GLSA 200410-22: MySQL: Multiple vulnerabilities
Posted on: 10/24/2004 04:26 PM

A MySQL security update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200410-22
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http://security.gentoo.org/
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Severity: High
Title: MySQL: Multiple vulnerabilities
Date: October 24, 2004
Bugs: #67062
ID: 200410-22

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Synopsis
=======

Several vulnerabilities including privilege abuse, Denial of Service, and potentially remote arbitrary code execution have been discovered in MySQL.

Background
=========

MySQL is a popular open-source, multi-threaded, multi-user SQL database server.

Affected packages
================

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Package / Vulnerable / Unaffected
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1 dev-db/mysql < 4.0.21 >= 4.0.21

Description
==========

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 double quote.

Finally, a buffer overrun in the mysql_real_connect function was found by Lukasz Wojtow (CAN-2004-0836).

Impact
=====

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).

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All MySQL users should upgrade to the latest version:

# emerge sync

# emerge -pv ">=dev-db/mysql-4.0.21"
# emerge ">=dev-db/mysql-4.0.21"

References
=========

[ 1 ] CAN-2004-0835
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0835
[ 2 ] CAN-2004-0836
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0836
[ 3 ] CAN-2004-0837
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0837
[ 4 ] Privilege granting bug
http://bugs.mysql.com/bug.php?id=3933
[ 5 ] MATCH ... AGAINST crash bug
http://bugs.mysql.com/bug.php?id=3870

Availability
===========

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200410-22.xml

Concerns?
========

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.

License
======

Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0


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