Date Discovered September 13, 2006
Description Microsoft Internet Explorer is prone to a heap-based buffer-overflow vulnerability.
The vulnerability arises because of the way Internet Explorer tries to instantiate certain COM objects as ActiveX controls.
An attacker can exploit this issue to execute arbitrary code within the context of the affected application. Failed exploit attempts will result in a denial-of-service condition.
This issue is similar to, but separate from, the one described in BID 19738 (Microsoft Internet Explorer Daxctle.OCX Spline Method Heap Buffer Overflow Vulnerability).
Microsoft has released information stating that this issue is being exploited publicly in limited attacks.
Run all software as a nonprivileged user with minimal access rights. Ensure that all non-administrative tasks, such as browsing the web and reading email, are performed as an unprivileged user with minimal access rights.
Do not follow links provided by unknown or untrusted sources. Users should never visit sites of questionable integrity or follow links provided by unfamiliar or untrusted sources.
Set web browser security to disable the execution of script code or active content.
Disabling scripting and active content in the Internet Zone may limit exposure to this and other vulnerabilities.
Microsoft released an advisory and fixes to address this issue. Please see the references for more information.
Credits XSec is credited with the discovery of this vulnerability.
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from email@example.com
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.
Symantec, Symantec products, Symantec Security Response, and firstname.lastname@example.org
are registered trademarks of Symantec Corp. 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.