SB2020031122 - Denial of service in Johnson Controls Metasys

Description

This security bulletin contains information about 1 security vulnerability.

1) XML External Entity injection (CVE-ID: CVE-2020-9044)

The vulnerability allows a remote attacker to gain access to sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and harvest ASCII files from the server.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or cause a denial of service condition on the target system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://www.us-cert.gov/ics/advisories/icsa-20-070-05
• https://www.johnsoncontrols.com/-/media/jci/cyber-solutions/product-security-advisories/2020/jci-psa-2020_3-v1-microsoft_net-framework.pdf?la=en&hash=FFFFDCAB051B8EB3DA1C605C966F077F28AE1BD3