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Previously invalidly encoded input to various escaping functions could lead to the escaped string getting incorrectly parsed by psql. To be safe, escaping functions need to ensure that neither invalid nor incomplete multi-byte characters can be used to "escape" from being quoted. Functions which can report errors now return an error in more cases than before. Functions that cannot report errors now replace invalid input bytes with a byte sequence that cannot be used to escape the quotes and that is guaranteed to error out when a query is sent to the server. The following functions are fixed by this commit: - PQescapeLiteral() - PQescapeIdentifier() - PQescapeString() - PQescapeStringConn() - fmtId() - appendStringLiteral() Reported-by: Stephen Fewer <stephen_fewer@rapid7.com> Reviewed-by: Noah Misch <noah@leadboat.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Backpatch-through: 13 Security: CVE-2025-1094 |
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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/.