e107 < 0.7.8 - 'photograph' Arbitrary File Upload

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#INFO:
#Program Title ################################################################################
#e107 <= 0.7.8 - Arbitrary File Upload
#
#Description ##################################################################################
#"e107 is a content management system written in PHP and using the popular open source MySQL
#database system for content storage. It's completely free, totally customisable and in
#constant development" - e107.org
#
#Script Download ##############################################################################
#http://e107.org/edownload.php
#
#Original Advisory ############################################################################
#http://www.g00ns-forum.net/showthread.php?t=9388
#
#Vuln #########################################################################################
#vuln discovered by clorox
#shoutz: z3r0, milf, blackhill, godxcel, murderskillz, kirby, katalyst, SyNiCaL, OD, pr0be, rezen, str0ke,
#fish, rey, canuck, ,vipsta, c0ma, grumpy, sick, trin, asdfhacks.com , a59, freeillwill.com, seven, tower, fury,
#SS, <S>, Bernard, rst.void.ru, awesome andrew, and everyone else at g00ns.net
#
#Details ######################################################################################
#note: e107 is only vulnerable if it allows you to upload a photograph, avatars will not work.#
#to enable this an admin has to manually the settings in change e107_admin/users.php?options  #
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#signup.php does not verify that a file submitted as an image is actually an image. it controls files uploaded
#only by the extension. files with a .php extension are blocked, but you can simply rename a php document to
#document.php.jpg and it passes the image verification and is uploaded.  to get the path of the file you uploaded
#you view your profile, view the source of the page and search for the name of the file and it will be there with
#a few random numbers in it, and now all an attacker would have to do is simply call the evil script up and the
#server has been compromised.
#GoogleDork: "Please note: Any image uploaded to this server that is deemed inappropriate by the administrators will be deleted immediately."
#
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# milw0rm.com [2007-06-24]