CVE-2019-1858

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the SNMP application to leak system memory, which could cause an affected device to restart unexpectedly. The vulnerability is due to improper error handling when processing inbound SNMP packets. An attacker could exploit this vulnerability by sending multiple crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the SNMP application to leak system memory because of an improperly handled error condition during packet processing. Over time, this memory leak could cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the SNMP application to leak system memory, which could cause an affected device to restart unexpectedly. The vulnerability is due to improper error handling when processing inbound SNMP packets. An attacker could exploit this vulnerability by sending multiple crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the SNMP application to leak system memory because of an improperly handled error condition during packet processing. Over time, this memory leak could cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

Una vulnerabilidad en el procesador de paquetes de entrada del Protocolo de administración de red simple (SNMP) de los programas FXOS y NX-OS de Cisco podría permitir que un atacante remoto no autenticado provoque que la aplicación SNMP pierda memoria en el sistema, lo que podría hacer que un dispositivo afectado se reinicie inesperadamente . La vulnerabilidad se debe a un manejo incorrecto de errores al procesar paquetes SNMP entrantes. Un atacante podría aprovechar esta vulnerabilidad enviando múltiples paquetes SNMP diseñados a un dispositivo afectado. Un aprovechamiento exitoso podría permitir que el atacante haga que la aplicación SNMP pierda memoria del sistema debido a una condición de error manejada incorrectamente durante el procesamiento del paquete. Con el tiempo, esta pérdida de memoria podría hacer que la aplicación SNMP se reinicie varias veces, lo que lleva a un reinicio a nivel del sistema y una condición de denegación de servicio (DoS).