[UNIX] Webmin/Usermin Cross-site Scripting Vulnerability

From: support@securiteam.com
Date: 05/08/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Wed,  8 May 2002 21:01:31 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  Webmin/Usermin Cross-site Scripting Vulnerability
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SUMMARY

The authentication page of both Webmin and Usermin is prone to a
cross-site scripting vulnerability.

DETAILS

Vulnerable systems:
 * Webmin version 0.960 and prior
 * Usermin version 0.90 and prior

Immune systems:
 * Webmin version 0.970
 * Usermin version 0.910

Webmin is a web-based system administration tool for UNIX. Usermin is a
web interface that allows all users on a UNIX system to easily receive
mails and to perform SSH and mail forwarding configuration. A potential
cross-site scripting vulnerability may occur because the CGI script of the
authentication page used by both Webmin and Usermin, prints user's input
on the error page.

Webmin and Usermin users' session ID cookies cannot be acquired, since
this problem only occurs when users are not logged into these software
packages. However, there is a possibility that the cookie of a Web service
may be stolen if it is running on the same host as of Webmin/Usermin.

Solution:
This problem can be eliminated by upgrading to Webmin version 0.970
/Usermin version 0.910, which are available at the following URL:
<http://www.webmin.com/> http://www.webmin.com/

ADDITIONAL INFORMATION

The information has been provided by <mailto:snsadv@lac.co.jp> Keigo
Yamazaki.

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