SB2019082103 - Multiple vulnerabilities in Johnson Controls Metasys
Published: August 21, 2019
Security Bulletin ID
SB2019082103
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Reusing a Nonce, Key Pair in Encryption (CVE-ID: CVE-2019-7593)
CWE-ID: CWE-323 - Reusing a Nonce, Key Pair in Encryption
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to decrypt captured network traffic.
The vulnerability exists due to the 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). A remote attacker with access to the shared RSA key pair can decrypt captured network traffic between the Metasys ADS/ADX servers or NAE/NIE/NCE engines and the connecting SMP user client.
2) Use of Hard-coded Cryptographic Key (CVE-ID: CVE-2019-7594)
CWE-ID: CWE-321 - Use of Hard-coded Cryptographic Key
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to decrypt captured network traffic.
The vulnerability exists due to the 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). A remote attacker with access to the hardcoded RC2 key can decrypt captured network traffic between the Metasys ADS/ADX servers or NAE/NIE/NCE engines and the connecting SMP user client.
Remediation
Install update from vendor's website.