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Presently, the privilege check for SET SESSION AUTHORIZATION checks whether the original authenticated role was a superuser at connection start time. Even if the role loses the superuser attribute, its existing sessions are permitted to change session authorization to any role. This commit modifies this privilege check to verify the original authenticated role currently has superuser. In the event that the authenticated role loses superuser within a session authorization change, the authorization change will remain in effect, which means the user can still take advantage of the target role's privileges. However, [RE]SET SESSION AUTHORIZATION will only permit switching to the original authenticated role. Author: Joseph Koshakow Discussion: https://postgr.es/m/CAAvxfHc-HHzONQ2oXdvhFF9ayRnidPwK%2BfVBhRzaBWYYLVQL-g%40mail.gmail.com |
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| README.git | ||
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/.