CVE-2019-1691

A vulnerability in the detection engine of Cisco Firepower Threat Defense Software could allow an unauthenticated, remote attacker to cause the unexpected restart of the SNORT detection engine, resulting in a denial of service (DoS) condition. The vulnerability is due to the incomplete error handling of the SSL or TLS packet header during the connection establishment. An attacker could exploit this vulnerability by sending a crafted SSL or TLS packet during the connection handshake. An exploit could allow the attacker to cause the SNORT detection engine to unexpectedly restart, resulting in a partial DoS condition while the detection engine restarts. Versions prior to 6.2.3.4 are affected.

A vulnerability in the detection engine of Cisco Firepower Threat Defense Software could allow an unauthenticated, remote attacker to cause the unexpected restart of the SNORT detection engine, resulting in a denial of service (DoS) condition. The vulnerability is due to the incomplete error handling of the SSL or TLS packet header during the connection establishment. An attacker could exploit this vulnerability by sending a crafted SSL or TLS packet during the connection handshake. An exploit could allow the attacker to cause the SNORT detection engine to unexpectedly restart, resulting in a partial DoS condition while the detection engine restarts. Versions prior to 6.2.3.4 are affected.

Una vulnerabilidad en el motor de detección del software Firepower Threat Defense de Cisco podría permitir a un atacante remoto no autenticado provocar el reinicio inesperado del motor de detección SNORT, conduciendo a una Denegación de Servicio (DoS). Esta vulnerabilidad se debe a la gestión de errores incompleta de la cabecera del paquete SSL o TLS durante el establecimiento de una conexión. Un atacante podría explotar esta vulnerabilidad enviando un paquete SSL o TLS manipulado durante el handshake de conexión. Si se explota con éxito, podría permitir que el atacante consiga que el motor de detección SNORT se reinicie inesperadamente, conduciendo a una condición DoS parcial durante el reinicio del motor de detección. Las versiones anteriores a la 6.2.3.4 se ven afectadas.