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             AUSCERT External Security Bulletin Redistribution

                          ESB-2008.0184 -- [Win]
            Possible Java plug-in vulnerability in Lotus Notes
                             21 February 2008


        AusCERT Security Bulletin Summary

Product:              Lotus Notes 7.0
                      Lotus Notes 6.5.6
Publisher:            IBM
Operating System:     Windows
Impact:               Increased Privileges
Access:               Remote/Unauthenticated

Original Bulletin:    

Comment: Lotus Notes version 8.0 is not affected by this vulnerability.

- --------------------------BEGIN INCLUDED TEXT--------------------

Possible Java plug-in vulnerability in Lotus Notes

Technote (FAQ)

David Gloede contacted IBM Lotus to report that the Notes client
was affected by a Java plug-in vulnerability originally documented
in an advisory by Jouko Pynnonen. This Java vulnerability involves
the execution of JavaScript within a Java applet to gain escalated

In order for an attacker to successfully exploit this vulnerability
in previous releases, the following must be accomplished:

(1) Lotus Notes client must have the "Enable Java access from
    JavaScript" option enabled within User Preferences.

(2) Attacker must create a Java applet which utilizes JavaScript
    to execute Java code that will escalate the attackers access

(3) Attacker must attach the Java applet to an email and send the
    mail message to a user.

(4) User must open the message.

Jouko Pynnonen's original advisory is available at the following link:

The related Sun advisory is available at the following link:

The Java Virtual Machine (JVM) fix for the vulnerability reported
as Sun Alert # 57591/101523 has been incorporated into Notes release
7.0.2. Notes release 8.0 is not affected by this vulnerability.

For Notes releases prior to 7.0.2, it is recommended that you disable
the "Enable Java access from JavaScript" preference.

To manage the User Preferences for a all users

Administrators can centrally manage the User Preferences by using
a Desktop Policy.

1. Open the Domino Directory and go to the Policy section.

2. Choose the Desktop Policy and navigate to the "Preferences" tab

3. Select the "Miscellaneous" tab.

4. Deselect "Enable Java access from JavaScript".

To learn more about the Desktop Policy and how to manage it, refer
to the Domino Administrator Help.

To change the User Preferences for a single user.

1. From the Lotus Notes menu, select File ->Preferences ->User Preferences.

2. Select the Basics tab, and navigate to the Additional Options section.

3. Deselect "Enable Java access from JavaScript".

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