Michael Paquier
d93ef41317
This commit applies timingsafe_bcmp() to authentication paths that handle attributes or data previously compared with memcpy() or strcmp(), which are sensitive to timing attacks. The following data is concerned by this change, some being in the backend and some in the frontend: - For a SCRAM or MD5 password, the computed key or the MD5 hash compared with a password during a plain authentication. - For a SCRAM exchange, the stored key, the client's final nonce and the server nonce. - RADIUS (up to v18), the encrypted password. - For MD5 authentication, the MD5(MD5()) hash. Reported-by: Joe Conway <mail@joeconway.com> Security: CVE-2026-6478 Author: Michael Paquier <michael@paquier.xyz> Reviewed-by: John Naylor <johncnaylorls@gmail.com> Backpatch-through: 14
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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/18/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/18/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.