AW: pushing exploits through the Firewall

["Julian Totzek" <julian.totzek () bristol de>]

> Hi group
> Say a pentester manages to discover a vulnerable version of BIND
running
> on
> an external DNS server and has successfully sourced an exploit for the
> vuln.
> I'm curious how it would be possible to launch the exploit against the
> server when a packet filtering device and stateful inspection Firewall
sit
> between the pentester and the vuln host. It would seem at first glance
> that
> this is not a viable option. How else might one go about exploiting
the
> vuln?
Hi Mike,

remember, a firewall is mostly controlling the entrance but not the
application itself. So if there is a exploit running on port UDP 53 the
firewall will let it pass, cause it only knows port 53 UDP is legitimate
traffic.

Sometimes there are some kind of filter enabled in firewalls which will
block these exploits, but normally there is nothing ;-)

So just go for it and try it :-)

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