05e1737351
While executing maintenance operations (ANALYZE, CLUSTER, REFRESH MATERIALIZED VIEW, REINDEX, or VACUUM), set search_path to 'pg_catalog, pg_temp' to prevent inconsistent behavior. Functions that are used for functional indexes, in index expressions, or in materialized views and depend on a different search path must be declared with CREATE FUNCTION ... SET search_path='...'. This change addresses a security risk introduced in commit 60684dd834, where a role with MAINTAIN privileges on a table may be able to escalate privileges to the table owner. That commit is not yet part of any release, so no need to backpatch. Discussion: https://postgr.es/m/e44327179e5c9015c8dda67351c04da552066017.camel%40j-davis.com Reviewed-by: Greg Stark Reviewed-by: Nathan Bossart
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/.