bugtraq - [SNS Advisory No.77] Usermin Remote Arbitrary Shell Command Execution Vulnerability

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Message-ID: <20040907173702.8ADA.SNSADV@lac.co.jp>
Date: Tue, 07 Sep 2004 17:40:53 +0900
From: snsadv@....co.jp (snsadv)
To: bugtraq@...urityfocus.com
Subject: [SNS Advisory No.77] Usermin Remote Arbitrary Shell Command Execution Vulnerability


----------------------------------------------------------------------
SNS Advisory No.77
Usermin Remote Arbitrary Shell Command Execution Vulnerability

Problem first discovered on: Sun, 11 Apr 2004
Published on: Tue, 7 Sept 2004
----------------------------------------------------------------------

Severity:
---------
Medium


Overview:
---------
  A vulnerability in Usermin's Web mail function could result in
  arbitrary OS command execution upon viewing a specially crafted 
  HTML mail.


Problem Description:
--------------------
  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 vulnerability exists in Usermin because the module responsible 
  for mail transmission fails to sanitize HTML mails including a link 
  to another Usermin module.  An attacker could take advantage of this 
  problem to execute arbitrary OS commands with the privileges of the 
  Usermin user.


Affected Versions:
------------------
  Usermin Version 1.070
  Usermin Version 1.080


Solution:
---------
  This problem can be addressed by upgrading Usermin to version 1.090.

    http://www.webmin.com/ 

Discovered by:
--------------
  Keigo Yamazaki


Acknowledgements:
-----------------
  Thanks to:

  Mr. Jamie Cameron


Disclaimer:
-----------
  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: 
  Reference:http://www.lac.co.jp/security/csl/intelligence/SNSadvisory_e/77_e.html

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Secure Net Service(SNS) Security Advisory <snsadv@....co.jp>
Computer Security Laboratory, LAC  http://www.lac.co.jp/security/