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Rewterz Threat Advisory – ICS: Johnson Controls Metasys Multiple Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2019-7593

Metasys ADS/ADX servers and NAE/NIE/NCE engines make use of a shared RSA key pair for certain encryption operations involving the Site Management Portal (SMP). An attacker with access to the shared RSA key pair could decrypt captured network traffic between the Metasys ADS/ADX servers or NAE/NIE/NCE engines and the connecting SMP user client.

CVE-2019-7594

Metasys ADS/ADX servers and NAE/NIE/NCE engines make use of a hardcoded RC2 key for certain encryption operations involving the Site Management Portal (SMP). An attacker with access to the hardcoded RC2 key could decrypt captured network traffic between the Metasys ADS/ADX servers or NAE/NIE/NCE engines and the connecting SMP user client.

Impact

Decrypt captured network traffic.

Affected Vendors

Johnson Controls

Affected Products

Metasys system versions prior to 9.0

Remediation

Johnson Controls recommends the users to upgrade to Version 9.0 or later and configure sites with trusted certificates.