CVE-2019-1750 Cisco IOS XE Software Catalyst 4500 Cisco Discovery Protocol Denial of Service Vulnerability

High 7.4 Published 27 Mar 2019 Updated 21 Nov 2024

An unauthenticated adjacent attacker can cause a denial of service on Cisco Catalyst 4500 switches by sending crafted CDP packets.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-1750?

CVE-2019-1750 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 27 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the Easy Virtual Switching System (VSS) of Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an unauthenticated, adjacent attacker to cause the switches to reload. The vulnerability is due to incomplete error handling when processing Cisco Discovery Protocol (CDP) packets used with the Easy Virtual Switching System. An attacker could exploit this vulnerability by sending a specially crafted CDP packet. An exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Weakness: CWE-388, CWE-20

Which versions are affected by CVE-2019-1750?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2019-1750?

No fix has been published for CVE-2019-1750 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-2019-1750 being exploited?

There is no known exploitation of CVE-2019-1750 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-9rp5-fg3q-frgm.