1. Symantec/
  2. Security Response/
  3. Microsoft Internet Explorer XML Object Zone Restriction Bypass Vulnerability

Microsoft Internet Explorer XML Object Zone Restriction Bypass Vulnerability



Date Discovered

November 11, 2003


Microsoft has announced that a vulnerability exists in Internet Explorer when handling malicious XML objects. The problem is said to occur due to Internet Explorer failing to validate a supplied path when binding local data to the XML document. As a result, a malicious HTML containing an embedded XML objects may be capable of exposing the contents of the local filesystem, despite the object being within the Internet or Intranet zone.

Technologies Affected

  • Microsoft Internet Explorer 5.0.1
  • Microsoft Internet Explorer 5.0.1 SP1
  • Microsoft Internet Explorer 5.0.1 SP2
  • Microsoft Internet Explorer 5.0.1 SP3
  • Microsoft Internet Explorer 5.0.1 Sp1
  • Microsoft Internet Explorer 5.0.1 Sp2
  • Microsoft Internet Explorer 5.0.1 Sp3
  • Microsoft Internet Explorer 5.5
  • Microsoft Internet Explorer 5.5 SP1
  • Microsoft Internet Explorer 5.5 SP2
  • Microsoft Internet Explorer 6.0
  • Microsoft Internet Explorer 6.0 SP1


Run all software as a nonprivileged user with minimal access rights.

Running Internet Explorer with least privileges possible may help mitigate the impact of successful exploitation of this vulnerability.

Set web browser security to disable the execution of script code or active content.

Disabling script code or active content functionality in Internet Explorer may help prevent potential attacks.
Microsoft has released fixes for this issue:


Discovery credited to jelmer .
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 secure@symantec.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 secure@symantec.com 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.

Threat Intelligence

Follow the Threat Intelligence Twitter feed
STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
  • Twitter
  • Facebook
  • LinkedIn
  • Google+
  • YouTube