla Firefox 1.0.6 and earlier, and Netscape 8.0.3.3 and 7.2, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a hostname with all \"soft\" hyphens (character 0xAD), which is not properly handled by the NormalizeIDN call in nsStandardURL::BuildNormalizedSpec."
    }
  ],
  "lastModified": "2026-06-16T22:15:49.680",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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          "operator": "OR"
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  "sourceIdentifier": "secalert@redhat.com"
}