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             AUSCERT External Security Bulletin Redistribution

                  ESB-2008.0755 -- [Win][Linux][Solaris]
Security Vulnerability in Java Runtime Environment With Applet Caching May
           Allow Network Access Restrictions to be Circumvented
                             8 September 2008

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

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

Product:              JDK and JRE 6 Update 2 and prior
                      JDK and JRE 5.0 Update 12 and prior
                      SDK and JRE 1.4.2_15 and prior
                      SDK and JRE 1.3.1_20 and prior
Publisher:            Sun Microsystems
Operating System:     Windows
                      Linux variants
                      Solaris
Impact:               Inappropriate Access
Access:               Remote/Unauthenticated

Revision History:  September 8 2008: Updated Resolution section
                   October  29 2007: Updated Resolution section
                   October   5 2007: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

   Solution Type: Sun Alert
   Solution  201519 :   Security Vulnerability in Java Runtime
   Environment With Applet Caching May Allow Network Access Restrictions
   to be Circumvented          
   Previously Published As: 103079

   Bug ID: 6594007

   Product
   Java 2 Platform, Standard Edition

   Date of Workaround Release: 03-OCT-2007

   Date of Resolved Release: 05-Sep-2008

   SA Document Body
   Security Vulnerability in Java Runtime Environment With Applet Caching May 
   Allow Network Access Restrictions to be Circumvented

   1. Impact

   A vulnerability in the Java Runtime Environment (JRE) with applet
   caching may allow an untrusted applet that is downloaded from a
   malicious website to make network connections to network services on
   machines other than the one that the applet was downloaded from. This
   may allow network resources (such as web pages) and vulnerabilities
   (that exist on these network services) which are not otherwise
   normally accessible to be accessed or exploited.

   Sun acknowledges with thanks, Billy Rios for bringing this issue to
   our attention.

   This issue has been reported at:

   http://conference.hitb.org/hitbsecconf2007kl/?page_id=148

   2. Contributing Factors

   This issue can occur in the following releases (for Windows, Solaris,
   and Linux):
     * JDK and JRE 6 Update 2 and earlier
     * JDK and JRE 5.0 Update 12 and earlier
     * SDK and JRE 1.4.2_15 and earlier
     * SDK and JRE 1.3.1_20 and earlier

   To determine the default version of the JRE that Internet Explorer
   uses:
    1. Click "Tools" in the Menu Bar at the top of the browser
    2. Select "Sun Java Console"
    3. The first two lines in the console displays the version of Java
       Plug-in and JRE that Internet Explorer uses

   To determine the default version of the JRE that Mozilla or Firefox
   browsers use, visit the URL "about:plugins".

   The browser will display a page called "Installed plug-ins" which
   lists the version of the Java Plug-in such as the following:

   Java(TM) Plug-in 1.5.0_11-b03

   The above example indicates that the version of the JRE that the
   browser uses is 1.5.0_11.

   3. Symptoms

   There are no predictable symptoms that would indicate that the above
   issue is being exploited.

   4. Workaround

   To mitigate against DNS rebinding attacks, sites can remove internal
   IP addresses in DNS lookup results from external DNS servers. This can
   be done by either filtering such packets at the firewall or by
   modifying the DNS servers used by clients inside the firewall.

   5. Resolution

   Sun has included changes that perform additional hostname matching
   using DNS reverse mapping data to mitigate these issues in the
   following releases. (We are working with industry partners to more
   fully address these issues and will include additional improvements in
   later update releases.)

   Mitigations are included in the following releases (for Windows,
   Solaris and Linux):
     * JDK and JRE 6 Update 3 and later
     * JDK and JRE 5.0 Update 13 and later
     * SDK and JRE 1.4.2_16 and later

   and is included in the following release (for Windows and Solaris 8):
     * SDK and JRE 1.3.1_21 and later

   JDK and JRE 6 Update 3 is available for download at:

   http://java.sun.com/javase/downloads/index.jsp

   http://java.com

   JDK 6 Update 3 for Solaris is available in the following patches:
     * Java SE 6: update 3 (as delivered in patch 125136-04 or later)
     * Java SE 6: update 3 (as delivered in patch 125137-04 or later
       (64bit))
     * Java SE 6_x86: update 3 (as delivered in patch 125138-04 or
       later)
     * Java SE 6_x86: update 3 (as delivered in patch 125139-04 or
       later (64bit))

   JDK and JRE 5.0 Update 13 is available for download at:

   http://java.sun.com/javase/downloads/index_jdk5.jsp

   JDK 5.0 Update 13 for Solaris is available in the following patches:
     * J2SE 5.0: update 13 (as delivered in patch 118666-14 or later)
     * J2SE 5.0: update 13 (as delivered in patch 118667-14 or later
       (64bit))
     * J2SE 5.0_x86: update 13 (as delivered in patch 118668-14 or
       later)
     * J2SE 5.0_x86: update 13 (as delivered in patch 118669-14 or
       later (64bit))

   SDK and JRE 1.4.2_16 is available for download at:

   http://java.sun.com/j2se/1.4.2/download.html

   SDK and JRE 1.3.1 for Solaris 8 is available for download at:

   http://java.sun.com/j2se/1.3/download.html

   SDK and JRE 1.3.1 has completed the Sun End of Life (EOL) process and
   is only supported for customers with Solaris 8 and Vintage Support
   Offering support contracts (see
   http://java.sun.com/j2se/1.3/download.html). Sun strongly
   recommends that users upgrade to the latest releases.

   Note: When installing a new version of the product from a source other
   than a Solaris patch, it is recommended that the old affected versions
   be removed from your system. To remove old affected versions on the
   Windows platform, please see:

   http://java.com/en/download/help/uninstall_java.xml
   For more information on Security Sun Alerts, see Technical
   Instruction ID 213557.
   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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved
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