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CVE-2020-3351

HIGHCVSS 8.6/10EPSS 1.37%

Last modified

CVE-2020-3351 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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. EPSS estimates a 1.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Probability
1.37%

68.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoSd-Wan Firmware< 17.2.7
CiscoSd-Wan Firmware>= 17.2.8, < 18.3.0
CiscoVedge Cloud RouterAll versions
CiscoVsmart ControllerAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3351?
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.
How severe is CVE-2020-3351?
CVE-2020-3351 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.37% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3351?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3351?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST