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Re: Cert Advisory 2002-03 and HP JetDirect
From: "david evlis reign" <davidreign () hotmail com>
Date: Fri, 22 Feb 2002 10:14:20 +0000

As an interesting side note, Ethereal (a popular open source sniffer /
traffic analyzer) crashes every time it sees this packet also. It gives the
error "GLib-ERROR **: could not allocate -1 bytes aborting...".

this caught my attention for two reasons.
my probably wrong explantion for this is the following:
1) mangled packet sent, containing some large values (no idea what)
2) ettercap recieves and processes this saying that int whatever = <large value from packet>
3) int returns unsigned, classic integer overflow style.
4) passed to malloc as an unsigned value, malloc shits itself.
5) ettercap spits out cant allocate <whatever> bytes.

possibly exploitable (heap + int == hard ;))

someone prove me wrong _please_
davidr







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