CVE-2019-7594

Metasys use of hardcoded RC2 key

Description

Metasys® ADS/ADX servers and NAE/NIE/NCE engines prior to 9.0 make use of a hardcoded RC2 key for certain encryption operations involving the Site Management Portal (SMP).

Remediation

Solution:

  • Upgrade Metasys® devices to Release 9.0 or later and configure sites with trusted certificates.

Categories

6.8
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.11%
Vendor Advisory johnsoncontrols.com
Affected: Johnson Controls Metasys versions prior to 9.0
Published at:
Updated at:

References

Link Tags
https://www.johnsoncontrols.com/-/media/jci/cyber-solutions/product-security-advisories/2019/jci-psa-2019-06-v1-metasys-icsa-19-227-01.pdf vendor advisory
https://www.us-cert.gov/ics/advisories/icsa-19-227-01 mitigation third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2019-7594?
CVE-2019-7594 has been scored as a medium severity vulnerability.
How to fix CVE-2019-7594?
To fix CVE-2019-7594: Upgrade Metasys® devices to Release 9.0 or later and configure sites with trusted certificates.
Is CVE-2019-7594 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-7594 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-7594?
CVE-2019-7594 affects Johnson Controls Metasys versions prior to 9.0.
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