CVE-2018-5741

Estado: ModificadaMedia (6.5)—

To provide fine-grained controls over the ability to use Dynamic DNS (DDNS) to update records in a zone, BIND 9 provides a feature called update-policy. Various rules can be configured to limit the types of updates that can be performed by a client, depending on the key used when sending the update request.

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Unfortunately, some rule types were not initially documented, and when documentation for them was added to the Administrator Reference Manual (ARM) in change #3112, the language that was added to the ARM at that time incorrectly described the behavior of two rule types, krb5-subdomain and ms-subdomain. This incorrect documentation could mislead operators into believing that policies they had configured were more restrictive than they actually were. This affects BIND versions prior to BIND 9.11.5 and BIND 9.12.3.

CVSS

Versión: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Puntuación base: 6.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 3.48%
Percentil entre todas las CVEs puntuadas: 89
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 (1)

ISC — Bind

CWE

CWE-863

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-5741",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
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          "integrityImpact": "HIGH",
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  "affected": [
    {
      "source": "security-officer@isc.org",
      "affectedData": [
        {
          "vendor": "ISC",
          "product": "BIND 9",
          "versions": [
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              "status": "affected",
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  "published": "2019-01-16T20:29:01.050",
  "references": [
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    {
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-863"
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  "descriptions": [
    {
      "lang": "en",
      "value": "To provide fine-grained controls over the ability to use Dynamic DNS (DDNS) to update records in a zone, BIND 9 provides a feature called update-policy. Various rules can be configured to limit the types of updates that can be performed by a client, depending on the key used when sending the update request. Unfortunately, some rule types were not initially documented, and when documentation for them was added to the Administrator Reference Manual (ARM) in change #3112, the language that was added to the ARM at that time incorrectly described the behavior of two rule types, krb5-subdomain and ms-subdomain. This incorrect documentation could mislead operators into believing that policies they had configured were more restrictive than they actually were. This affects BIND versions prior to BIND 9.11.5 and BIND 9.12.3."
    },
    {
      "lang": "es",
      "value": "Para proporcionar controles detallados sobre la capacidad de emplear DNS dinámico (DDNS) para actualizar registros en una zona, BIND 9 proporciona una característica llamada update-policy. Pueden configurarse varias reglas para limitar los tipos de subidas que pueden ser realizadas por un cliente, dependiendo de la clave empleada al enviar la petición de actualización. Desgraciadamente, algunos tipos de reglas no se documentaron inicialmente y, cuando su documentación se añadió al manual de referencia de administrador (ARM) en el cambio #3112, el texto que se añadió al ARM en ese momento describía el comportamiento de dos tipos de regla, krb5-subdomain y ms-subdomain. Esta documentación incorrecta podría hacer que los operadores piensen que las políticas que han configurado son más restrictivas de lo que lo son en realidad. Esto afecta a BIND en versiones anteriores a la 9.11.5 y BIND 9.12.3."
    }
  ],
  "lastModified": "2026-06-17T02:00:41.920",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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  "sourceIdentifier": "security-officer@isc.org"
}