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Category:   Application (Generic)  >   Oracle Java SE Vendors:   Sun
Java JNLPAppletLauncher Flaw Lets Remote Users Write Arbitrary Files
SecurityTracker Alert ID:  1022657
SecurityTracker URL:  http://securitytracker.com/id/1022657
CVE Reference:   CVE-2009-2676   (Links to External Site)
Updated:  Aug 7 2009
Original Entry Date:  Aug 5 2009
Impact:   Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): JDK and JRE 6 Update 14 and prior, JDK and JRE 5.0 Update 19 and prior, SDK and JRE 1.4.2_21 and prior 1.4 versions
Description:   A vulnerability was reported in the Java JNLPAppletLauncher. A remote user can write arbitrary files on the target system.

A remote user can create a specially crafted applet that, when loaded by the target user, will invoke a non-current version of the JNLPAppletLauncher to write arbitrary files on the target user's system.

SDK and JRE 1.3.1 are not affected.

John Heasman repored this vulnerability.

Impact:   A remote user can write arbitrary files on the target system.
Solution:   Sun has issued a blacklist in the fix 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

http://java.sun.com/javase/6/webnotes/6u14.html

Java SE releases are available at:

JDK and JRE 6 Update 15:

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

JRE 6 Update 15:

http://java.com/

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:

http://www.java.com/en/download/help/5000010800.xml

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

http://download.java.net/media/applet-launcher/applet-launcher.jar

The vendor's advisory is available at:

http://sunsolve.sun.com/search/document.do?assetkey=1-66-263490-1

Vendor URL:  sunsolve.sun.com/search/document.do?assetkey=1-66-263490-1 (Links to External Site)
Cause:   Not specified
Underlying OS:  Linux (Any), UNIX (Solaris - SunOS), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Aug 7 2009 (Red Hat Issues Fix) Java JNLPAppletLauncher Flaw Lets Remote Users Write Arbitrary Files
Red Hat has released a fix for java-1.5.0-sun for Red Hat Enterprise Linux 4 and 5.
Aug 7 2009 (Red Hat Issues Fix) Java JNLPAppletLauncher Flaw Lets Remote Users Write Arbitrary Files
Red Hat has released a fix for java-1.6.0-sun for Red Hat Enterprise Linux 4 and 5.
Oct 21 2009 (Oracle Issues Fix for BEA JRockit) Java JNLPAppletLauncher Flaw Lets Remote Users Write Arbitrary Files
Oracle has issued a fix for BEA JRockit.
Nov 12 2009 (Red Hat Issues Fix) Java JNLPAppletLauncher Flaw Lets Remote Users Write Arbitrary Files
Red Hat has issued a fix for java-1.6.0-ibm for Red Hat Enterprise Linux 4 Extras and 5 Supplementary.



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