CVE-2018-13994 Denial of service in n/a

High 7.5 Published 7 May 2019 Updated 5 Aug 2024

An attacker can cause a denial of service on PHOENIX CONTACT industrial switches by exhausting connection resources in the WebUI.

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-2018-13994?

CVE-2018-13994 is a high-severity denial of service vulnerability in n/a, published on 7 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The WebUI of PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, 48xx versions 1.0 to 1.34 is vulnerable to a denial-of-service attack by making more than 120 connections.

Weakness: CWE-400

Which versions are affected by CVE-2018-13994?

It affects 29 products.

Products include Phoenixcontact Fl Switch 3004t-Fx Firmware, Phoenixcontact Fl Switch 3004t-Fx St Firmware, Phoenixcontact Fl Switch 3005 Firmware, Phoenixcontact Fl Switch 3005t Firmware, Phoenixcontact Fl Switch 3006t-2fx Firmware, Phoenixcontact Fl Switch 3006t-2fx Sm Firmware and 23 more.

How do I fix CVE-2018-13994?

No fix has been published for CVE-2018-13994 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-2018-13994 being exploited?

There is no known exploitation of CVE-2018-13994 in the wild and no public exploit code.

Sources

Also known as GHSA-9xc9-7qcm-99r9.