Dear MySQL users,
MySQL Community Server 5.0.91, a new version of the popular Open Source
Database Management System, has been released.
Please note that the active maintenance of 5.0 has ended,and these
community builds are only provided because of the fixes to security bugs
# 50974, 53237, and 53371 as described below.
The release is now available in source and binary form for a number of
platforms from our archive download page at
Mirror service for MySQL server 5.0 has ended.
Also, support for some platforms with very low demand has ended.
Please bear in mind that MySQL 5.0 now receives extended support only,
and that all active development is happening on MySQL 5.1, 5.5, and
beyond. You will find the MySQL Lifecycle policy here:
For your own best interest, we strongly recommend all current users of
MySQL 5.0 to upgrade to either MySQL 5.1 (current production release) or
MySQL 5.5 (pre-production release, adding new features in beta quality).
We welcome and appreciate your feedback, bug reports, bug fixes,
This section documents all changes and bugfixes that have been
applied since the last MySQL Community Server release (5.0.90).
If you would like to receive more fine-grained and personalized
update alerts about fixes that are relevant to the version and
features you use, please consider subscribing to MySQL Enterprise
(a commercial MySQL offering). For more details please see
On behalf of the MySQL Build Team,
Changes in MySQL 5.0.91 (05 May 2010)
* Security Fix: The server failed to check the table name
argument of a COM_FIELD_LIST command packet for validity
and compliance to acceptable table name standards. This
could be exploited to bypass almost all forms of checks
for privileges and table-level grants by providing a
specially crafted table name argument to COM_FIELD_LIST.
In MySQL 5.0 and above, this allowed an authenticated
user with SELECT privileges on one table to obtain the
field definitions of any table in all other databases and
potentially of other MySQL instances accessible from the
server's file system.
Additionally, for MySQL version 5.1 and above, an
authenticated user with DELETE or SELECT privileges on
one table could delete or read content from any other
table in all databases on this server, and potentially of
other MySQL instances accessible from the server's file
* Security Fix: The server was susceptible to a
buffer-overflow attack due to a failure to perform bounds
checking on the table name argument of a COM_FIELD_LIST
command packet. By sending long data for the table name,
a buffer is overflown, which could be exploited by an
authenticated user to inject malicious code.
* Security Fix: The server could be tricked into reading
packets indefinitely if it received a packet larger than
the maximum size of one packet.
* The optimizer could attempt to evaluate the WHERE clause
before any rows had been read, resulting in a server
* On Windows, LOAD_FILE() could cause a crash for some
* Use of HANDLER statements with tables that had spatial
indexes caused a server crash.
* With an XA transaction active, SET autocommit = 1 could
cause side effects such as memory corruption or a server
* The SSL certificates in the test suite were about to
expire. They have been updated with expiration dates in
the year 2015.
* For debug builds, an assertion was incorrectly raised in
the optimizer when matching ORDER BY expressions.
* The filesort sorting method applied to a CHAR(0) column
could lead to a server crash.
* sql_buffer_result had an effect on non-SELECT statements,
contrary to the documentation.
* EXPLAIN EXTENDED crashed trying to print column names for
a subquery in the FROM clause when the table had gone out
* mysql-test-run.pl now recognizes the
MTR_SHUTDOWN_TIMEOUT, and MTR_START_TIMEOUT environment
variables. If they are set, their values are used to set
the --testcase-timeout, --suite-timeout,
--shutdown-timeout, and --start-timeout options,
* Certain INTERVAL expressions could cause a crash on
* The server crashed when it could not determine the best
execution plan for queries involving outer joins with
nondeterministic ON clauses such as the ones containing
the RAND() function, a user-defined function, or a NOT
DETERMINISTIC stored function.
* If an outer query was invalid, a subquery might not even
be set up. EXPLAIN EXTENDED did not expect this and
caused a crash by trying to dereference improperly set up
Joerg Bruehe, MySQL Build Team, Joerg.Bruehe@stripped
Sun Microsystems GmbH, Komturstrasse 18a, D-12099 Berlin
Geschaeftsfuehrer: Juergen Kunz
Amtsgericht Muenchen: HRB161028
|• MySQL Server 5.0.91 has been released||Joerg Bruehe||21 May|