CVE-2020-3162 Cisco IoT Field Network Director Denial of Service Vulnerability

High 7.5 Published 15 Apr 2020 Updated 15 Nov 2024

Unauthenticated remote attackers can cause a denial of service on Cisco IoT Field Network Director by sending malformed CoAP packets, disrupting IoT endpoint communication.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3162?

CVE-2020-3162 is a high-severity denial of service vulnerability in Cisco IoT Field Network Director (IoT-FND), published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Constrained Application Protocol (CoAP) implementation of Cisco IoT Field Network Director could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of incoming CoAP traffic. An attacker could exploit this vulnerability by sending a malformed CoAP packet to an affected device. A successful exploit could allow the attacker to force the CoAP server to stop, interrupting communication to the IoT endpoints.

Weakness: CWE-20

Which versions are affected by CVE-2020-3162?

It affects 1 product.

Products include Cisco Iot Field Network Director.

How do I fix CVE-2020-3162?

No fix has been published for CVE-2020-3162 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-3162 being exploited?

There is no known exploitation of CVE-2020-3162 in the wild and no public exploit code.

Sources

Also known as GHSA-qwp9-wc7v-7pg4.