CVE-2021-36200 Metasys ADS/ADX/OAS with MUI

Medium 5.3 Published 22 Jul 2022 Updated 16 Sep 2024

Unauthenticated attackers can access the web API to enumerate users in Metasys ADS/ADX/OAS servers, requiring an upgrade to secure the system.

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-2021-36200?

CVE-2021-36200 is a medium-severity missing authorization vulnerability in Johnson Controls Metasys ADS/ADX/OAS server, published on 22 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Under certain circumstances an unauthenticated user could access the the web API for Metasys ADS/ADX/OAS 10 versions prior to 10.1.6 and 11 versions prior to 11.0.2 and enumerate users.

Weakness: CWE-306

Which versions are affected by CVE-2021-36200?

It affects 3 products.

Products include Johnsoncontrols Metasys Application and Data Server, Johnsoncontrols Metasys Extended Application and Data Server, Johnsoncontrols Metasys Open Application Server.

How do I fix CVE-2021-36200?

No fix has been published for CVE-2021-36200 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-36200 being exploited?

There is no known exploitation of CVE-2021-36200 in the wild and no public exploit code.

Sources

Also known as GHSA-93j9-wf3j-vjhh.