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Sun Java Web Start security bypass vulnerability

Vulnerability Note VU#652636

Original Release Date: 2006-02-09 | Last Revised: 2006-02-19


A vulnerability in the Sun Java Web Start may allow an untrusted Java applet or application to bypass security restrictions and execute arbitrary code.


Java Web Start technology allows Java applications and applets to be executed via HTTP. Remote applications and applets are specified using the Java Network Launching Protocol (JNLP). The JNLP specification describes the resouces, parameters, and permissions needed to execute the remote application or applet. By default, Java Web Start applications and applets are restricted in what they can access on a host machine. However, an unspecified vulnerability in Java Web Start may allow a Java applet or application to bypass the Java Web Start security restrictions. Once the security restrictions are bypassed, the malicious applet may be able to access and manipulate system resources.

For more information regarding this vulnerability, please refer to Sun Alert 102170.


By convincing a user to run a specially crafted Java applet or application via Java Web Start, a remote, unauthenticated attacker may be able to execute arbitrary code.


This Java Web Start issue was corrected in Java 2 Platform Standard Edition 5.0 Update 6 and later.

Disable Java Web Start

Sun Alert 102170 provides information on how to disable Java Web Start in different web browsers.

Vendor Information


Sun Microsystems, Inc. Affected

Updated:  February 09, 2006



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


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CVSS Metrics

Group Score Vector



This vulnerability was reported in Sun Alert 102170. Sun credits Peter Csepely with providing information about this issue.

This document was written by Jeff Gennari.

Other Information

CVE IDs: CVE-2006-0613
Severity Metric: 10.94
Date Public: 2006-02-07
Date First Published: 2006-02-09
Date Last Updated: 2006-02-19 13:37 UTC
Document Revision: 29

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