Update Available for the "Frame Domain Verification" Issue (251108)


The information in this article applies to:

  • Microsoft Internet Explorer 5.01 for Windows NT 4.0
  • Microsoft Internet Explorer 5.0 for Windows NT 4.0
  • Microsoft Internet Explorer 4.01 for Windows NT 4.0 SP 1
  • Microsoft Internet Explorer 4.01 for Windows NT 4.0 SP 2
  • Microsoft Internet Explorer 4.0 for Windows NT 4.0
  • Microsoft Internet Explorer 5.01 for Windows 98 Second Edition
  • Microsoft Internet Explorer 5.01 for Windows 98
  • Microsoft Internet Explorer 5.0 for Windows 98
  • Microsoft Internet Explorer 4.01 for Windows 98 SP 2
  • Microsoft Internet Explorer 5.01 for Windows 95
  • Microsoft Internet Explorer 5.0 for Windows 95
  • Microsoft Internet Explorer 4.01 for Windows 95 SP 1
  • Microsoft Internet Explorer 4.01 for Windows 95 SP 2
This article was previously published under Q251108

On March 6, 2001 Microsoft released information regarding a new variant of this vulnerability. For information on the variant and where to download the patch, see the following Microsoft Web site:

http://www.microsoft.com/technet/security/bulletin/MS01-015.mspx

SUMMARY

Microsoft has released an update to Internet Explorer that addresses a potential security issue where a malicious web site operator could view files on the computer of a visiting user. The web site operator would need to know (or guess) the name and location of the file, and could only view file types that can be opened in a browser window.

Additional information about this issue is available from the following Microsoft Web site:

http://www.microsoft.com/technet/security/bulletin/ms00-033.mspx

For additional information about the latest service pack for Internet Explorer 5.01, click the article number below to view the article in the Microsoft Knowledge Base:

267954 How to Obtain the Latest Internet Explorer 5.01 Service Pack

MORE INFORMATION

When a web server opens a frame within a window, the Internet Explorer security model should only allow the parent window to access the data in the frame if they are in the same domain. However, two functions available in Internet Explorer do not properly perform domain checking, with the result that the parent window could open a frame that contains a file on the local computer, then read it. This could allow a malicious web site operator to view files on the computer of a visiting user.

For additional information about resolving this problem, click the article number below to view the article in the Microsoft Knowledge Base:

262509 Patch Available for "Frame Domain Verification", "Unauthorized Cookie Access", "Malformed Component Attribute", and "WPAD Spoofing" Vulnerabilities

Modification Type:MajorLast Reviewed:6/15/2004
Keywords:kbbug kbie501sp1Fix KB251108
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