full-disclosure - Evidence of a ISC being hacked?

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Message-ID: <200406241938.i5OJcRV5031778@turing-police.cc.vt.edu>
From: Valdis.Kletnieks at vt.edu (Valdis.Kletnieks@...edu)
Subject: Evidence of a ISC being hacked? 

On Thu, 24 Jun 2004 11:22:18 PDT, VX Dude said:

> Good point, personally I wouldn't think that making a
> small wrapper would take that long, but then again I
> havent done it, and I havent done it under stress and
> a time crunch.  I code for fun and not profit which is
> pretty stress free.

Writing a small wrapper doesn't do anything any better than
just using a #define - the *basic* problem is that there's no way
for any wrapper or preprocessor magic to know the "right" answer
to the most crucial difference - vsnprintf takes a 'length' parameter,
and you have 2 basic choices:

1) The wrapper/define/handwaving discards it and prays.

2) The replacement function does a proper job of doing a full enough
emulation of vsnprintf to keep track of "length so far" and stop
when it gets full (not as easy as you might think - for fun, compute
how many bytes this takes:

   vsprintf(target,"%#'LG",foo);

(Note the evilness involved in the ' flag, which is locale-dependent ;)

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