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Previously, a CREATEROLE user without SUPERUSER could not alter REPLICATION users in any way, and could not set the BYPASSRLS attribute. However, they could manipulate the CREATEDB property even if they themselves did not possess it. With this change, a CREATEROLE user without SUPERUSER can set or clear the REPLICATION, BYPASSRLS, or CREATEDB property on a new role or a role that they have rights to manage if and only if that property is set for their own role. This implements the standard idea that you can't give permissions you don't have (but you can give the ones you do have). We might in the future want to provide more powerful ways to constrain what a CREATEROLE user can do - for example, to limit whether CONNECTION LIMIT can be set or the values to which it can be set - but that is left as future work. Patch by me, reviewed by Nathan Bossart, Tushar Ahuja, and Neha Sharma. Discussion: http://postgr.es/m/CA+TgmobX=LHg_J5aT=0pi9gJy=JdtrUVGAu0zhr-i5v5nNbJDg@mail.gmail.com |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.