CVE-2012-4452 Information

Description

MySQL 5.0.88 and possibly other versions and platforms allows local users to bypass certain privilege checks by calling CREATE TABLE on a MyISAM table with modified (1) DATA DIRECTORY or (2) INDEX DIRECTORY arguments that are originally associated with pathnames without symlinks and that can point to tables created at a future time at which a pathname is modified to contain a symlink to a subdirectory of the MySQL data home directory related to incorrect calculation of the mysql_unpacked_real_data_home value. NOTE: this vulnerability exists because of a CVE-2009-4030 regression which was not omitted in other packages and versions such as MySQL 5.0.95 in Red Hat Enterprise Linux 6.

Reference

http://rhn.redhat.com/errata/RHSA-2013-0121.html http://www.openwall.com/lists/oss-security/2012/09/27/1 http://www.securityfocus.com/bid/55715 https://bugzilla.redhat.com/show_bug.cgi?id=860808