title: Metasys use of shared RSA key pairs
description: Metasys® ADS/ADX servers and NAE/NIE/NCE engines prior to 9.0 make use of a shared RSA key pair for certain encryption operations involving the Site Management Portal (SMP).
problem types: CWE-323: Reusing a Nonce, Key Pair in Encryption
affected:
{
product: Metasys versions prior to 9.0
vendor: Johnson Controls
versions:
status: unaffected, version: 9.0
}
metrics:
cvssV3_0: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.8
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
version: 3.0
]
solutions: Upgrade Metasys® devices to Release 9.0 or later and configure sites with trusted certificates.