CVE-2019-1644 Cisco IoT Field Network Director Resource Exhaustion Denial of Service Vulnerability

High 7.5 Published 23 Jan 2019 Updated 19 Nov 2024

Unauthenticated remote attackers can cause denial of service by exhausting system resources via high-rate UDP packets in Cisco IoT Field Network Director.

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-2019-1644?

CVE-2019-1644 is a high-severity denial of service vulnerability in Cisco IoT Field Network Director (IoT-FND), published on 23 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the UDP protocol implementation for Cisco IoT Field Network Director (IoT-FND) could allow an unauthenticated, remote attacker to exhaust system resources, resulting in a denial of service (DoS) condition. The vulnerability is due to improper resource management for UDP ingress packets. An attacker could exploit this vulnerability by sending a high rate of UDP packets to an affected system within a short period of time. A successful exploit could allow the attacker to exhaust available system resources, resulting in a DoS condition.

Weakness: CWE-770, CWE-400

Which versions are affected by CVE-2019-1644?

It affects 1 product.

Products include Cisco Iot Field Network Director.

How do I fix CVE-2019-1644?

No fix has been published for CVE-2019-1644 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-2019-1644 being exploited?

There is no known exploitation of CVE-2019-1644 in the wild and no public exploit code.

Sources

Also known as GHSA-4644-gg9v-fr7w.