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________________________________________________________________________________
                   Sun Microsystems, Inc. Security Bulletin
 
Bulletin Number:        #00199
Date:                   November 29, 2000
Cross-Ref:
Title:                  Potential security issue in class loading
________________________________________________________________________________

The information contained in this Security Bulletin is provided "AS IS." 
Sun makes no warranties of any kind whatsoever with respect to the information 
contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS, 
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________________________________________________________________________________

1. Background

   Under certain circumstances, the Java(TM) Runtime Environment may allow
   an untrusted Java class to call into a disallowed class. This is a 
   potential security issue.

   This issue may or may not affect other vendors' Java implementations
   which are derived from Sun's Java Development Kit JDK(TM) source base. 
   Sun has notified and made the remedy available to its Java licensees.
    
   To the best of Sun's knowledge, Netscape Navigator and Microsoft 
   Internet Explorer are not exposed to this vulnerability.

   Sun recommends that you upgrade to the latest JDK/JRE releases 
   listed in section 3 of this bulletin.
   
   
2. Affected Releases
   
   The following releases are affected:
   
     Windows Production and Solaris(TM) Reference Releases
   
     JDK/JRE 1.2.2_004 or earlier
     JDK/JRE 1.2.1_003 or earlier
     JDK/JRE 1.1.8_002 or earlier
     JDK/JRE 1.1.7B_005 or earlier
     JDK/JRE 1.1.6_007 or earlier

     Solaris Production Releases

     JDK/JRE 1.2.2_05 or earlier
     JDK/JRE 1.2.1
     JDK/JRE 1.1.8_10 or earlier
     JDK/JRE 1.1.7B
     JDK/JRE 1.1.6

     Linux Production Release

     JDK/JRE 1.2.2_005 or earlier
     
   Solaris Production releases JDK/JRE 1.2.1, 1.1.7B, and 1.1.6 should no
   longer be used. In addition, releases prior to JDK/JRE 1.1.6 for 
   Windows or Solaris should no longer be used. Users of these releases
   should upgrade to a later release listed in Section 3.
   
   This vulnerability was fixed in Java 2 Standard Edition SDK v 1.3.
      
   The HotSpot(TM) 1.0 and 1.0.1 virtual machines are affected by this
   vulnerability. HotSpot 2.0 is not affected by this vulnerability.  
   HotSpot 1.0 and 1.0.1 virtual machines should no longer be used.  
   Users that cannot move to Java 2 Standard Edition SDK v 1.3 should revert 
   to the Classic virtual machine in JDK/JRE 1.2.2_006 (Windows or Solaris 
   reference).  Those users wishing to take advantage of the performance 
   of HotSpot 2.0 should migrate to Java 2 Standard Edition SDK v 1.3.0.
   
   
3. Binary Update Releases

   The following update releases are available in relation to this issue.

   Windows Production and Solaris Reference Releases
   
   JDK/JRE 1.2.2_006    http://java.sun.com/products/jdk/1.2/
   JDK/JRE 1.2.1_004    http://java.sun.com/products/jdk/1.2.1/
   JDK/JRE 1.1.8_005    http://java.sun.com/products/jdk/1.1/
   JDK/JRE 1.1.7B_007   http://java.sun.com/products/jdk/1.1.7B/
   JDK/JRE 1.1.6_009    http://java.sun.com/products/jdk/1.1.6/

   Solaris Production Releases

   JDK/JRE 1.2.2_06     http://www.sun.com/software/solaris/java/download.html
   JDK/JRE 1.1.8_12     http://www.sun.com/software/solaris/java/archive.html

   Linux Production Release

   JDK/JRE 1.2.2_006    http://java.sun.com/products/jdk/1.2/download-linux.html

_______________________________________________________________________________
APPENDICES

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D.  To receive information or subscribe to our CWS (Customer Warning System) 
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        unsubscribe     Sender is removed from the CWS mailing list.
________________________________________________________________________________

Copyright 2000 Sun Microsystems, Inc. All rights reserved. Sun, 
Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks 
of Sun Microsystems, Inc. in the United States and other countries. This 
Security Bulletin may be reproduced and distributed, provided that this 
Security Bulletin is not modified in any way and is attributed to 
Sun Microsystems, Inc. and provided that such reproduction and distribution 
is performed for non-commercial purposes.


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