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
