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CVE-2019-16905

Estado: ModificadaAlta (7.8)—

OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.

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 (5)

Netapp — Cloud BackupNetapp — Steelstore Cloud Integrated StorageOpenbsd — OpensshSiemens — Scalance X204rna ECC FirmwareSiemens — Scalance X204rna Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2019-16905",
  "cveTags": [],
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          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
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  "published": "2019-10-09T20:15:23.503",
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      "description": [
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          "lang": "en",
          "value": "CWE-190"
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      "value": "OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH."
    },
    {
      "lang": "es",
      "value": "OpenSSH 7.7 a 7.9 y 8.x anterior de la versión  8.1, cuando se compila con un tipo de clave experimental, tiene un desbordamiento de entero de identificación  previa si un cliente o servidor está configurado para usar una clave XMSS especialmente diseñada. Esto conduce a la corrupción de la memoria y la ejecución del código local debido a un error en el algoritmo de análisis de claves XMSS. NOTA: la implementación de XMSS se considera experimental en todas las versiones de OpenSSH lanzadas, y no hay una forma compatible para habilitarla al crear OpenSSH portátil."
    }
  ],
  "lastModified": "2026-06-17T02:22:56.250",
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