Denial of service in Johnson Controls Metasys and Facility Explorer

1) Resource exhaustion

EUVDB-ID: #VU83988

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4486

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Metasys Network Automation Engine (NAE55): before 12.0.4

Metasys SNE engines: before 12.0.4

Metasys SNC engines: before 12.0.4

Facility Explorer F4-SNC: before 12.0.4

CPE2.3

External links

http://www.johnsoncontrols.com/cyber-solutions/security-advisories
http://www.cisa.gov/news-events/ics-advisories/icsa-23-341-03

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.