[ GLSA 200409-02 ] MySQL: Insecure temporary file creation in mysqlhotcopy
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Gentoo Linux Security Advisory GLSA 200409-02
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http://security.gentoo.org/
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Severity: Normal
Title: MySQL: Insecure temporary file creation in mysqlhotcopy
Date: September 01, 2004
Bugs: #60744
ID: 200409-02
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Synopsis
========
The mysqlhotcopy utility can create temporary files with predictable
paths, allowing an attacker to use a symlink to trick MySQL into
overwriting important data.
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 <= 4.0.20 >= 4.0.20-r1
Description
===========
Jeroen van Wolffelaar discovered that the MySQL database hot copy
utility (mysqlhotcopy.sh), when using the scp method, uses temporary
files with predictable names. A malicious local user with write access
to the /tmp directory could create a symbolic link pointing to a file,
which may then be overwritten. In cases where mysqlhotcopy is run as
root, a malicious user could create a symlink to a critical file such
as /etc/passwd and cause it to be overwritten.
Impact
======
A local attacker could use this vulnerability to destroy other users'
data or corrupt and destroy system files, possibly leading to a denial
of service condition.
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-4.0.20-r1"
# emerge ">=dev-db/mysql-4.0.20-r1"
References
==========
[ 1 ] CAN-2004-0457
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0457
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200409-02.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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