CVSS: 7.2EPSS: 0%CPEs: 56EXPL: 0CVE-2020-3396 – Cisco IOS XE Software IOx Guest Shell USB SSD Namespace Protection Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2020-3396
A vulnerability in the file system on the pluggable USB 3.0 Solid State Drive (SSD) for Cisco IOS XE Software could allow an authenticated, physical attacker to remove the USB 3.0 SSD and modify sensitive areas of the file system, including the namespace container protections. The vulnerability occurs because the USB 3.0 SSD control data is not stored on the internal boot flash. An attacker could exploit this vulnerability by removing the USB 3.0 SSD, modifying or deleting files on the USB 3.0 SSD by using another device, and then reinserting the USB 3.0 SSD on the original device. A successful exploit could allow the attacker to remove container protections and perform file actions outside the namespace of the container with root privileges. Una vulnerabilidad en el sistema de archivos en la USB 3.0 Solid State Drive (SSD) conectable para el Cisco IOS XE Software, podría permitir a un atacante físico autenticado eliminar el SSD USB 3.0 y modificar áreas sensibles del sistema de archivos, incluyendo las protecciones del contenedor de espacio de nombres. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-usb-guestshell-WmevScDj • CWE-269: Improper Privilege Management CWE-284: Improper Access Control •
CVSS: 7.8EPSS: 0%CPEs: 128EXPL: 0CVE-2020-3404 – Cisco IOS XE Software Consent Token Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2020-3404
A vulnerability in the persistent Telnet/Secure Shell (SSH) CLI of Cisco IOS XE Software could allow an authenticated, local attacker to gain shell access on an affected device and execute commands on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient enforcement of the consent token in authorizing shell access. An attacker could exploit this vulnerability by authenticating to the persistent Telnet/SSH CLI on an affected device and requesting shell access. A successful exploit could allow the attacker to gain shell access on the affected device and execute commands on the underlying OS with root privileges. Una vulnerabilidad en la CLI Telnet/Secure Shell (SSH) persistente de Cisco IOS XE Software, podría permitir a un atacante local autenticado obtener acceso de shell en un dispositivo afectado y ejecutar comandos en el sistema operativo (SO) subyacente con privilegios root. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ctbypass-7QHAfHkK • CWE-863: Incorrect Authorization •
CVSS: 8.6EPSS: 0%CPEs: 128EXPL: 0CVE-2020-3407 – Cisco IOS XE Software RESTCONF and NETCONF-YANG Access Control List Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2020-3407
A vulnerability in the RESTCONF and NETCONF-YANG access control list (ACL) function of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of the ACL that is tied to the RESTCONF or NETCONF-YANG feature. An attacker could exploit this vulnerability by accessing the device using RESTCONF or NETCONF-YANG. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Una vulnerabilidad en la función de lista de control de acceso (ACL) de RESTCONF y NETCONF-YANG de Cisco IOS XE Software, podría permitir a un atacante remoto no autenticado causar que el dispositivo se recargue. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-confacl-HbPtfSuO • CWE-476: NULL Pointer Dereference •
CVSS: 8.6EPSS: 0%CPEs: 129EXPL: 0CVE-2020-3408 – Cisco IOS and IOS XE Software Split DNS Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2020-3408
A vulnerability in the Split DNS feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability occurs because the regular expression (regex) engine that is used with the Split DNS feature of affected releases may time out when it processes the DNS name list configuration. An attacker could exploit this vulnerability by trying to resolve an address or hostname that the affected device handles. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Una vulnerabilidad en la funcionalidad Split DNS de Cisco IOS Software y Cisco IOS XE Software, podría permitir a un atacante remoto no autenticado causar la recarga de un dispositivo afectado, resultando en una condición de denegación de servicio (DoS). • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-splitdns-SPWqpdGW • CWE-185: Incorrect Regular Expression CWE-400: Uncontrolled Resource Consumption •
CVSS: 8.6EPSS: 0%CPEs: 38EXPL: 0CVE-2020-3421 – Cisco IOS XE Software Zone-Based Firewall Denial of Service Vulnerabilities
https://notcve.org/view.php?id=CVE-2020-3421
Multiple vulnerabilities in the Zone-Based Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload or stop forwarding traffic through the firewall. The vulnerabilities are due to incomplete handling of Layer 4 packets through the device. An attacker could exploit these vulnerabilities by sending a certain sequence of traffic patterns through the device. A successful exploit could allow the attacker to cause the device to reload or stop forwarding traffic through the firewall, resulting in a denial of service. For more information about these vulnerabilities, see the Details section of this advisory. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-zbfw-94ckG4G • CWE-754: Improper Check for Unusual or Exceptional Conditions •