CVE-2021-34713 – Cisco IOS XR Software for ASR 9000 Series Routers Denial of Service Vulnerability

https://notcve.org/view.php?id=CVE-2021-34713

A vulnerability in the Layer 2 punt code of Cisco IOS XR Software running on Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to cause the affected line card to reboot. This vulnerability is due to incorrect handling of specific Ethernet frames that cause a spin loop that can make the network processors unresponsive. An attacker could exploit this vulnerability by sending specific types of Ethernet frames on the segment where the affected line cards are attached. A successful exploit could allow the attacker to cause the affected line card to reboot. Una vulnerabilidad en el código de bateo de Capa 2 de Cisco IOS XR Software que se ejecuta en los routers de Servicios de Agregación de la serie Cisco ASR 9000 podría permitir a un atacante adyacente no autenticado causar el reinicio de la tarjeta de línea afectada. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-npspin-QYpwdhFD • CWE-399: Resource Management Errors •