MySQL: Multiple vulnerabilities
Gentoo Linux Security Advisory
||GLSA 200410-22 / MySQL
||October 24, 2004
||October 24, 2004: 01
All supported architectures
Several vulnerabilities including privilege abuse, Denial of Service, and
potentially remote arbitrary code execution have been discovered in MySQL.
MySQL is a popular open-source, multi-threaded, multi-user SQL database
The following vulnerabilities were found and fixed in MySQL:
Oleksandr Byelkin found that ALTER TABLE ... RENAME checks CREATE/INSERT
rights of the old table instead of the new one (CAN-2004-0835). Another
privilege checking bug allowed users to grant rights on a database they had
no rights on.
Dean Ellis found a defect where multiple threads ALTERing the MERGE tables
to change the UNION could cause the server to crash (CAN-2004-0837).
Another crash was found in MATCH ... AGAINST() queries with missing closing
Finally, a buffer overrun in the mysql_real_connect function was found by
Lukasz Wojtow (CAN-2004-0836).
The privilege checking issues could be used by remote users to bypass their
rights on databases. The two crashes issues could be exploited by a remote
user to perform a Denial of Service attack on MySQL server. The buffer
overrun issue could also be exploited as a Denial of Service attack, and
may allow to execute arbitrary code with the rights of the MySQL daemon
(typically, the "mysql" user).
There is no known workaround at this time.
All MySQL users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge sync
# emerge -pv ">=dev-db/mysql-4.0.21"
# emerge ">=dev-db/mysql-4.0.21"