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).
Weakness
Nonces should be used for the present occasion and only once.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Metasys_system | Johnsoncontrols | * | 9.0 (excluding) |
Potential Mitigations
References
- https://www.johnsoncontrols.com/-/media/jci/cyber-solutions/product-security-advisories/2019/jci-psa-2019-06-v1-metasys-icsa-19-227-01.pdf
- https://www.us-cert.gov/ics/advisories/icsa-19-227-01
- https://www.johnsoncontrols.com/-/media/jci/cyber-solutions/product-security-advisories/2019/jci-psa-2019-06-v1-metasys-icsa-19-227-01.pdf
- https://www.us-cert.gov/ics/advisories/icsa-19-227-01