FULL PRODUCT VERSION :
JRE6u10 or later


ADDITIONAL OS VERSION INFORMATION :
1. Microsoft Windows Server 2008 Enterprise(Windows Version: 6.1.6001)
      build 6001
      Service Pack1
      Japanese Edition
or 2.Microsoft Windows Vista(Windows Version: 6.1.6001)

EXTRA RELEVANT SYSTEM CONFIGURATION :
1.Machine/OS/IE
    CPU Intel(R) Xeon(R) CPU 2.50GHz
      [x64 Family 6 Model 23 Stepping 8]
      The number of the processor: 2
2. OS Microsoft Windows Server 2008 Enterprise(Windows Version: 6.1.6001)
      build 6001
      Service Pack1
      Japanese Edition
3.Internet Explorer 7
      Version : 7.0.6001.1800
4. Java Detail Version
¿¿Java Plug-in 1.6.0_12
¿¿JRE Version 1.6.0_12 Java HotSpot(TM) Client VM

A DESCRIPTION OF THE PROBLEM :
When using JRE6u12 on Windows Vista or Windows Server 2008, signed applet has no privilege to execute an executable-file(*1). For example, an exception occurs when an applet tries to execute a windows application(JRE's installer etc.) which is selected from the Filechooser.
   *1: Only executable-files which will be prompted for a username and admin password by UAC, such as an JRE's installer.

It occurs in the following enviorment.
   -Windows Vista or Windows Server2008
   -JRE6u10 or later
   -User logged on is an administrator(not build-in administrator)

It doesn't occur when JRE6u7 is installed.
When IE starts with "Run as administrator"through right-click menu, it also doesn't occur.
When UAC is turned off, it also doesn't occur.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.compile the test case into a jar and then sign it.
2.start IE to run the signed jar.
3.through "select a app", you can choose an executable-file. for example jre-6u12-windows-i586-p.exe

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
jre-6u12-windows-i586-p.exe can be started and sucessful message is shown.
ACTUAL -
The following message is shown.
"IOException occured"

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JOptionPane;

public class AccessTestApplet extends JApplet {
    String cmd;
    
    public void init() {
        cmd = getCmdString("osk.exe");
        
        //add a label to show text
        getContentPane().setLayout(new FlowLayout());
        JLabel label = new JLabel("Please select a application to start->");
        getContentPane().add(label);
        
        ActionListener actionLsn = new BtnAction();

        //add a button to start exe app
        JButton button2 = new JButton("select a app");
        button2.addActionListener(actionLsn);
        getContentPane().add(button2);
    }

    public void start() {
    }

    public void stop() {
        getContentPane().removeAll();
    }

    public void destroy() {
    }
    
    private String getCmdString(String exeFile) {
        String cmd = System.getenv("SystemRoot") + File.separator + "system32"
                + File.separator + exeFile;
        return cmd;
    }

    private void showMessage(String message) {
        JOptionPane.showMessageDialog(this, message);
    }

    private class BtnAction implements ActionListener {

        public void actionPerformed(ActionEvent arg0) {
            
            JButton btn = (JButton) arg0.getSource();
            String text = btn.getText();
            if (text.equals("start")) {
                startExe();
            } else if (text.equals("select a app")) {
                JFileChooser jfc = new JFileChooser();
                int returnVal = jfc.showOpenDialog(AccessTestApplet.this);
                if (returnVal == JFileChooser.APPROVE_OPTION) {
                    System.out.println("You chose to open this file: "
                            + jfc.getSelectedFile().getAbsolutePath());
                    cmd = jfc.getSelectedFile().getAbsolutePath();
                    startExe();
                }
            }
        }
        
        private void startExe() {
         // start a .exe
            try {
                Process pro = java.lang.Runtime.getRuntime().exec(cmd);
                pro.waitFor();
            } catch (SecurityException se) {
                se.printStackTrace();
                showMessage(" SecurityException occured! ");
            } catch (NullPointerException n) {
                n.printStackTrace();
                showMessage(" NullPointerException occured ");
            } catch (IllegalArgumentException iae) {
                iae.printStackTrace();
                showMessage(" IllegalArgmentException occured ");
            } catch (IOException ioe) {
                ioe.printStackTrace();
                showMessage(" IOException occured ");
            } catch (InterruptedException e) {
                e.printStackTrace();
                showMessage("InterruptedException ");
            } catch (Exception e) {
                e.printStackTrace();
                showMessage("Exception dumped into plug-in console");
            } finally {
            }
        }
    }
}
---------- END SOURCE ----------



Release Regression From : 6u7
The above release value was the last known release where this
bug was not reproducible. Since then there has been a regression.