bugtraq - [Hat-Squad] i-Gallery directory traversal

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Date: Mon, 20 Jun 2005 18:01:07 +0000
From: "Hat-Squad Security Team" <bugtraq@...-squad.com>
To: bugtraq@...urityfocus.com
Subject: [Hat-Squad] i-Gallery directory traversal

Hat-Squad Advisory: i-Gallery directory traversal

Product: i-Gallery
Vendor Url: http://www.b-cp.com
Version: 3.3 (older versions not tested , but assumed vulnerable)
Vulnerability: Directory traversal and CSS bug
Release Date: 

Vendor Status:
Informed: 	   15 June 2005
Second Contact: 19 June 2005
Advisory Released:      20 June 2005

Overview:

i-Gallery is a complete online photo gallery. Easy to navigate 
thumbnails with paging.
Enlarged views offer print & email buttons. Secured backend features: 
create/delete folders,
upload/delete images, add descriptions, move images, and much more...

########################################################################

Problem 1:

The i-Gallery uses no protection to avoid the directory traversal bug.
The problem happens when the attacker uses the classic pattern "/../" 
that
allows him to see and download any file in the remote system knowing the
path.By use of preview feature of the i-Gallery it`s possible to get 
list
of directory files ( not folders ) and attempt to download them .so not
like most of directory traversal attacks , due to the nature of i-
gallery
you only need to be aware of correct directory path . file name will be
handleded by i-gallery in a nice interface :>

Attack is possible on almost all asp files to get files , but my favor 
browse interface is the "folderview.asp" file .

Google Scanner :

inurl:"/gallery/folderview.asp?folder="

sample exploit :

http://<host>/gallery/folderview.asp?
folder=Sport+Champions/../../../../../../../../winnt/repair

you`ll probebly go for "SAM" but I should notice you a little challenge 
while downloading files without
extencions AND the permision staff ;)

########################################################################

Problem 2:

i-Gallery lack of input validation for any user request . as a resault 
attacks
like cross-site scripting become possible , and steal stored cookies of 
secured
interface of i-Gallery become possible to name one example. 

Sample Exploit:

http://<host>/gallery/folderview.asp?folder=<script>alert
(document.cookie)</script>

########################################################################

Workaround :

Apply vendor patch.
( No responce from vendor up to now )

Credits:

This Vulnerability has been discovered by Seyed Hamid Kashfi(hamid@...-
squad.com)