Note: This is an archival copy of Security Sun Alert 201660 as previously published on
Latest version of this security advisory is available from as Sun Alert 1001237.1.
Article ID : 1001237.1
Article Type : Sun Alerts (SURE)
Last reviewed : 2005-08-29
Audience : PUBLIC
Copyright Notice: Copyright © 2010, Oracle Corporation and/or its affiliates.

Security Vulnerability With Java Plug-in in JRE/SDK


Release Phase

Java 2 Platform, Standard Edition 1.4.2
Java 2 Platform, Standard Edition 1.4.1

Bug Id

Date of Resolved Release


A vulnerability in the Java Plug-in may allow an untrusted applet to escalate privileges, through JavaScript calling into Java code, including reading and writing files with the privileges of the user running the applet.

Sun acknowledges, with thanks, Jouko Pynnonen for bringing this issue to our attention, and iDEFENSE Inc. for coordinating the release of this issue.

This issue is described in the following document: CVE CAN-2004-1029 at

Contributing Factors

This issue can occur in the following releases:

  • SDK and JRE 1.4.2_05 and earlier, all 1.4.1 and 1.4.0 releases, and 1.3.1_12 and earlier

on the following platforms:

  • Solaris
  • Windows
  • Linux

Note: JDK and JRE 5.0 are not affected by this issue.

To determine the version of Java on a system, the following command can be run:

    % java -fullversion
java full version "1.4.1_06-b01"


There are no reliable symptoms that would indicate the described issue has been exploited.


Javascript may be disabled as a temporary workaround.


This issue is addressed in the following releases:

  • SDK and JRE 1.4.2_06 and later
  • SDK and JRE 1.3.1_13 and later

for the following platforms:

  • Solaris
  • Windows
  • Linux

J2SE releases are available for download at, at the following links:

Note: It is recommended that affected versions be removed from your system. For more information, please see the installation notes on the respective download pages.

Modification History
Date: 06-JAN-2005
  • Add additional "Note" to Resolution section

Date: 01-DEC-2004
  • New links added for J2SE download locations in "Resolution" section

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