CVE-2018-0473 Cisco IOS Software Precision Time Protocol Denial of Service Vulnerability

High 8.6 Published 5 Oct 2018 Updated 26 Nov 2024

An unauthenticated remote attacker can cause a denial of service in the Precision Time Protocol subsystem by sending crafted packets, disrupting network time synchronization.

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-2018-0473?

CVE-2018-0473 is a high-severity denial of service vulnerability in Cisco Ios, published on 5 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Precision Time Protocol (PTP) subsystem of Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of the Precision Time Protocol. The vulnerability is due to insufficient processing of PTP packets. An attacker could exploit this vulnerability by sending a custom PTP packet to, or through, an affected device. A successful exploit could allow the attacker to cause a DoS condition for the PTP subsystem, resulting in time synchronization issues across the network.

Weakness: CWE-399

Which versions are affected by CVE-2018-0473?

It affects 1 product.

Products include Cisco Ios.

How do I fix CVE-2018-0473?

No fix has been published for CVE-2018-0473 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-2018-0473 being exploited?

There is no known exploitation of CVE-2018-0473 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-qpmh-4wc8-x2vf.