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Category:   Application (Web Browser)  >   Microsoft Internet Explorer (IE) Vendors:   Microsoft
Microsoft Internet Explorer Browser Can Be Crashed By Certain Image Tags
SecurityTracker Alert ID:  1002919
SecurityTracker URL:  http://securitytracker.com/id/1002919
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Dec 7 2001
Impact:   Denial of service via network
Exploit Included:  Yes  

Description:   A denial of service vulnerability was reported in Microsoft's Internet Explorer (IE) browser. A certain image tag can cause the browser to consume nearly all CPU resources.

It is reported that a certain image tag containing some garbage characters in a particular order can cause the IE browser to consume nearly all available CPU resources or, in some cases, crash.

The following demonstration URLs are provided:

http://www.cgisecurity.com/crash.shtml
http://www.cgisecurity.com/crash2.shtml

The vendor has reportedly been notified.

Impact:   A remote user could create a web page or HTML-based e-mail message that would cause another user's browser to consume all CPU resources and/or crash when attempting to load the image.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.microsoft.com/technet/security/ (Links to External Site)
Cause:   Exception handling error
Underlying OS:   Windows (Me), Windows (NT), Windows (95), Windows (98), Windows (2000), Windows (XP)

Message History:   None.


 Source Message Contents

Date:  Tue, 4 Dec 2001 17:00:08 -0500 (EST)
Subject:  IE Denial of service (sorta)



Hey

I found this months ago and though it was patched but it managed to cause new errors
on win me with all updates on IE in kernel. On default win2k IE install it sucks up 100 percent cpu
for half on hour(128 meg of ram).

Please click on it and tell me what happens to you.
(include version and patch info)

Its a image tag with some garbage characters in a particular order.
I haven't bothered contacting microsoft yet because I'm not sure just how common a problem
this is, and with what patches installed.

www.cgisecurity.com/crash.shtml
also try /crash2.shtml

-zenomorph

 
 


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