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ESB-2007.0544 -- [Win][UNIX/Linux] -- Vulnerability in Java Runtime Environment May Allow an Untrusted Applet to Circumvent Network Access Restrictions

Date: 08 August 2007
References: ESB-2007.0593  AA-2007.0071  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                    ESB-2007.0544 -- [Win][UNIX/Linux]
Vulnerability in Java Runtime Environment May Allow an Untrusted Applet to
                  Circumvent Network Access Restrictions
                               8 August 2007

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

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

Product:              Java 2 Platform, Standard Edition
                      JDK and JRE 6 Update 1 and prior
                      JDK and JRE 5.0 Update 11 and prior
                      SDK and JRE 1.4.2_14 and prior
Publisher:            Sun Microsystems
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact:               Inappropriate Access
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-3922

Original Bulletin:  
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102995-1

Revision History:  August 8 2007: Added CVE Name
                    July 20 2007: Initial Release

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

Sun(sm) Alert Notification
     * Sun Alert ID: 102995
     * Synopsis: A Security Vulnerability in the Java Runtime Environment
       May Allow an Untrusted Applet to Circumvent Network Access
       Restrictions
     * Category: Security
     * Product: Java 2 Platform, Standard Edition
     * BugIDs: 6509141
     * Avoidance: Patch, Upgrade
     * State: Resolved
     * Date Released: 18-Jul-2007
     * Date Closed: 18-Jul-2007
     * Date Modified: 

1. Impact

   A security vulnerability in the Java Runtime Environment Applet Class
   Loader may allow an untrusted applet that is loaded from a remote
   system to circumvent network access restrictions and establish socket
   connections to certain services running on the local host, as if it
   were loaded from the system that the applet is running on. This may
   allow the untrusted remote applet the ability to exploit any security
   vulnerabilities existing in the services it has connected to.

   Sun acknowledges with thanks, John Heasman of NGSSoftware, for
   bringing this issue to our attention.

2. Contributing Factors

   This issue can occur in the following releases (for Windows, Solaris,
   and Linux):
     * JDK and JRE 6 Update 1 and earlier
     * JDK and JRE 5.0 Update 11 and earlier
     * SDK and JRE 1.4.2_14 and earlier

   To determine the default version of the JRE on a system for Solaris
   and Linux, the following command can be run:
    % java -version

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

   To determine the default version of the JRE on a system for Windows:
    1. Click "Start"
    2. Select "Run"
    3. Type "cmd" (starts a command-line)
    4. At the prompt, type "java -version"

   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 indicate the described issue
   has been exploited to elevate privileges. 

4. Relief/Workaround

   There is no workaround. Please see the "Resolution" section below.

5. Resolution

   This issue is addressed in the following releases (for Windows,
   Solaris, and Linux):
     * JDK and JRE 6 Update 2 or later
     * JDK and JRE 5.0 Update 12 or later
     * SDK and JRE 1.4.2_15 or later

   Java SE 6 Update 2 is available for download at:
     * http://java.sun.com/javase/downloads/index.jsp
     * http://java.com

   Java SE 6 Update 2 for Solaris is available in the following patches:
     * Java SE 6: update 2 (as delivered in patch 125136-02 or later)
     * Java SE 6: update 2 (as delivered in patch 125137-02 or
       later (64bit))
     * Java SE 6_x86: update 2 (as delivered in patch 125138-02 or
       later)
     * Java SE 6_x86: update 2 (as delivered in patch 125139-02 or
       later (64bit))

   Java SE 5.0 Update 12 is available for download at:
     * http://java.sun.com/javase/downloads/index_jdk5.jsp

   Java SE 5.0 Update 12 for Solaris is available in the following
   patches:
     * Java SE 5.0: update 12 (as delivered in patch 118666-12 or
       later)
     * Java SE 5.0: update 12 (as delivered in patch 118667-12 or
       later (64bit))
     * Java SE 5.0_x86: update 12 (as delivered in patch 118668-12 or
       later)
     * Java SE 5.0_x86: update 12 (as delivered in patch 118669-12 or
       later (64bit))

   SDK and JRE 1.4.2_15 is available for download at:

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

   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

   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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

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