=====================================================================
                                   CERT-Renater

                        Note d'Information No. 2005/VULN738
_____________________________________________________________________

DATE                      : 30/11/2005

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running JDK and JRE 5.0 Update 3.

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

Sun(sm) Alert Notification
      * Sun Alert ID: 102017
      * Synopsis: Security Vulnerability With Java Management Extensions
        in the Java Runtime Environment may Allow Untrusted Applet to
        Elevate Privileges
      * Category: Security
      * Product: Java 2 Platform, Standard Edition
      * BugIDs: 6268876
      * Avoidance: Upgrade
      * State: Resolved
      * Date Released: 28-Nov-2005
      * Date Closed: 28-Nov-2005
      * Date Modified:

1. Impact

    A vulnerability with the Java Management Extensions (JMX)
    implementation included with the Java Runtime Environment (JRE) may
    allow an untrusted applet to elevate its privileges. For example an
    applet may grant itself permissions to read and write local files or
    execute local applications that are accessible to the user running the
    untrusted applet.

    Sun acknowledges, with thanks, Adam Gowdiak, for bringing this issue
    to our attention.

2. Contributing Factors

    This issue can occur in the following releases:

    Java 2 Platform Standard Edition
      * JDK and JRE 5.0 Update 3 (for Windows, Solaris and Linux)or
        earlier

    Note: SDK and JRE 1.4.2_xx and earlier, and 1.3.1_xx and earlier are
    not affected. All Java Management Extensions (JMX) reference
    implementations and all releases of the Java Dynamic Management Kit
    (JDMK) are not affected by this issue.

    To determine the default version of the JRE on a system:

    for Windows:
     Click "Start"
     Select "Run"
     Type "cmd"
     At the prompt, type "java -fullversion"

    for Solaris and Linux:
     % java -fullversion
     java full version "1.5.0_02-b09"

    Note: The above command only determines the default version. Other
    versions may also be installed on the system.

3. Symptoms

    There are no reliable symptoms that would show the described issue has
    been exploited.

4. Relief/Workaround

    There is no workaround. Please see Resolution section below.

5. Resolution

    This issue is addressed in the following releases:

    Java 2 Platform Standard Edition
      * JDK and JRE 5.0 Update 4 (for for Windows, Solaris, and Linux) or
        later

    J2SE 5.0 is available for download at the following links,
    http://java.sun.com/j2se/1.5.0/download.jsp and http://java.com.

    Note: It is recommended that affected versions be removed from your
    system. For more information, 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 2000-2005 Sun Microsystems, Inc., 4150 Network Circle, Santa
    Clara, CA 95054 U.S.A. All rights reserved

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

          =========================================================
          Les serveurs de référence du CERT-Renater
          http://www.urec.fr/securite
          http://www.cru.fr/securite
          http://www.renater.fr
          =========================================================
          + CERT-RENATER          | tel : 01-53-94-20-44          +
          + 151 bd de l'Hopital   | fax : 01-53-94-20-41          +
          + 75013 Paris           | email: certsvp@renater.fr     +
          =========================================================