Risks
Vulnerabilities
Browse by
Self-Executing HTML in Internet Explorer 5.5 and 6.0
04 June 2002
Bookmark and Share
The following file is an html file comprising both scripting and a complied help file [*.chm].

We inject scripting into the actual help file which is designed to point back to the html file and execute it. Provided the html file name contains the 'word' chm in it, Internet Explorer 5.5 and 6.0 executes it.

Because it is an html file proper, Internet Explorer opens it. The scripting inside is then parsed and fired. That scripting is pointing back to the same file with a showHelp call and because that is precisely what it is, it executes !

Tested on win98 IE5.5 and IE6. Constructed for win98:

[harmless *.exe - requires positioning of Mshta.exe @ C:\WINDOWS\SYSTEM]

http://www.malware.com/html.zip

Be aware of html files out there.

End Call
--
http://www.malware.com


Spotlight

People will do anything for free Wi-Fi

Posted on 30 September 2014.  |  A new Wi-Fi investigation conducted on the streets of London shows that consumers carelessly use public Wi-Fi without regard for their personal privacy.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  

DON'T
MISS

Wed, Oct 1st
    COPYRIGHT 1998-2014 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //