TUCoPS :: Web :: Apps :: a6119.htm

Coppermine Photo Gallery remote command execution
8th Apr 2003 [SBWID-6119]
COMMAND

	Coppermine Photo Gallery remote command execution

SYSTEMS AFFECTED

	Coppermine 1.0 RC3 - maybe prior versions

PROBLEM

	Berend-Jan Wever [http://spoor12.edup.tudelft.nl] found following  about
	Coppermine Photo Gallery, a PHP script to generate photo galleries:
	
	
	Coppermine allows the uploading of images onto a  server  by  logged  in
	users and in a lot  of  configurations  even  anonymous  uploading.  The
	upload script has a buggy extention checking routine  which  allows  the
	uploading of ".jpg.php" files. These files need to be a valid  jpg-files
	or Coppermine will delete them. It is trivial to create a file which  is
	a valid jpg and also a valid PHP script. Once uploaded, the  PHP  script
	can then be executed, allowing access to the  remote  server  under  the
	priviledges of the user PHP is running under.
	
	
	 Exploit
	 =======
	
	Attached is a working exploit, upload this onto a vulnerable server  and
	execute it like this:
	/albums/userpics/Copperminer.jpg.php?[command]
	Where command can be something like "id;uname%20-a" or "cat%20/etc/passwd"
	Note 1: MSIE will display Copperminer.jpg.php  as  an  image,  but  lynx
	will display the output of the command you gave it.
	Note 2: http://www.google.com/search?q=allinurl%3A+/upload.php?album=
	
	 File
	 ====
	
	
	begin 644 sample.jpg.php
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	`
	end
	

SOLUTION

	Patch available on software web site: http://www.chezgreg.net/coppermine/

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