CVE-2023-43742

Name of the Vulnerable Software and Affected Versions Zultys MX-SE versions prior to 17.0.10 patch 17161 Zultys MX-SE II versions prior to 17.0.10 patch 17161 Zultys MX-E versions prior to 17.0.10 patch 17161 Zultys MX-Virtual versions prior to 17.0.10 patch 17161 Zultys MX250 versions prior to 17.0.10 patch 17161 Zultys MX30 versions prior to 17.0.10 patch 17161 Zultys MX-SE versions prior to 16.04 patch 16109 Zultys MX-SE II versions prior to 16.04 patch 16109 Zultys MX-E versions prior to 16.04 patch 16109 Zultys MX-Virtual versions prior to 16.04 patch 16109 Zultys MX250 versions prior to 16.04 patch 16109 Zultys MX30 versions prior to 16.04 patch 16109

Description An authentication bypass allows an unauthenticated attacker to obtain an administrative session via a protection mechanism failure in the authentication function. The Zultys MX Administrator Windows client connects to port 7505 and attempts authentication, submitting the administrator username and password to the server. Upon authentication failure, the server sends a login failure message prompting the client to disconnect. However, if the client ignores the failure message instead and attempts to continue, the server does not forcibly close the connection and processes all subsequent requests from the client as if authentication had been successful.

Recommendations For Zultys MX-SE, MX-SE II, MX-E, MX-Virtual, MX250, and MX30 with firmware versions prior to 17.0.10 patch 17161, update to version 17.0.10 patch 17161 or later. For Zultys MX-SE, MX-SE II, MX-E, MX-Virtual, MX250, and MX30 with firmware versions prior to 16.04 patch 16109, update to version 16.04 patch 16109 or later. As a temporary workaround, consider restricting access to port 7505 to minimize the risk of exploitation.