funsec mailing list archives

Re: Overloading AV software, was Question about Viruses


From: Valdis.Kletnieks () vt edu
Date: Fri, 07 Jul 2006 17:18:23 -0400

On Fri, 07 Jul 2006 16:55:15 EDT, Dude VanWinkle said:

The zip-bomb?

I seem to remember McAffe or Symantec doing that

No, the zip bombs were zips that unpacked into gigabytes of trash and
blew out the storage.  This was something structured like:

multipart/mixed
  multipart/mixed
    multipart/mixed
(.....)
         application/zip-worm

So it would look at the mime, unpack the multipart to scan the parts, then it
would have to unpack the inner multipart to scan its contents, then the *inner*
inner multipart, and so on...

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