On Fri, May 14, 2004 at 12:00:02PM +1000, Adam Goryachev wrote:
> b) Hopefully if the mailserver bounced the email, it didn't allow the
> original attachment to be included such that the receiver's mail program
> can access it. ie, you always get at least a section of the original

Well most MTAs besides Qmail do just that. They attach the original mail
message as a MIME attachment instead of just appending it (like Qmail does) -
which effectively "corrupts" the virus. (and if you recall, Q-S had to be
altered to catch such "corrupt" viruses - even though a user could never be
infected by them)

So the user would get a bounce mail message that says "qq failed", then
clicks on the .eml attachment - and gets infected...

-- 
Cheers

Jason Haar
Information Security Manager, Trimble Navigation Ltd.
Phone: +64 3 9635 377 Fax: +64 3 9635 417
PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1


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