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31cf1a1a43
The existing renegotiation code was home for several bugs: it might erroneously report that renegotiation had failed; it might try to execute another renegotiation while the previous one was pending; it failed to terminate the connection if the renegotiation never actually took place; if a renegotiation was started, the byte count was reset, even if the renegotiation wasn't completed (this isn't good from a security perspective because it means continuing to use a session that should be considered compromised due to volume of data transferred.) The new code is structured to avoid these pitfalls: renegotiation is started a little earlier than the limit has expired; the handshake sequence is retried until it has actually returned successfully, and no more than that, but if it fails too many times, the connection is closed. The byte count is reset only when the renegotiation has succeeded, and if the renegotiation byte count limit expires, the connection is terminated. This commit only touches the master branch, because some of the changes are controversial. If everything goes well, a back-patch might be considered. Per discussion started by message 20130710212017.GB4941@eldon.alvh.no-ip.org |
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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: 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. 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/.