[ GLSA 200410-22 ] MySQL: Multiple vulnerabilities

[Thierry Carrez <koon () gentoo org>]

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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 () 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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