phpMyAdmin can be configured to save an export file on the web server, via its SaveDir directive. With this in place, it's possible, either via a crafted filename template or a crafted table name, to save a double extension file like foobar.php.sql. In turn, an Apache webserver on which there is no definition for the MIME type "sql" (the default) will treat this saved file as a ".php" script, leading to remote code execution.
This vulnerability can be triggered only by someone who logged in to phpMyAdmin, as the usual token protection prevents non-logged-in users to access the required form. Moreover, the SaveDir directive is empty by default, so a default configuration is not vulnerable. The $cfg['SaveDir'] directive must be configured, and the server must be running Apache with mod_mime to be exploitable.
This is fixed via the following commits:
Created phpMyAdmin tracking bugs for this issue
Affects: fedora-all [bug 956403]
Affects: epel-6 [bug 956404]
Created phpMyAdmin3 tracking bugs for this issue
Affects: epel-5 [bug 956405]
phpMyAdmin3-18.104.22.168-1.el5 has been pushed to the Fedora EPEL 5 stable repository. If problems still persist, please make note of it in this bug report.
phpMyAdmin-22.214.171.124-1.el6 has been pushed to the Fedora EPEL 6 stable repository. If problems still persist, please make note of it in this bug report.