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: 8.6EPSS: 0%CPEs: 13EXPL: 0CVE-2020-26070 – Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers Slow Path Forwarding Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2020-26070
A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource allocation when an affected device processes network traffic in software switching mode (punted). An attacker could exploit this vulnerability by sending specific streams of Layer 2 or Layer 3 protocol data units (PDUs) to an affected device. A successful exploit could cause the affected device to run out of buffer resources, which could make the device unable to process or forward traffic, resulting in a DoS condition. The device would need to be restarted to regain functionality. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cp-dos-ej8VB9QY • CWE-404: Improper Resource Shutdown or Release •
CVSS: 8.6EPSS: 0%CPEs: 55EXPL: 0CVE-2019-16019 – Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities
https://notcve.org/view.php?id=CVE-2019-16019
Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-evpn • CWE-399: Resource Management Errors •
CVSS: 8.6EPSS: 0%CPEs: 55EXPL: 0CVE-2019-16021 – Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities
https://notcve.org/view.php?id=CVE-2019-16021
Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-evpn • CWE-399: Resource Management Errors •