On Sun, 25 Aug 2002, Bruce Momjian wrote:
>
> OK, I understand your point. What do we need to do now that the
> announcement has already been made?
I'm still slightly confused here ... from what Neil/Gavin have stated so
far, all it sounds like is that if I pass a wrong date/time string, it
will crash the backend ... or is this what I'm missing?
>
> ---------------------------------------------------------------------------
>
> Gavin Sherry wrote:
> > On Sat, 24 Aug 2002, Bruce Momjian wrote:
> >
> > >
> > > The issue is data-provoked crashes vs. query-invoked crashes. Marc's
> > > point, and I think it was clear enough, is that you can't just poke at
> > > the TCP port and hope to do anything bad, which was the thrust of the
> > > argument, I think.
> >
> > Bruce,
> >
> > I am convinced that someone with enough time on their hands and some code
> > pointed to by Florian Weimer could exploit the datetime overrun issue by
> > crafting a datetime string in such a way as to overrun the buffer and
> > smash the stack.
> >
> > In applications which pass date/time data directly to the database without
> > any validation (is this datetime string greater than 52 bytes? does it
> > look like a date/time string?) then a malicious user without direct
> > database access could crash the database by taking advantage of the short
> > comings in Postgres and the application.
> >
> > As such, I would recommend all people who offer direct access to the
> > database and/or have applications which user date/time data
> > types/functionality to upgrade to 7.2.2.
> >
> > Gavin
> >
> >
> >
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>
> --
> Bruce Momjian | http://candle.pha.pa.us
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