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Re: iDefense Security Advisory 10.09.07: Microsoft Windows Mail and Outlook Express NNTP Protocol Heap Overflow
From: Nick FitzGerald <nick () virus-l demon co uk>
Date: Wed, 10 Oct 2007 21:15:57 +1300

iDefense Labs wrote:

<<...>>
V. WORKAROUND

Deleting the all sub-keys of the following registry keys will remove the
'news' and 'snews' protocol handlers:

  HKEY_CLASSES_ROOT\news\shell
  HKEY_CLASSES_ROOT\snews\shell

If you want to do a thorough job of such mitigation as a Q&D fix, you 
may also need to nuke the 

   HKEY_CLASSES_ROOT\nntp\shell

entry.

I can't easily test the viability of exploiting this via an nntp:// URI 
just now, but "nntp" is normally registered (at least with OE -- can 
someone check for Windows Mail?) with exactly the same sub-keys and 
values as the "news" and "snews" URI handlers...


Regards,

Nick FitzGerald


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