Vulnerability Note VU#999601

Webmin and Usermin fail to sanitize user input

Overview

Webmin and Usermin do not properly sanitize user input. This vulnerability may allow a remote, unauthenticated user to view any file on the system running Webmin or Usermin.

I. Description

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.

II. Impact

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

III. Solution

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.

Systems Affected

Vendor	Status	Date Updated
Webmin	Unknown	7-Jul-2006

References

http://secunia.com/advisories/20892/
http://www.webmin.com/uchanges-1.210.html
http://club.mandriva.com/xwiki/bin/KB/SecureSssh5?xpage=code&

Credit

The Webmin team has reported this vulnerability.

This document was written by Ryan Giobbi.

Other Information

Date Public	06/30/2006
Date First Published	07/07/2006 08:43:59 AM
Date Last Updated	08/01/2006
CERT Advisory
CVE Name	CVE-2006-3392
US-CERT Technical Alerts
Metric	9.53
Document Revision	31

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Produced 2006 by US-CERT, a government organization
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