Phoenix Contact FL SWITCH 2xxx Firmware Reflected Cross-Site Scripting Vulnerability

A reflected cross-site scripting vulnerability has been identified in the web-based management interface of Phoenix Contact FL SWITCH 2xxx devices running firmware prior to 3.50. This vulnerability allows an unauthenticated remote attacker to deceive an authenticated user into clicking a malicious link, which can then be used to alter configuration parameters accessible through the web management interface. The session cookie is protected with the httpOnly flag, preventing the attacker from hijacking the user's session.

Impact

Exploitation of this vulnerability allows for reflected cross-site scripting, where an attacker can inject malicious scripts that are executed in the context of the user's browser.

Remediation

Users are advised to update to the latest FL SWITCH 2xxx firmware version 3.50, which addresses this vulnerability.