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CVE-2020-25829

Estado: ModificadaAlta (7.5)—

An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).

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 (3)

Opensuse — Backports SLEOpensuse — LeapPowerdns — Recursor

CWE

Referencias

JSON original (NVD)

Mostrar
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
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          "confidentialityImpact": "NONE"
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  "affected": [
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  "published": "2020-10-16T06:15:12.357",
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  "vulnStatus": "Modified",
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      "value": "An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process)."
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      "value": "Se ha encontrado un problema en PowerDNS Recursor versiones anteriores a 4.1.18, versiones 4.2.x anteriores a 4.2.5 y versiones 4.3.x anteriores a 4.3.5. Un atacante remoto puede causar que los registros en caché para un nombre dado sean actualizados al estado de comprobación de Bogus DNSSEC, en lugar de su estado DNSSEC Secure real, por medio de una consulta ANY de DNS. Esto resulta en una denegación de servicio para la instalación que siempre comprueba (dnssec=validate) y para los clientes que requieren comprobación cuando la comprobación bajo demanda está habilitada (dnssec=process)"
    }
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  "lastModified": "2026-06-17T03:07:21.543",
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