CVE-2019-13115

Estado: ModificadaAlta (8.1)—

In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 12%
Percentil entre todas las CVEs puntuadas: 96
Fecha de la puntuación: 6/10/2026

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 (7)

Debian — Debian Linux F5 — Traffix Systems Signaling Delivery Controller Fedoraproject — Fedora Libssh2 — Libssh2 Netapp — Cloud Backup Netapp — E-series Santricity OS Controller Netapp — Ontap Select Deploy Administration Utility

CWE

CWE-125, CWE-190

Referencias

JSON original (NVD)

Mostrar

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    {
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      "value": "En libssh2 anterior a la versión 1.9.0, el archivo kex_method_diffie_hellman_group_exchange_sha256_key_exchange en kex.c presenta un desbordamiento de enteros que podría conllevar a una escritura fuera de límites en la manera en que se leen los paquetes desde el servidor. Un atacante remoto que comprometa un servidor SSH puede ejecutar código en el sistema cliente cuando un usuario se conecta al servidor. Esto esta relacionado con un error de _libssh2_check_length y es diferente de los diversos problemas corregidos en la versión 1.8.1, tal y como el CVE-2019-3855."
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  "lastModified": "2026-06-17T02:16:05.543",
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