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Category:   Application (Forum/Board/Portal)  >   Ikonboard Vendors:   Ikonboard.com
Ikonboard Input Filtering Bug in Photo URL and Another Field Allows Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1005777
SecurityTracker URL:  http://securitytracker.com/id/1005777
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Dec 9 2002
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information, User access via network
Exploit Included:  Yes  
Version(s): 3.1.1
Description:   Some input validation vulnerabilities were reported in the Ikonboard forum software. A remote user can conduct cross-site scripting attacks against Ikonboard users.

SECURITY.NNOV reported that a remote user can insert Javascript in their Photo URL. Then, if a target user accesses the remote user's profile, the Javascript will be executed. The code will originate from the Ikonboard site and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

It is also reported that a remote user can access Ikonboard via a proxy to cause the 'X-Forwarded-For:' header line to be displayed to the administrator instead of proxy IP address. This line is not filtered to remove HTML code. The length of the field is reportedly limited to 16 characters, but still allows some scripting if the scripting is split between two requests

The vendor has reportedly been notified.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running Ikonboard, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   No solution was available at the time of this entry.
Vendor URL:  www.ikonboard.com/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


 Source Message Contents

Subject:  SECURITY.NNOV: more Ikonboard 3.1.1 crossite scriptings



Ikonboard 3.1.1

  There are few ways to insert HTML tags into board content.

  1. Via Photo URL.

  In profile user can set URL of photo. It's possible to insert URL like

  javascript:alert(document.cookie)

  Javascript will be triggered if someone accesses user's profile.

  2. Via X-Forwarded-For: header.

  User's  IPs  are  available  for admin. If user accesses Ikonboard via
  Proxy,  X-Forwarded-For:  header  is shown instead of proxy IP without
  filtering. Length is limited to 16 characters, but it's still possible
  do something interesting with 2 requests <script>/* and */<script>.

Vendor was contacted November, 29 with no reply.
  
-- 
http://www.security.nnov.ru
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