MySQL < 4.0.12 && MySQL <= 5.0.4 : Insecure tmp file handling

["ZATAZ.net" <exploits () zataz net>]

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MySQL mysql_install_db data manipulation
vendor: http://www.mysql.com
advisory: http://www.zataz.net/adviso/mysql-05172005.txt
vendor informed: yes exploit available:no

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

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

##########
versions:
##########

MySQL < 4.0.12
MySQL <= 5.0.4

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Solution:
##########

For MySQL 4.0.x update to the new version 4.0.12
MySQL 5.0.4 still vulnerable.

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timeline:
#########

discovered : 2005-05-07
vendor notified : 2005-05-09
vendor response : 2005-05-09
vendor fix :  2005-05-17
disclosure : 2005-05-17

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Technical details :
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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

#####################
Credits :
#####################

Eric Romang (eromang () zataz net - ZATAZ)
Thxs to Gentoo Security Team. (Taviso, Sune, jaervosz, etc.)


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