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Home » Hacking News » CLA-2002:455: MySQL log file with world-readable permissions

CLA-2002:455: MySQL log file with world-readable permissions

by Nikola Strahija on January 20th, 2002 The package shipped with Conectiva Linux 6.0 and older logs by default all queries made to the database to the /var/log/mysql file. This includes user creation, password changes via SQL commands and other queries. Our package incorrectly leaves the permissions of this file as world-readable (0644), thus allowing any user on the system access to potentially sensitive information.


PACKAGE : MySQL
SUMMARY : MySQL log file with world-readable permissions
DATE : 2002-01-18 16:14:00
ID : CLA-2002:455
RELEVANT
RELEASES : 5.0, 5.1, 6.0

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DESCRIPTION
MySQL is a very popular SQL database which is shipped by many linux
distributions.

The package shipped with Conectiva Linux 6.0 and older logs by
default all queries made to the database to the /var/log/mysql file.
This includes user creation, password changes via SQL commands and
other queries. Our package incorrectly leaves the permissions of this
file as world-readable (0644), thus allowing any user on the system
access to potentially sensitive information.

We believe this vulnerability[1,4] to be exclusive to our
distribution of this package.

Additionally, a few other problems[2,3] are also fixed in this
update. Specifically:
- logrotate now correctly restarts the server and rotates the logs.
Previous packages failed to do that and the log file would just keep
growing.
- logging is now configurable via the /etc/sysconfig/mysql file. The
default still has logging enabled, though.


SOLUTION
We recommend that all MySQL users upgrade their packages.

If an upgrade cannot be made at this time, please change the
permissions of the log file manually:

chmod 600 /var/log/mysql*
chown mysql.mysql /var/log/mysql*


REFERENCES
1. http://distro.conectiva.com.br/bugzilla/show_bug.cgi?id=4201
2. http://distro.conectiva.com.br/bugzilla/show_bug.cgi?id=4220
3. http://distro.conectiva.com.br/bugzilla/show_bug.cgi?id=3674
4.
http://distro.conectiva.com.br/pipermail/seguranca/2001-August/001870.html


DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/MySQL-3.23.36-14U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/MySQL-3.23.36-14U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/MySQL-3.23.36-14U51_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/MySQL-3.23.36-14U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/MySQL-3.23.36-14U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/MySQL-3.23.36-14U60_1cl.i386.rpm


ADDITIONAL INSTRUCTIONS
Users of Conectiva Linux version 6.0 or higher may use apt to perform
upgrades of RPM packages:
- add the following line to /etc/apt/sources.list if it is not there yet
(you may also use linuxconf to do this):

rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates

(replace 6.0 with the correct version number if you are not running CL6.0)

- run: apt-get update
- after that, execute: apt-get upgrade

Users of Conectiva Linux version 6.0 or higher may use apt to perform
upgrades of RPM packages:
- add the following line to /etc/apt/sources.list if it is not there yet
(you may also use linuxconf to do this):

rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates

(replace 6.0 with the correct version number if you are not running CL6.0)

- run: apt-get update
- after that, execute: apt-get upgrade

Detailed instructions reagarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en


- -------------------------------------------------------------------------
All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en
- -------------------------------------------------------------------------
All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en


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