Software Engineering Institute

Webmin

Webmin is popular web-based administration tool for Unix and Linux servers that allows system administrators to make changes to system processes.

Usermin

Usermin offers an interface similar to Webmin, but is designed for regular users who are not responsible for system administration tasks.

The Problem

There is an input validation vulnerability in Usermin and Webmin that could allow a remote, unauthenticated attacker could view any file on the computer running Webmin or Usermin.

An attacker could read any file on the computer running Webmin or Usermin.

Upgrade
Usermin version Version 1.220 and Webmin version 1.290 have been released to address this vulnerability.

Restrict Access

Restrict access to the Webmin and Usermin servers to trusted hosts. Note that in addition to firewall and VPN access control methods, both Webmin and usermin can use SSH tunneling to provide additional layers of encryption and authorization.