CVE-2020-8619

Estado: ModificadaMedia (4.9)—

In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 4.9

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.10%
Percentil entre todas las CVEs puntuadas: 81
Fecha de la puntuación: 5/10/2026

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)

Canonical — Ubuntu Linux Debian — Debian Linux Fedoraproject — Fedora ISC — Bind Netapp — Steelstore Cloud Integrated Storage Opensuse — Leap

CWE

CWE-404

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2020-8619",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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  "published": "2020-06-17T22:15:13.070",
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    },
    {
      "lang": "es",
      "value": "En las versiones ISC BIND9 BIND 9.11.14 -&gt; 9.11.19, BIND 9.14.9 -&gt; 9.14.12, BIND 9.16.0 -&gt; 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -&gt; 9.11.19-S1: A menos que un servidor de nombres proporcione un servicio autorizado para una o más zonas y al menos una zona contenga una entrada sin terminal vacía que contenga un carácter asterisco (\"*\"), este defecto no puede ser encontrado. Un posible atacante al que se le permite cambiar el contenido de la zona, podría introducir teóricamente dicho registro para explotar esta condición y causar una denegación de servicio, aunque consideramos que el uso de este vector es poco probable porque cualquier ataque requeriría de un nivel de privilegio significativo y que sea fácilmente rastreable"
    }
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  "lastModified": "2026-09-01T20:57:40.370",
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