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Severity: Low |
Zone Labs Ad-Blocking Instability
Overview: ZoneAlarm® Internet Security Suite and ZoneAlarm® Pro have been updated to address a vulnerability
in their ad-blocking functions. Specially crafted JavaScript may
cause a user's system to become unstable or lock
Date Published: November 18, 2004
Date Last Revised: November 18, 2004
Impact: The ad-blocking
feature in Zone Labs products is turned off by default. If this
feature has not been enabled, you are not impacted by this vulnerability.
Specially crafted JavaScript placed on a malicious website may
cause the software to become unstable and/or lock the system.
This issue presents no other risks to the computer user
Affected Products:
- ZoneAlarm Internet Security Suite, ZoneAlarm Pro
Unaffected Products:
- No other Zone Labs products are affected by this issue
Description: ZoneAlarm Internet Security Suite and ZoneAlarm Pro provide features to block specific types of advertising
from websites. However, using specially crafted JavaScript, a malicious
webpage could cause the software or system to lock. This vulnerability
requires two specific prerequisites:
- Ad-blocking must be enabled
- The user must visit a website with malicious Java Script
This vulnerability has been resolved in version 5.5.094 of affected Zone
Labs products. Version 5.5.094 was released on November 8, 2004.
Users configured to receive automatic product updates will receive this
update automatically. Users configured to receive manual updates should
use the Check For Update option – see the Recommended Actions section
below.
Recommended Actions: ZoneAlarm Internet Security Suite
and ZoneAlarm Pro users will receive the update through a product update.
Users with automatic updates:
You receive the update automatically. No further action is required.
Users with manual updates:
To manually update your Zone Labs software:
- Select Overview | Preferences.
- In the Check For Update section, click Check
For Update.
- If neccesary, follow the instructions to update your software.
ZoneAlarm Internet Security Suite and ZoneAlarm Pro versions 5.5.094 and newer are
not impacted by this issue.
Related Resources:
- Zone Labs Security Response Center:
http://www.zonelabs.com/security
Acknowledgments: Zone Labs would like
to thank Nicolas Robillard for reporting this issue.
Contact: Zone Labs customers who are concerned about information contained in this advisory or have additional technical questions may reach our Technical Support team at: http://www.zonelabs.com/support/. To report security issues with Zone Labs products contact security@zonelabs.com.
Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. Zone Labs and Zone Labs products, are registered trademarks of Zone Labs Incorporated. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.
Copyright: ©2004 Zone Labs LLC All rights reserved. Zone Labs, TrueVector, ZoneAlarm, and Cooperative Enforcement are registered trademarks of Zone Labs LLC The Zone Labs logo, Check Point Integrity and IMsecure are trademarks of Zone Labs, Inc. Check Point Integrity protected under U.S. Patent No. 5,987,611. Reg. U.S. Pat. & TM Off. Cooperative Enforcement is a service mark of Zone Labs LLC All other trademarks are the property of their respective owners.
Any reproduction of this alert other than as an unmodified copy
of this file requires authorization from Zone Labs. Permission
to electronically redistribute this alert in its unmodified form
is granted. All other rights, including the use of other media,
are reserved by Zone Labs LLC.
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