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             AUSCERT External Security Bulletin Redistribution

                  ESB-2008.0754 -- [Win][Linux][Solaris]
         Security Vulnerabilities in Java Runtime Environment 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
CVE Names:            CVE-2007-5273 CVE-2007-5274

Revision History:  September 8 2008: Update to solution
                   October  29 2007: Resolution section updated
                   October  16 2007: Added CVE Names
                   October   5 2007: Initial Release

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   Solution Type: Sun Alert
   Solution  200041 :   Security Vulnerabilities in Java Runtime
   Environment May Allow Network Access Restrictions to be Circumvented          
   Previously Published As: 103078

   Bug ID: 6569621, 6609269

   Product
   Java 2 Platform, Standard Edition

   Date of Workaround Release: 03-OCT-2007

   Date of Resolved Release: 05-Sep-2008

   SA Document Body
   Security Vulnerabilities in Java Runtime Environment May Allow Network 
   Access Restrictions to be Circumvented

   1. Impact

    A vulnerability in the Java Runtime Environment (JRE) may allow
   malicious Javascript code that is downloaded by a browser from a
   malicious website to make network connections, through Java APIs, to
   network services on machines other than the one that the Javascript
   code 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.

    A second vulnerability in the JRE may allow an untrusted applet
   that is downloaded from a malicious website through a web proxy 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.

   Both issues are reported in the following publication:

   http://crypto.stanford.edu/dns/

   and the second issue is also reported at:

   http://seclists.org/fulldisclosure/2007/Jul/0159.html

   Sun acknowledges with thanks, Dan Boneh, Collin Jackson, Adam Barth,
   Andrew Bortz, Weidong Shao, and David Byrne for bringing these issues
   to our attention.

   2. Contributing Factors

   The first issue can occur in the following releases (for Windows,
   Solaris, and Linux running the Firefox and Opera browsers):
     * 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

   Note: This issue does not affect the Internet Explorer browser.

   The second 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

   This 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
   issues have been exploited.

   4. Workaround

   Several options to mitigate the risk of these vulnerabilities are
   documented in the Stanford DNS Rebinding paper referenced above. The
   options include modifying browsers, configuring DNS servers and
   firewalls. More details are available in the paper at the URL above
   (please see the Impact Statement).

   5. Resolution

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

    Mitigations for the first issue 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 are included in the following release (for Windows and Solaris 8):
     * SDK and JRE 1.3.1_21 and later

    Migitations for the second issue 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

   and are included in later releases of SDK and JRE 1.4.2 and 1.3.1.

   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
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   YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
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   This Sun Alert notification contains Sun proprietary and confidential
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   notification may only be used for the purposes contemplated by these
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   Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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