CVE-2021-34718

A vulnerability in the SSH Server process of Cisco IOS XR Software could allow an authenticated, remote attacker to overwrite and read arbitrary files on the local device. This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method. An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol (SCP) parameters when authenticating to a device. A successful exploit could allow the attacker to elevate their privileges and retrieve and upload files on a device that they should not have access to.

A vulnerability in the SSH Server process of Cisco IOS XR Software could allow an authenticated, remote attacker to overwrite and read arbitrary files on the local device. This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method. An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol (SCP) parameters when authenticating to a device. A successful exploit could allow the attacker to elevate their privileges and retrieve and upload files on a device that they should not have access to.

Una vulnerabilidad en el proceso del servidor SSH de Cisco IOS XR Software podría permitir a un atacante remoto autenticado sobrescribir y leer archivos arbitrario en el dispositivo local. Esta vulnerabilidad es debido a una insuficiente comprobación de entrada de los argumentos suministrados por el usuario para un método específico de transferencia de archivos. Un atacante con privilegios de nivel inferior podría explotar esta vulnerabilidad al especificar parámetros del Protocolo de Copia Segura (SCP) cuando se autentifica en un dispositivo. Una explotación con éxito podría permitir al atacante elevar sus privilegios y recuperar y cargar archivos en un dispositivo al que no debería tener acceso