Webmin is a web-based interface for system administration for Unix. Using any modern web browser, you can setup user accounts, Apache, DNS, file sharing and much more. Webmin removes the need to manually edit Unix configuration files like /etc/passwd, and lets you manage a system from the console or remotely.
It is possible for a malicious user to view any file on the server, including root owned files, by creating a hardlink under the user accessible mail directory which will then be rendered within Webmin.
This vulnerability is rated as HIGH due to the fact that sensitive information can be obtained.
This vulnerability was tested against Webmin 1.720.
This vulnerability was patched in Webmin 1.730.