Advisory Details

May 24th, 2023

Moxa MXsecurity Series Hardcoded JWT Key Authentication Bypass Vulnerability

CVE ID	CVE-2023-33236
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Moxa
AFFECTED PRODUCTS	MXsecurity Series
VULNERABILITY DETAILS	This vulnerability allows remote attackers to bypass authentication on affected installations of Moxa MXsecurity Series appliances. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the web-based interface. The issue results from a hardcoded JWT secret within the application configuration. An attacker can leverage this vulnerability to bypass authentication on the system.
ADDITIONAL DETAILS	Moxa has issued an update to correct this vulnerability. More details can be found at: https://www.moxa.com/en/support/product-support/security-advisory/mxsecurity-command-injection-and-hardcoded-credential-vulnerabilities
DISCLOSURE TIMELINE	2023-01-24 - Vulnerability reported to vendor 2023-05-24 - Coordinated public release of advisory
CREDIT	Simon Janz (@esj4y)

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