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CVE-2018-20679

Estado: ModificadaAlta (7.5)—

Se ha descubierto un problema en versiones anteriores a la 1.30.0 de BusyBox. Una lectura fuera de límites en los componentes udhcp (consumidos por el servidor, cliente y relays DHCP) permite que un atacante remoto filtre información sensible de la pila mediante el envío de un mensaje DHCP manipulado. Esto está relacionado con la verificación en udhcp_get_option() en networking/udhcp/common.c de que las opciones 4-byte tienen, efectivamente, 4 bytes.

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)

Busybox — BusyboxCanonical — Ubuntu Linux

CWE

Referencias

JSON original (NVD)

Mostrar
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    },
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      "value": "Se ha descubierto un problema en versiones anteriores a la 1.30.0 de BusyBox. Una lectura fuera de límites en los componentes udhcp (consumidos por el servidor, cliente y relays DHCP) permite que un atacante remoto filtre información sensible de la pila mediante el envío de un mensaje DHCP manipulado. Esto está relacionado con la verificación en udhcp_get_option() en networking/udhcp/common.c de que las opciones 4-byte tienen, efectivamente, 4 bytes."
    }
  ],
  "lastModified": "2026-06-17T01:53:18.477",
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