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             AUSCERT External Security Bulletin Redistribution

               ESB-2005.0050 -- Sun Alert Notification 57707
   Java Runtime Environment Remote Denial-of-Service (DoS) Vulnerability
                              18 January 2005

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Java SDK and JRE
Publisher:         Sun Microsystems
Operating System:  Solaris
                   Linux variants
                   Windows
Impact:            Denial of Service
Access:            Remote/Unauthenticated

Original Bulletin: 
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57707-1

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   Sun(sm) Alert Notification 
     * Sun Alert ID: 57707
     * Synopsis: Java Runtime Environment Remote Denial-of-Service (DoS)
       Vulnerability
     * Category: Security
     * Product: Java SDK and JRE
     * BugIDs: 5037001
     * Avoidance: Upgrade
     * State: Resolved
     * Date Released: 20-Dec-2004
     * Date Closed: 20-Dec-2004
     * Date Modified:

   1. Impact A vulnerability in the Java Runtime Environment (JRE)
   involving object deserialization could be exploited remotely to cause
   the Java Virtual Machine to become unresponsive, which is a type of
   Denial-of-Service (DoS). This issue can affect the JRE if an
   application that runs on it accepts serialized data from an untrusted
   source.

   Sun acknowledges with thanks, Marc Schoenefeld, for bringing this
   issue to our attention.

   2. Contributing Factors This issue can occur in the following
   releases:

     * SDK and JRE 1.4.2_05 and earlier, and all 1.4.1 and 1.4.0 releases
       for Windows, Solaris and Linux

   Note: JDK and JRE 5.0 and releases prior to SDK and JRE 1.4 are not
   affected by this issue.

   To determine the version of Java on a system, the following command
   can be run:

    % java -fullversion
    java full version "1.4.1_06-b01"

   3. Symptoms The Java Runtime Environment (JRE) is unresponsive.

   Solution Summary [2]Top

   4. Relief/Workaround There is no workaround. Please see the
   "Resolution" section below.

   5. Resolution This issue is addressed in the following releases:

     * SDK and JRE 1.4.2_06 and later for Windows, Solaris, and Linux

   J2SE releases are available for download at:

     * J2SE 5.0 at [3]http://java.sun.com/j2se/1.5.0/download.jsp
     * J2SE 1.4.2_06 at [4]http://java.sun.com/j2se/1.4.2/download.html
       and [5]http://java.com/

   Note: It is recommended that affected versions be removed from your
   system. For more information, please see the installation notes on the
   respective java.sun.com download pages.

   This Sun Alert notification is being provided to you on an "AS IS"
   basis. This Sun Alert notification may contain information provided by
   third parties. The issues described in this Sun Alert notification may
   or may not impact your system(s). Sun makes no representations,
   warranties, or guarantees as to the information contained herein. ANY
   AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
   WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
   NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
   YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
   INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
   OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
   This Sun Alert notification contains Sun proprietary and confidential
   information. It is being provided to you pursuant to the provisions of
   your agreement to purchase services from Sun, or, if you do not have
   such an agreement, the Sun.com Terms of Use. This Sun Alert
   notification may only be used for the purposes contemplated by these
   agreements.

   Copyright 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved.

References

   1. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57707-1#top
   2. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57707-1#top
   3. http://java.sun.com/j2se/1.5.0/download.jsp
   4. http://java.sun.com/j2se/1.4.2/download.html
   5. http://java.com/

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===========================================================================
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