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SNS Advisory No.73
Usermin Cross-site Scripting Vulnerability

Problem first discovered on: Sun, 11 Apr 2004
Published on: Fri, 11 Jun 2004
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Overview:
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The web mail functionality of Usermin is prone to a cross-site
scripting vulnerability.

Problem Description:
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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 cross-site scripting vulnerability may occur because the web mail
module used by Usermin doesn't sanitize scripts embedded in received
emails. Attackers will be able to steal web cookies and gain unauthorized
access to the Usermin system.

Tested Versions:
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Usermin Version 1.070

Solution:
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This problem can be eliminated by upgrading to Usermin version 1.080,
which is available at:

http://www.webmin.com/

Discovered by:
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Keigo Yamazaki

Acknowledgements:
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Thanks to:
Mr. Jamie Cameron

Disclaimer:
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The information contained in this advisory may be revised without prior
notice and is provided as it is. Users shall take their own risk when
taking any actions following reading this advisory. LAC Co., Ltd. shall
take no responsibility for any problems, loss or damage caused by, or by
the use of information provided here.

This advisory can be found at the following URL:
http://www.lac.co.jp/security/csl/intelligence/SNSadvisory_e/73_e.html

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Secure Net Service(SNS) Security Advisory <snsadv (at) lac.co (dot) jp [email concealed]>
Computer Security Laboratory, LAC http://www.lac.co.jp/security/

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