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CVE-2023-4408

Estado: ModificadaAlta (7.5)—

The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.

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)

Fedoraproject — FedoraISC — BindNetapp — Ontap

CWE

Referencias

JSON original (NVD)

Mostrar
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              "exploitation": "none"
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      "value": "The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers.\nThis issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1."
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      "value": "El código de análisis de mensajes DNS en \"named\" incluye una sección cuya complejidad computacional es demasiado alta. No causa problemas para el tráfico DNS típico, pero las consultas y respuestas manipuladas pueden causar una carga excesiva de la CPU en la instancia \"nombrada\" afectada al explotar esta falla. Este problema afecta tanto a los servidores autorizados como a los solucionadores recursivos. Este problema afecta a las versiones de BIND 9, 9.0.0 a 9.16.45, 9.18.0 a 9.18.21, 9.19.0 a 9.19.19, 9.9.3-S1 a 9.11.37-S1, 9.16.8-S1 a 9.16. 45-S1 y 9.18.11-S1 a 9.18.21-S1."
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  "lastModified": "2026-06-17T06:37:45.997",
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