CVE-2020-3351

High

Description

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.

SeverityHigh
CVSS8.6
Exploit probability—
ProductCisco Sd-wan Firmware
PublishedJul 16, 2020
First seenJul 16, 2020
Weakness typeCWE-399CWE-399

How to fix

Update
  • cisco sd-wan_firmware17.2.7, 18.3.0 or later

Affected products

ProductAffected versionsFixed in
cisco sd-wan_firmwarev < 17.2.7, 17.2.8 ≤ v < 18.3.017.2.7, 18.3.0
cisco vedge_cloud_routerNo range specified—
cisco vsmart_controllerNo range specified—

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