CVSS: 7.5EPSS: 0%CPEs: 114EXPL: 0CVE-2019-1891 – Cisco Small Business Series Switches HTTP Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2019-1891
A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition. Una vulnerabilidad en la interfaz web de los Switches Administrados de las series 200, 300 y 500 de Cisco Small Business, podría permitir a un atacante remoto no identificado causar una condición de denegación de servicio (DoS) en un dispositivo afectado. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-sbss-dos • CWE-20: Improper Input Validation •
CVSS: 7.5EPSS: 0%CPEs: 114EXPL: 0CVE-2019-1892 – Cisco Small Business Series Switches Memory Corruption Vulnerability
https://notcve.org/view.php?id=CVE-2019-1892
A vulnerability in the Secure Sockets Layer (SSL) input packet processor of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a memory corruption on an affected device. The vulnerability is due to improper validation of HTTPS packets. An attacker could exploit this vulnerability by sending a malformed HTTPS packet to the management web interface of the affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a denial of service (DoS) condition. Una vulnerabilidad en el procesador de paquetes de entrada de Secure Sockets Layer (SSL) de los Switches Administrados de las series 200, 300 y 500 de Cisco Small Business, podría permitir a un atacante remoto no autenticado causar una corrupción de memoria de un dispositivo afectado. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-sbss-memcorrupt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 8.6EPSS: 0%CPEs: 54EXPL: 0CVE-2019-1814 – Cisco Small Business 300 Series Managed Switches DHCP Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2019-1814
A vulnerability in the interactions between the DHCP and TFTP features for Cisco Small Business 300 Series (Sx300) Managed Switches could allow an unauthenticated, remote attacker to cause the device to become low on system memory, which in turn could lead to an unexpected reload of the device and result in a denial of service (DoS) condition on an affected device. The vulnerability is due to a failure to free system memory when an unexpected DHCP request is received. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the targeted device. A successful exploit could allow the attacker to cause an unexpected reload of the device. Una vulnerabilidad en las interacciones entre las funciones DHCP y TFTP para Cisco Small Business 300 Series (Sx300) Managed Switches, podría permitir que un atacante remoto no autenticado cause que el dispositivo tenga una disminución sobre la memoria del sistema, que a su vez podría generar una recarga inesperada de el dispositivo resultando en una condición de denegación de servicio (DoS) en el dispositivo afectado. • http://www.securityfocus.com/bid/108344 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb300sms-dhcp • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.7EPSS: 0%CPEs: 210EXPL: 0CVE-2019-1806 – Cisco Small Business Series Switches Simple Network Management Protocol Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2019-1806
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco Small Business Sx200, Sx300, Sx500, ESW2 Series Managed Switches and Small Business Sx250, Sx350, Sx550 Series Switches could allow an authenticated, remote attacker to cause the SNMP application of an affected device to cease processing traffic, resulting in the CPU utilization reaching one hundred percent. Manual intervention may be required before a device resumes normal operations. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a malicious SNMP packet to an affected device. A successful exploit could allow the attacker to cause the device to cease forwarding traffic, which could result in a denial of service (DoS) condition. • http://www.securityfocus.com/bid/108335 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb-snmpdos • CWE-20: Improper Input Validation CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.2EPSS: 0%CPEs: 228EXPL: 0CVE-2019-1859 – Cisco Small Business Switches Secure Shell Certificate Authentication Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2019-1859
A vulnerability in the Secure Shell (SSH) authentication process of Cisco Small Business Switches software could allow an attacker to bypass client-side certificate authentication and revert to password authentication. The vulnerability exists because OpenSSH mishandles the authentication process. An attacker could exploit this vulnerability by attempting to connect to the device via SSH. A successful exploit could allow the attacker to access the configuration as an administrative user if the default credentials are not changed. There are no workarounds available; however, if client-side certificate authentication is enabled, disable it and use strong password authentication. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-scbv • CWE-285: Improper Authorization CWE-295: Improper Certificate Validation •