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Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
29d0670519
By default, $PGUSER has permission to unlink $PGLOG. If $PGUSER replaces $PGLOG with a symbolic link, the server will corrupt the link-targeted file by appending log messages. Since these scripts open $PGLOG as root, the attack works regardless of target file ownership. "make install" does not install these scripts anywhere. Users having manually installed them in the past should repeat that process to acquire this fix. Most script users have $PGLOG writable to root only, located in $PGDATA. Just before updating one of these scripts, such users should rename $PGLOG to $PGLOG.old. The script will then recreate $PGLOG with proper ownership. Reviewed by Peter Eisentraut. Reported by Antoine Scemama. Security: CVE-2017-12172 |
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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/.