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Category:   Application (Web Browser)  >   Microsoft Internet Explorer Vendors:   Microsoft
Microsoft Internet Explorer 'ieframe.dll' Lets Remote Users Spoof Invalid Certificates
SecurityTracker Alert ID:  1017165
SecurityTracker URL:
CVE Reference:   CVE-2006-5805   (Links to External Site)
Updated:  Jun 3 2008
Original Entry Date:  Nov 7 2006
Impact:   Modification of system information
Exploit Included:  Yes  
Version(s): 7
Description:   A vulnerability was reported in Microsoft Internet Explorer. A remote user can cause a URL to appear to have an invalid certificate.

A remote user can exploit a weakness in the 'invalidcert.htm' page in 'ieframe.dll' to create a link that, when loaded by the target user, will cause the address bar to display an arbitrary URL while the browser declares that the URL has an invalid certificate (when, in fact, the displayed URL does not have an invalid certificate).

A demonstration exploit URL is provided:


The original advisory and a demonstration exploit is available at:

Inge Henriksen discovered this vulnerability.

Impact:   A remote user can create content that will cause the address bar to display an arbitrary URL while the browser declares that the URL has an invalid certificate.
Solution:   No solution was available at the time of this entry.
Vendor URL: (Links to External Site)
Cause:   State error
Underlying OS:  Windows (2003), Windows (XP)

Message History:   None.

 Source Message Contents

Subject:  IE7 website security certificate discrediting exploit

** Inge Henriksen Security Advisory - Full Disclosure Proof of Concept at **

Advisory Name: IE7 website security certificate discrediting exploit 
Tested and Confirmed Vulnerable: Microsoft(R) Internet Explorer(R) 7 
Severity: Low 
Type: Spoof 
>From where: Remote 
Discovered by: Inge Henriksen ( 
Vendor Status: Notified 

It is possible to create a link in Microsoft(R) Internet Explorer(R) 7 that discredits a websites security certificate. The bad design
 is in the ieframe.dll's embedded invalidecert.htm.

Full Disclosure Proof of Concept at


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