L-033: Sun Java Web Server Vulnerability

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                   Sun Microsystems, Inc. Security Bulletin

Bulletin Number:                #00197
Date:                   August 23, 2000
Cross-Ref:              Foundstone Advisory FS-082200-11-JWS
Title:                  Java Web Server
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1.  Bulletins Topics

    Sun announces the release of patches for Java Web Server 2.0 and 1.1.3
    which relate to a vulnerability with the administration module.

    Sun recommends that you install the patches listed in section 4
    immediately on systems running Java Web Server.

2.  Who is Affected

        Vulnerable:             All versions of Java Web Server

3.  Understanding the Vulnerability

    It is possible to use the administration module to invoke servlets
    on a Java Web Server.  With carefully crafted JSP tags it is possible
    to execute arbitrary commands on the Web Server.

4.  List of Patches

    The following patches are available in relation to the above problem.
    For Java Web Server 1.1.1 or 1.1.2, first upgrade the Java Web Server
    and then install the appropriate patch.

    Java Web Server Version     Patch ID
    _______________________     ________

    1.1.3                       Patch 3
    2.0                         Patch 3

    Patches are available at:

    http://java.sun.com/products/java-server/jws113patch3.html

    http://java.sun.com/products/java-server/jws20patch3.html

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Sun acknowledges, with thanks, Foundstone, Inc. for bringing this
vulnerability to our attention.
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APPENDICES

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______________________________________________________________________________


Copyright 2000 Sun Microsystems, Inc. All rights reserved. Sun,
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