CVSS: 8.5EPSS: 0%CPEs: 51EXPL: 0CVE-2021-34718 – Cisco IOS XR Software Arbitrary File Read and Write Vulnerability
https://notcve.org/view.php?id=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. 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. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-scp-inject-QwZOCv2 • CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') •
CVSS: 7.4EPSS: 0%CPEs: 17EXPL: 0CVE-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 •
CVSS: 6.9EPSS: 0%CPEs: 25EXPL: 0CVE-2021-34709 – Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Image Verification Vulnerabilities
https://notcve.org/view.php?id=CVE-2021-34709
Multiple vulnerabilities in image verification checks of Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for Cisco 8000 Series Routers could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system. For more information about these vulnerabilities, see the Details section of this advisory. Múltiples vulnerabilidades en las comprobaciones de verificación de imágenes de los routers Cisco Network Convergence System (NCS) de la serie 540, sólo cuando se ejecutan imágenes de software Cisco IOS XR NCS540L, y el software Cisco IOS XR para los routers Cisco de la serie 8000 podrían permitir a un atacante local autenticado ejecutar código arbitrario en el sistema operativo subyacente. Para conseguir más información sobre estas vulnerabilidades, consulte la sección Details de este aviso • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lnt-QN9mCzwn • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 7.2EPSS: 0%CPEs: 25EXPL: 0CVE-2021-34708 – Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Image Verification Vulnerabilities
https://notcve.org/view.php?id=CVE-2021-34708
Multiple vulnerabilities in image verification checks of Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for Cisco 8000 Series Routers could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system. For more information about these vulnerabilities, see the Details section of this advisory. Varias vulnerabilidades en las comprobaciones de verificación de imágenes de los routers Cisco Network Convergence System (NCS) de la serie 540, sólo cuando se ejecutan imágenes de software Cisco IOS XR NCS540L, y el software Cisco IOS XR para los routers Cisco de la serie 8000 podrían permitir a un atacante local autenticado ejecutar código arbitrario en el sistema operativo subyacente. Para conseguir más información sobre estas vulnerabilidades, consulte la sección Details de este aviso • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lnt-QN9mCzwn • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2021-1485 – Cisco IOS XR Software Command Injection Vulnerability
https://notcve.org/view.php?id=CVE-2021-1485
A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges on the underlying Linux operating system (OS) of an affected device. This vulnerability is due to insufficient input validation of commands that are supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to an affected command. A successful exploit could allow the attacker to execute commands on the underlying Linux OS with root privileges. Una vulnerabilidad en la CLI del software Cisco IOS XR, podría permitir a un atacante local autenticado inyectar comandos arbitrarios que son ejecutados con privilegios root en el sistema operativo (SO) subyacente de Linux de un dispositivo afectado. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cmdinj-vsKGherc • CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') •