include/imageObjectIM.class.php in Coppermine Photo Gallery (CPG) before 1.4.15, when the ImageMagick picture processing method is configured, allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) quality, (2) angle, or (3) clipval parameter to picEditor.php.
https://www.exploit-db.com/exploits/5019
http://www.waraxe.us/advisory-65.html
http://www.vupen.com/english/advisories/2008/0367
http://www.securitytracker.com/id?1019286
http://www.securityfocus.com/archive/1/487310/100/200/threaded