Smoothwall Express Reflected Cross-Site Scripting Vulnerability in hosts.cgi

A reflected cross-site scripting vulnerability has been identified in Smoothwall Express version 3.1-SP4-polar-x86_64-update9, specifically within the hosts.cgi script. This vulnerability allows attackers to inject arbitrary JavaScript into users' browsers by exploiting unvalidated parameters. The issue can be triggered by sending POST requests to the hosts.cgi endpoint with script payloads embedded in the IP, HOSTNAME, or COMMENT parameters.

Impact

Exploitation of this vulnerability allows for reflected cross-site scripting, where injected scripts are executed in the context of the user's browser.

Reproduction

To reproduce this vulnerability, send a POST request to the hosts.cgi endpoint with a script payload in one of the following parameters: IP, HOSTNAME, or COMMENT. The injected script will be executed in the user's browser, demonstrating the cross-site scripting vulnerability.