Synopsis:	Moderate: mysql security update
Issue date:	2010-02-16
CVE Names:	CVE-2009-4019 CVE-2009-4028 CVE-2009-4030

CVE-2009-4019 mysql: DoS (crash) when comparing GIS items from subquery 
and when handling subqueires in WHERE  and assigning a SELECT result to 
a @variable
CVE-2009-4028 mysql: client SSL certificate verification flaw
CVE-2009-4030 mysql: Incomplete fix for CVE-2008-2079 / CVE-2008-4098

It was discovered that the MySQL client ignored certain SSL certificate
verification errors when connecting to servers. A man-in-the-middle
attacker could use this flaw to trick MySQL clients into connecting to a
spoofed MySQL server. (CVE-2009-4028)

Note: This fix may uncover previously hidden SSL configuration issues, 
such as incorrect CA certificates being used by clients or expired 
server certificates. This update should be carefully tested in 
deployments where SSL connections are used.

A flaw was found in the way MySQL handled SELECT statements with 
subqueries in the WHERE clause, that assigned results to a user 
variable. A remote, authenticated attacker could use this flaw to crash 
the MySQL server daemon (mysqld). This issue only caused a temporary 
denial of service, as the MySQL daemon was automatically restarted after 
the crash. (CVE-2009-4019)

When the "datadir" option was configured with a relative path, MySQL did
not properly check paths used as arguments for the DATA DIRECTORY and 
INDEX DIRECTORY directives. An authenticated attacker could use this 
flaw to bypass the restriction preventing the use of subdirectories of 
the MySQL data directory being used as DATA DIRECTORY and INDEX 
DIRECTORY paths. (CVE-2009-4030)

Note: Due to the security risks and previous security issues related to 
the use of the DATA DIRECTORY and INDEX DIRECTORY directives, users not
depending on this feature should consider disabling it by adding 
"symbolic-links=0" to the "[mysqld]" section of the "my.cnf" 
configuration file. In this update, an example of such a configuration 
was added to the default "my.cnf" file.

After installing this update, the MySQL server daemon (mysqld) will be 
restarted automatically.

SL 5.x

     SRPMS:
mysql-5.0.77-4.el5_4.2.src.rpm
     i386:
mysql-5.0.77-4.el5_4.2.i386.rpm
mysql-bench-5.0.77-4.el5_4.2.i386.rpm
mysql-devel-5.0.77-4.el5_4.2.i386.rpm
mysql-server-5.0.77-4.el5_4.2.i386.rpm
mysql-test-5.0.77-4.el5_4.2.i386.rpm
     x86_64:
mysql-5.0.77-4.el5_4.2.i386.rpm
mysql-5.0.77-4.el5_4.2.x86_64.rpm
mysql-bench-5.0.77-4.el5_4.2.x86_64.rpm
mysql-devel-5.0.77-4.el5_4.2.i386.rpm
mysql-devel-5.0.77-4.el5_4.2.x86_64.rpm
mysql-server-5.0.77-4.el5_4.2.x86_64.rpm
mysql-test-5.0.77-4.el5_4.2.x86_64.rpm

-Connie Sieh
-Troy Dawson