Re: [BUG] SECURITY DEFINER on call handler makes daemon crash

Robert Haas <robertmhaas@gmail.com>

From: Robert Haas <robertmhaas@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: KaiGai Kohei <kaigai@ak.jp.nec.com>, PostgreSQL-Hackers <pgsql-hackers@postgresql.org>
Date: 2010-03-20T02:17:41Z
Lists: pgsql-hackers
On Fri, Mar 19, 2010 at 8:11 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>> On Fri, Mar 19, 2010 at 8:18 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> KaiGai Kohei <kaigai@ak.jp.nec.com> writes:
>>>> When we assign "SECURITY DEFINER" attribute on plpgsql_call_handler(),
>>>> it makes server process crashed.
>>>
>>> So don't do that.  Whatever possessed you to think that's a sensible
>>> idea anyway?
>
>> It might not be sensible, but the whole server going down as a result
>> doesn't seem very sensible either.
>
> [ shrug... ]  If you would like to start enumerating the ways in which
> you can crash the server with erroneous pg_proc entries for C functions,
> go for it.  It'll keep you out of trouble for a very long time.

It's obviously not possible to make this bulletproof in general, but
that doesn't mean we should crash just for fun.

...Robert