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CVE-2019-17455

Estado: ModificadaCrítica (9.8)—

Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read in buildSmbNtlmAuthRequest in smbutil.c for a crafted NTLM request.

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 (6)

Canonical — Ubuntu LinuxDebian — Debian LinuxFedoraproject — FedoraNongnu — LibntlmOpensuse — Backports SLEOpensuse — Leap

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2019-17455",
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      "value": "Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read in buildSmbNtlmAuthRequest in smbutil.c for a crafted NTLM request."
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      "value": "Libntlm versiones hasta 1.5, se basa en un tamaño de búfer fijo para operaciones de lectura y escritura de las funciones tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge y tSmbNtlmAuthResponse, como es demostrado por una lectura excesiva de búfer en la región heap de la memoria en la función buildSmbNtlmAuthRequest en el archivo smbutil.c para una petición NTLM especialmente diseñada."
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  "lastModified": "2026-06-17T02:23:59.040",
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