CVSS: 7.7EPSS: 0%CPEs: 2EXPL: 0CVE-2021-1623 – Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers Simple Network Management Protocol Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2021-1623
A vulnerability in the Simple Network Management Protocol (SNMP) punt handling function of Cisco cBR-8 Converged Broadband Routers could allow an authenticated, remote attacker to overload a device punt path, resulting in a denial of service (DoS) condition. This vulnerability is due to the punt path being overwhelmed by large quantities of SNMP requests. An attacker could exploit this vulnerability by sending a large number of SNMP requests to an affected device. A successful exploit could allow the attacker to overload the device punt path, resulting in a DoS condition. Una vulnerabilidad en la función punt handling de Simple Network Management Protocol (SNMP) de Cisco cBR-8 Converged Broadband Routers podría permitir a un atacante remoto autenticado sobrecargar la ruta de punt del dispositivo, resultando en una condición de denegación de servicio (DoS). • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cbr8snmp-zGjkZ9Fc • CWE-399: Resource Management Errors •
CVSS: 8.6EPSS: 0%CPEs: 14EXPL: 0CVE-2021-1622 – Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers Common Open Policy Service Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2021-1622
A vulnerability in the Common Open Policy Service (COPS) of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause resource exhaustion, resulting in a denial of service (DoS) condition. This vulnerability is due to a deadlock condition in the code when processing COPS packets under certain conditions. An attacker could exploit this vulnerability by sending COPS packets with high burst rates to an affected device. A successful exploit could allow the attacker to cause the CPU to consume excessive resources, which prevents other control plane processes from obtaining resources and results in a DoS. Una vulnerabilidad en el Servicio de Política Abierta Común (COPS) de Cisco IOS XE Software para Cisco cBR-8 Converged Broadband Routers podría permitir a un atacante remoto no autenticado causar el agotamiento de los recursos, resultando en una condición de denegación de servicio (DoS). • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cbr8-cops-Vc2ZsJSx • CWE-667: Improper Locking CWE-833: Deadlock •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-34771 – Cisco IOS XR Software Unauthorized Information Disclosure Vulnerability
https://notcve.org/view.php?id=CVE-2021-34771
A vulnerability in the Cisco IOS XR Software CLI could allow an authenticated, local attacker to view more information than their privileges allow. This vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this vulnerability by running a specific command. A successful exploit could allow the attacker to view sensitive configuration information that their privileges might not otherwise allow them to access. Una vulnerabilidad en la CLI de Cisco IOS XR Software podría permitir a un atacante local autenticado visualizar más información de la que permiten sus privilegios. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-infodisc-CjLdGMc5 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-201: Insertion of Sensitive Information Into Sent Data •
CVSS: 7.5EPSS: 0%CPEs: 48EXPL: 0CVE-2021-34737 – Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2021-34737
A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service (DoS) condition. This vulnerability exists because certain DHCPv4 messages are improperly validated when they are processed by an affected device. An attacker could exploit this vulnerability by sending a malformed DHCPv4 message to an affected device. A successful exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the dhcpd process. While the dhcpd process is restarting, which may take up to approximately two minutes, DHCPv4 server services are unavailable on the affected device. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dhcp-dos-pjPVReLU • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 63EXPL: 0CVE-2021-34728 – Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities
https://notcve.org/view.php?id=CVE-2021-34728
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker with a low-privileged account to elevate privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Múltiples vulnerabilidades en la CLI de Cisco IOS XR Software podrían permitir a un atacante local autenticado con una cuenta de bajo privilegio elevar los privilegios en un dispositivo afectado. Para conseguir más información sobre estas vulnerabilidades, consulte la sección Details de este aviso • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-privescal-dZYMrKf • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •