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The catalog view pg_stats_ext fails to consider privileges for expression statistics. The catalog view pg_stats_ext_exprs fails to consider privileges and row-level security policies. To fix, restrict the data in these views to table owners or roles that inherit privileges of the table owner. It may be possible to apply less restrictive privilege checks in some cases, but that is left as a future exercise. Furthermore, for pg_stats_ext_exprs, do not return data for tables with row-level security enabled, as is already done for pg_stats_ext. On the back-branches, a fix-CVE-2024-4317.sql script is provided that will install into the "share" directory. This file can be used to apply the fix to existing clusters. Bumps catversion on 'master' branch only. Reported-by: Lukas Fittl Reviewed-by: Noah Misch, Tomas Vondra, Tom Lane Security: CVE-2024-4317 Backpatch-through: 14
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/.