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are shared with Tcl, since it's their code to begin with, and the patches have been copied from Tcl 8.5.0. Problems: CVE-2007-4769: Inadequate check on the range of backref numbers allows crash due to out-of-bounds read. CVE-2007-4772: Infinite loop in regex optimizer for pattern '($|^)*'. CVE-2007-6067: Very slow optimizer cleanup for regex with a large NFA representation, as well as crash if we encounter an out-of-memory condition during NFA construction. Part of the response to CVE-2007-6067 is to put a limit on the number of states in the NFA representation of a regex. This seems needed even though the within-the-code problems have been corrected, since otherwise the code could try to use very large amounts of memory for a suitably-crafted regex, leading to potential DOS by driving the system into swap, activating a kernel OOM killer, etc. Although there are certainly plenty of ways to drive the system into effective DOS with poorly-written SQL queries, these problems seem worth treating as security issues because many applications might accept regex search patterns from untrustworthy sources. Thanks to Will Drewry of Google for reporting these problems. Patches by Will Drewry and Tom Lane. Security: CVE-2007-4769, CVE-2007-4772, CVE-2007-6067 |
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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 including some of the more common listed below: C++ - http://thaiopensource.org/development/libpqxx/ JDBC - http://jdbc.postgresql.org ODBC - http://odbc.postgresql.org Perl - http://search.cpan.org/~dbdpg/ PHP - http://www.php.net Python - http://www.initd.org/ Ruby - http://ruby.scripting.ca/postgres/ Other language binding are available from a variety of contributing parties. PostgreSQL also has a great number of procedural languages available, a short, incomplete list is below: PL/pgSQL - included in PostgreSQL source distribution PL/Perl - included in PostgreSQL source distribution PL/PHP - http://projects.commandprompt.com/projects/public/plphp PL/Python - included in PostgreSQL source distribution PL/Java - http://pgfoundry.org/projects/pljava/ PL/Tcl - included in PostgreSQL source distribution 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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.