Re: Is this a security oversight? - Mailing list pgsql-sql

From Ben Tilly
Subject Re: Is this a security oversight?
Date
Msg-id CANoac9Xh-Z9Sv3kF2fUm5c3wfGCmB2gZHDphr5ABzV++zPUGOw@mail.gmail.com
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In response to Re: Is this a security oversight?  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Is this a security oversight?
List pgsql-sql
Bizarre, I thought I had tested that by dropping superuser and trying it.  But I must not have.

In that case please modify this to a request to allow casts to be created by a superuser without having to change the ownership of the objects involved.

On Tue, Aug 10, 2021 at 11:32 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
Ben Tilly <btilly@gmail.com> writes:
> As a security rule, you cannot create a cast without owning one of the
> types.

Check.

> The following code successfully creates it, not as postgres and not as a
> superuser.

Really?  When I try that as an ordinary user, I get

ERROR:  must be owner of type boolean
CONTEXT:  SQL statement "ALTER TYPE bool OWNER TO current_user"
PL/pgSQL function inline_code_block line 12 at SQL statement

If there is a way where that actually does work without superuser
privileges, please send the details to security@postgresql.org.

                        regards, tom lane

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