CVE-2020-3235

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the software processes specific SNMP object identifiers. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: To exploit this vulnerability by using SNMPv2c or earlier, the attacker must know the SNMP read-only community string for an affected system. To exploit this vulnerability by using SNMPv3, the attacker must know the user credentials for the affected system.

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software and Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the software processes specific SNMP object identifiers. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: To exploit this vulnerability by using SNMPv2c or earlier, the attacker must know the SNMP read-only community string for an affected system. To exploit this vulnerability by using SNMPv3, the attacker must know the user credentials for the affected system.

Una vulnerabilidad en el subsistema Simple Network Management Protocol (SNMP) de Cisco IOS Software y Cisco IOS XE Software en Catalyst 4500 Series Switches, podría permitir a un atacante remoto autenticado causar una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación de entrada insuficiente cuando el software procesa identificadores de objetos SNMP específicos. Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete SNMP diseñado a un dispositivo afectado. Una explotación con éxito podría permitir al atacante causar que el dispositivo afectado se vuela a cargar, resultando en una condición DoS. Nota: Para explotar esta vulnerabilidad usando SNMPv2c o anterior, el atacante debe conocer la cadena de comunidad de solo lectura SNMP para un sistema afectado. Para explotar esta vulnerabilidad usando SNMPv3, el atacante debe conocer las credenciales de usuario para el sistema afectado.