CVE-2020-3351

Cisco SD-WAN Solution Software Denial of Service Vulnerability

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in Cisco SD-WAN Solution Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper validation of fields in Cisco SD-WAN peering messages that are encapsulated in UDP packets. An attacker could exploit this vulnerability by sending crafted UDP messages to the targeted system. A successful exploit could allow the attacker to cause services on the device to fail, resulting in a DoS condition that could impact the targeted device and other devices that depend on it.

Una vulnerabilidad en Cisco SD-WAN Solution Software podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación inapropiada de los campos en los mensajes de interconexión SD-WAN de Cisco que están encapsulados en paquetes UDP. Un atacante podría explotar esta vulnerabilidad mediante el envío de mensajes UDP diseñados hacia el sistema objetivo. Una explotación con éxito podría permitir a un atacante causar un fallo en los servicios del dispositivo, resultando en una condición DoS que podría afectar el dispositivo objetivo y otros dispositivos que dependen de él

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-07-16 CVE Published
2023-04-01 EPSS Updated
2024-11-15 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-dos-KWOdyHnB	2020-07-23

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	< 17.2.7 Search vendor "Cisco" for product "Sd-wan Firmware" and version " < 17.2.7"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100 Search vendor "Cisco" for product "Vedge 100"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	< 17.2.7 Search vendor "Cisco" for product "Sd-wan Firmware" and version " < 17.2.7"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 1000 Search vendor "Cisco" for product "Vedge 1000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	< 17.2.7 Search vendor "Cisco" for product "Sd-wan Firmware" and version " < 17.2.7"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100b Search vendor "Cisco" for product "Vedge 100b"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	< 17.2.7 Search vendor "Cisco" for product "Sd-wan Firmware" and version " < 17.2.7"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100m Search vendor "Cisco" for product "Vedge 100m"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	< 17.2.7 Search vendor "Cisco" for product "Sd-wan Firmware" and version " < 17.2.7"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100wm Search vendor "Cisco" for product "Vedge 100wm"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	< 17.2.7 Search vendor "Cisco" for product "Sd-wan Firmware" and version " < 17.2.7"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 2000 Search vendor "Cisco" for product "Vedge 2000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	< 17.2.7 Search vendor "Cisco" for product "Sd-wan Firmware" and version " < 17.2.7"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 5000 Search vendor "Cisco" for product "Vedge 5000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	>= 17.2.8 < 18.3.0 Search vendor "Cisco" for product "Sd-wan Firmware" and version " >= 17.2.8 < 18.3.0"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100 Search vendor "Cisco" for product "Vedge 100"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	>= 17.2.8 < 18.3.0 Search vendor "Cisco" for product "Sd-wan Firmware" and version " >= 17.2.8 < 18.3.0"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 1000 Search vendor "Cisco" for product "Vedge 1000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	>= 17.2.8 < 18.3.0 Search vendor "Cisco" for product "Sd-wan Firmware" and version " >= 17.2.8 < 18.3.0"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100b Search vendor "Cisco" for product "Vedge 100b"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	>= 17.2.8 < 18.3.0 Search vendor "Cisco" for product "Sd-wan Firmware" and version " >= 17.2.8 < 18.3.0"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100m Search vendor "Cisco" for product "Vedge 100m"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	>= 17.2.8 < 18.3.0 Search vendor "Cisco" for product "Sd-wan Firmware" and version " >= 17.2.8 < 18.3.0"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 100wm Search vendor "Cisco" for product "Vedge 100wm"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	>= 17.2.8 < 18.3.0 Search vendor "Cisco" for product "Sd-wan Firmware" and version " >= 17.2.8 < 18.3.0"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 2000 Search vendor "Cisco" for product "Vedge 2000"	-	-	Safe
Cisco Search vendor "Cisco"	Sd-wan Firmware Search vendor "Cisco" for product "Sd-wan Firmware"	>= 17.2.8 < 18.3.0 Search vendor "Cisco" for product "Sd-wan Firmware" and version " >= 17.2.8 < 18.3.0"	-	Affected	in	Cisco Search vendor "Cisco"	Vedge 5000 Search vendor "Cisco" for product "Vedge 5000"	-	-	Safe
Cisco Search vendor "Cisco"		Vedge Cloud Router Search vendor "Cisco" for product "Vedge Cloud Router"				-		-		Affected
Cisco Search vendor "Cisco"		Vsmart Controller Search vendor "Cisco" for product "Vsmart Controller"				-		-		Affected