CVE-2018-13990 Auth bypass in n/a

High 8.6 Published 6 May 2019 Updated 5 Aug 2024

Attackers can brute-force WebUI credentials due to missing rate limiting, potentially gaining unauthorized administrative access to PHOENIX CONTACT switches.

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-2018-13990?

CVE-2018-13990 is a high-severity authentication bypass vulnerability in n/a, published on 6 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 prior to 1.35 is vulnerable to brute-force attacks, because of Improper Restriction of Excessive Authentication Attempts.

Weakness: CWE-287

Which versions are affected by CVE-2018-13990?

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-2018-13990?

No fix has been published for CVE-2018-13990 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2018-13990 being exploited?

There is no known exploitation of CVE-2018-13990 in the wild and no public exploit code.

Sources

Also known as GHSA-8769-f7h2-qvf4.