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CVE-2026-0967

Estado: ModificadaMedia (5.5)—

A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.

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)

CWE

Referencias

JSON original (NVD)

Mostrar
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      "url": "https://access.redhat.com/errata/RHSA-2026:18160",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:18683",
      "source": "secalert@redhat.com"
    },
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      "tags": [
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  "weaknesses": [
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    },
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      "value": "Se encontró una vulnerabilidad en libssh. Un atacante remoto, al controlar los archivos de configuración del cliente o los archivos known_hosts, podría crear nombres de host específicos que, al ser procesados por la función `match_pattern()`, pueden llevar a un retroceso ineficiente de expresiones regulares. Esto puede causar tiempos de espera y agotamiento de recursos, lo que resulta en una denegación de servicio (DoS) para el cliente."
    }
  ],
  "lastModified": "2026-09-01T13:18:06.947",
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