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. ... t>alert (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@hat-
squad.com)