JDK and JRE Blacklist Entry for JNLPAppletLauncher Vulnerability

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JDK and JRE Blacklist Entry for JNLPAppletLauncher Vulnerability

1. Impact

A security vulnerability in the JNLPAppletLauncher may impact users of the Sun JDK and JRE. Non-current versions of the JNLPAppletLauncher may be re-purposed with an untrusted Java applet to write arbitrary files on the system of the user downloading and running the untrusted applet.

The JNLPAppletLauncher is a general purpose JNLP-based applet launcher class for deploying applets that use extension libraries containing native code.

For more information about JNLPAppletlauncher, see https://applet-launcher.dev.java.net/

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

2. Contributing Factors

This issue can occur in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 14 and earlier
• JDK and JRE 5.0 Update 19 and earlier

and in the following Java SE for Business releases for Windows, Solaris, and Linux:

• SDK and JRE 1.4.2_21 and earlier

Note: SDK and JRE 1.3.1 are not affected.

To determine the default version of the JRE that Internet Explorer uses, visit the URL:


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:


The above indicates that the version of the JRE the browser uses is version 6 Update 13.

3. Symptoms

Users who download non-current versions of the JNLPAppletLauncher will see a warning dialog stating that the digital signature has expired.

4. Workaround

There is no workaround for this issue. Please see the Resolution section below.

5. Resolution

A Blacklist entry to block an earlier version of the JNLPAppletLauncher from loading is included in the following Java SE and Java SE for Business releases for Windows, Solaris, and Linux:

• JDK and JRE 6 Update 15 or later

Note: Users should install JDK and JRE 6 Update 15 or later on systems running JDK and JRE 5.0 and SDK and JRE 1.4.2 to take advantage of this blacklist feature.

For more information about the Blacklist Jar Feature, see
     

Java SE releases are available at:

JDK and JRE 6 Update 15:


JRE 6 Update 15:


through the Java Update tool for Microsoft Windows users.

JDK 6 Update 15 for Solaris is available in the following patches:

• Java SE 6 Update 15 (as delivered in patch 125136-16)
• Java SE 6 Update 15 (as delivered in patch 125137-16 (64bit))
• Java SE 6_x86 Update 15 (as delivered in patch 125138-16)
• Java SE 6_x86 Update 15 (as delivered in patch 125139-16 (64bit))

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:


Note: Sun recommends that sites that have re-hosted the JNLPAppletLauncher update to the current version which is available at:


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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.




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