Hi Florian,
Am I understanding this right:
- A PostgreSQL 7.2.1 server can be crashed if it gets passed certain
date values which would be accepted by standard "front end" parsing?
So, a web application layer can request a date from a user, do standard
integrity checks (like looking for weird characters and formatting
hacks) on the date given, then use the date as part of a SQL query, and
PostgreSQL will die?
?
Regards and best wishes,
Justin Clift
Florian Weimer wrote:
>
> Justin Clift <justin@postgresql.org> writes:
>
> > Is it possible to crash a 7.2.1 backend without having an entry in the
> > pg_hba.conf file?
>
> No, but think of web applications and things like that. The web
> frontend might pass in a date string which crashes the server backend.
> Since the crash can be triggered by mere data, an attacker does not
> have to be able to send specific SQL statements to the server.
>
> --
> Florian Weimer Weimer@CERT.Uni-Stuttgart.DE
> University of Stuttgart http://CERT.Uni-Stuttgart.DE/people/fw/
> RUS-CERT fax +49-711-685-5898
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