Re: A new TCP/IP blind data injection technique?

[Michal Zalewski <lcamtuf () ghettot org>]

On Sat, 13 Dec 2003, Michael Gale wrote:

> From your e-mail it looks like you need to send a fragmented packet in
> order to exploit this vulnerability. Most firewalls will NOT accept
> fragmented packets.

Neither is true.

Most firewalls accept fragmented packets (but do reassembly). You need to
send a fragment (not an entire packet), and to exploit the vulnerability,
it is perfectly fine for the packet to be reassembled by the recipient's
firewall - it does not have to go through as-is.

-- 
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 Michal Zalewski * [http://lcamtuf.coredump.cx]
    Did you know that clones never use mirrors?
--------------------------- 2003-12-13 22:11 --

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