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CVE-2019-11721

Estado: ModificadaMedia (6.5)—

El carácter latino 'kra' de Unicode puede ser usado para falsificar un carácter 'k' estándar en la barra de direcciones. Esto permite que los ataques de suplantación de dominio no se muestren como texto de código púny, lo que permite la confusión del usuario. Esta vulnerabilidad afecta a Firefox anterior a versión 68.

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 (2)

Mozilla — FirefoxOpensuse — Leap

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2019-11721",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
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  "affected": [
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      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "68",
              "versionType": "custom"
            }
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  "published": "2019-07-23T14:15:16.187",
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The unicode latin 'kra' character can be used to spoof a standard 'k' character in the addressbar. This allows for domain spoofing attacks as do not display as punycode text, allowing for user confusion. This vulnerability affects Firefox < 68."
    },
    {
      "lang": "es",
      "value": "El carácter latino 'kra' de Unicode puede ser usado para falsificar un carácter 'k' estándar en la barra de direcciones. Esto permite que los ataques de suplantación de dominio no se muestren como texto de código púny, lo que permite la confusión del usuario. Esta vulnerabilidad afecta a Firefox anterior a versión 68."
    }
  ],
  "lastModified": "2026-06-17T02:13:30.300",
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}