[UNIX] MySQL Insecure Temporary File Handling

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  MySQL Insecure Temporary File Handling
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SUMMARY

"The  <http://www.mysql.com> MySQL database server is the world's most 
popular open source database."

MySQL handle temporary files in an unsafe way while creating new database, 
allowing a malicious attacker to inject arbitrary SQL commands.

DETAILS

Vulnerable Systems:
 * MySQL versions 4.0.11 and prior
 * MySQL versions 5.0.4 and prior

Immune Systems:
 * MySQL version 4.0.12

MySQL contain a security flaw that could allow a malicious local attacker 
to inject arbitrary SQL commands during database creation process.

For example:
A malicious local attacker could create an mysql account accessible from 
local (or everywhere) with ALL privileges on all databases.

Example:
tmp_file=/tmp/mysql_install_db.$$

Then on:
226> echo "use mysql;" > $tmp_file
227> cat $tmp_file $fill_help_tables | eval "$mysqld_install_cmd_line"
228> res=$?
229> rm $tmp_file

Patch Availability:
MySQL versions 5.* is still vulnerable.

Disclosure Timeline:
07.05.05 - Vulnerability discovered
09.05.05 - Vendor notified
09.05.05 - Vendor response
17.05.05 - Vendor published fix
17.05.05 - Disclosure


ADDITIONAL INFORMATION

The information has been provided by  <mailto:[email protected]> 
ZATAZ.net.
The original article can be found at:  
<http://www.zataz.net/adviso/mysql-05172005.txt> 
http://www.zataz.net/adviso/mysql-05172005.txt



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