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Since the temporary server started by "make check" uses "trust" authentication, another user on the same machine could connect to it as database superuser, and then potentially exploit the privileges of the operating-system user who started the tests. We should change the testing procedures to prevent this risk; but discussion is required about the best way to do that, as well as more testing than is practical for an undisclosed security problem. Besides, the same issue probably affects some user-written test harnesses. So for the moment, we'll just warn people against using "make check" when there are untrusted users on the same machine. In passing, remove some ancient advice that suggested making the regression testing subtree world-writable if you'd built as root. That looks dangerously insecure in modern contexts, and anyway we should not be encouraging people to build Postgres as root. Security: CVE-2014-0067
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.