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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
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
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@xxxxxxxxxx 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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