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Commit 3eefc51053f250837c3115c12f8119d16881a2d7 claimed to make pg_user_mappings enforce the qualifications user_mapping_options had been enforcing, but its removal of a longstanding restriction left them distinct when the current user is the subject of a mapping yet has no server privileges. user_mapping_options emits no rows for such a mapping, but pg_user_mappings includes full umoptions. Change pg_user_mappings to show null for umoptions. Back-patch to 9.2, like the above commit. Reviewed by Tom Lane. Reported by Jeff Janes. Security: CVE-2017-7547
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/.