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Vulnerabilities - November 22, 2004

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(Fix available) Sun Java Plug-in Java-to-Javascript Bug

In reply to: Vulnerabilities - November 22, 2004

Sun Java Plug-in Java-to-Javascript Bug Lets Remote Applets Execute Arbitrary Code

Version(s): prior to 1.4.2_06

Description: iDEFENSE reported a vulnerability in Sun's Java plug-in. A remote applet can bypass Java sandbox security mechanisms and execute arbitrary code on the target system.

It is reported that a remote user can create an applet that, when loaded by the target user, can exploit a flaw in the plug-in's Java to Javascript data exchange to bypass access controls and load an unsafe Java class. The applet can upload or download arbitrary files and execute arbitrary files with the privileges of the target user.

Web browsers using the plug-in with an affected version of the Java Virtual Machine are vulnerable.

The vendor was notified on June 29, 2004.

The original advisory is available at:

http://www.idefense.com/application/ poi/display?id=158&type=vulnerabilities
Impact: A remote user can execute arbitrary code on the target user's system.
Solution: The vendor has issued a fixed version (1.4.2_06), available at:



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Apple's iCal calendar software vulnerability

In reply to: Vulnerabilities - November 22, 2004

Version(s): prior to 1.5.4

Description: A vulnerability was reported in Apple's iCal calendar software. A remote user can create a calendar that, when imported, will add alarm actions without authorization.

The iCal calendar alarms can execute applications and send e-mail messages.

The vendor credits aaron@vtty.com with reporting this flaw.

Impact: A remote user (with authority to add an iCal calendar) can add alarms without approval.

Solution: The vendor has issued a fixed version (1.5.4), available at from the Software Update pane in System Preferences, or via Apple's iCal web site:


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Prevx Home Protection Mechanisms Can Be Disabled

In reply to: Vulnerabilities - November 22, 2004

By Local Adminsitrative Users

Version(s): 1.0; Tested on 1.0 Build

Description: Tan Chew Keong of SIG^2 reported a vulnerability in Prevx Home. A local user can disable the registry and buffer overflow protection mechanisms.

It is reported that a local user with administrative privileges can modify SDT ServiceTable entries by directly writing to '\device\physicalmemory' to return the entires to their original settings, thereby disabling the kernel hooks and preventing Prevx Home from performing its protection functions.

The vendor was notified on September 6, 2004.

The original advisory is available at:

Impact: A local administrative user can disable the protection mechanisms.

Solution: The vendor has released a fixed version (2.0).


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