Обсуждение: New to PostgreSQL, is this a DoS?
Pardon the message, I received no responses in the other pgsql lists I posted this too. I'm using a fully updated RedHat 5.1 box flex version 2.5.4 GNU Bison version 1.25 ---------- Forwarded message ---------- Date: Sun, 15 Nov 1998 22:24:58 -0700 (MST) From: Dax Kelson <dkelson-list-pgsql-admin@inconnect.com> To: pgsql-admin@postgreSQL.org Subject: [ADMIN] New to PostgreSQL, is this a DoS? I compiled and install 6.4 according to the INSTALL doc. I created a database with "createdb test", running as user "postgres", I connected "psql template1" and ran: CREATE USER billybob WITH PASSWORD hehe CREATEDB CREATEUSER; I then modified pg_hba.conf by adding: host all 10.0.0.2 255.255.255.255 crypt I then killed and restarted postmaster with "-i". >>From the remote machine "10.0.0.2" I connected to the database "test" as user "billybob" and that worked. However, I had problems trying to create a table. >>From that remote machine, I ran: CREATE TABLE weather ( city varchar(80), temp_lo int, temp_hi int, prcp real, date date ); And it supposedly "worked", it said "CREATE". However, running \d returned Couldn't find any tables, sequences or indices! Then from the machine actually running PostgreSQL, as user "postgres" I connected to "test" \d returned Couldn't find any tables, sequences or indices! So I tried running the CREATE TABLE weather command again, but it returned: ERROR: weather relation already exists but, \d returned Couldn't find any tables, sequences or indices! >>From remotely as "billybob" or localy as "postgres" I could succesfully drop this phantom table. Is this a denial of service? A remote user can connect and create as many phantom tables as they want which could possibly interfere with normal operation? How would the admin even know the name of the table to drop? If I connect locally as user "postgres" and I can successfully create and see the table. Is it normal behaviour that user "postgres" must first create the tables for them to be useable? Thanks, Dax Kelson Internet Connect, Inc.
dkelson-list-pgsql-hackers@inconnect.com wrote: > > Pardon the message, I received no responses in the other pgsql lists I > posted this too. > > I'm using a fully updated RedHat 5.1 box > > flex version 2.5.4 > GNU Bison version 1.25 > > ---------- Forwarded message ---------- > Date: Sun, 15 Nov 1998 22:24:58 -0700 (MST) > From: Dax Kelson <dkelson-list-pgsql-admin@inconnect.com> > To: pgsql-admin@postgreSQL.org > Subject: [ADMIN] New to PostgreSQL, is this a DoS? > > I compiled and install 6.4 according to the INSTALL doc. Did you do initdb ? running the new postgres over old 6.3 database could possibly explain the strange behaviour you see > I created a database with "createdb test", > > running as user "postgres", I connected "psql template1" and ran: > > CREATE USER billybob WITH PASSWORD hehe CREATEDB CREATEUSER; Hannu
On Mon, 16 Nov 1998 dkelson-list-pgsql-hackers@inconnect.com wrote:
> I compiled and install 6.4 according to the INSTALL doc.
>
> I created a database with "createdb test",
>
> running as user "postgres", I connected "psql template1" and ran:
>
> CREATE USER billybob WITH PASSWORD hehe CREATEDB CREATEUSER;
Still being half asleep and just guessing (withoug looking it up), does
the CREATEDB CREATEUSER also imply SELECT privileges? IOW, you may
wanna try GRANT.
Vince.
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Vince Vielhaber -- KA8CSH email: vev@michvhf.com flame-mail: /dev/null # include <std/disclaimers.h>
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On Tue, 17 Nov 1998, Vince Vielhaber wrote: > On Mon, 16 Nov 1998 dkelson-list-pgsql-hackers@inconnect.com wrote: > > > I compiled and install 6.4 according to the INSTALL doc. > > > > I created a database with "createdb test", > > > > running as user "postgres", I connected "psql template1" and ran: > > > > CREATE USER billybob WITH PASSWORD hehe CREATEDB CREATEUSER; > > Still being half asleep and just guessing (withoug looking it up), does > the CREATEDB CREATEUSER also imply SELECT privileges? IOW, you may > wanna try GRANT. >From what I've read, you can't GRANT on a database, it has be a on an object within a database. It seems it is the chicken and the egg problem.
On Tue, 17 Nov 1998 dkelson-list-pgsql-hackers@inconnect.com wrote:
> On Tue, 17 Nov 1998, Vince Vielhaber wrote:
>
> > On Mon, 16 Nov 1998 dkelson-list-pgsql-hackers@inconnect.com wrote:
> >
> > > I compiled and install 6.4 according to the INSTALL doc.
> > >
> > > I created a database with "createdb test",
> > >
> > > running as user "postgres", I connected "psql template1" and ran:
> > >
> > > CREATE USER billybob WITH PASSWORD hehe CREATEDB CREATEUSER;
> >
> > Still being half asleep and just guessing (withoug looking it up), does
> > the CREATEDB CREATEUSER also imply SELECT privileges? IOW, you may
> > wanna try GRANT.
>
> >From what I've read, you can't GRANT on a database, it has be a on an
> object within a database.
>
> It seems it is the chicken and the egg problem.
GRANT ALL TO billybob
That's a GRANT for command permissions which is different from the GRANT
for object permissions that you're thinking of. Sybase supports the
above command I gave, I don't know if PostgreSQL does.
Vince.
--
==========================================================================
Vince Vielhaber -- KA8CSH email: vev@michvhf.com flame-mail: /dev/null # include <std/disclaimers.h>
TEAM-OS2 Online Searchable Campground Listings http://www.camping-usa.com "There is no outfit less
entitledto lecture me about bloat than the federal government" -- Tony Snow
==========================================================================