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Category:   Application (Forum/Board/Portal)  >   e107 website system Vendors:   e107.org
e107 Input Validation Hole in 'email.php' Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1022947
SecurityTracker URL:  http://securitytracker.com/id/1022947
CVE Reference:   CVE-2009-3444   (Links to External Site)
Updated:  Oct 6 2009
Original Entry Date:  Sep 25 2009
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  
Version(s): 0.7.16 and prior versions
Description:   A vulnerability was reported in e107. A remote user can conduct cross-site scripting attacks.

The 'email.php?news.1' script does not properly filter HTML code from user-supplied input in the HTTP Referer header before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the e107 website system software 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.

A demonstration exploit value is provided:

Referer: '><script>alert(document.cookie)</script>

The original advisory is available at:

http://websecurity.com.ua/3528/

MustLive reported this vulnerability.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the e107 website system software, 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.e107.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:   Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Date:  Thu, 24 Sep 2009 20:18:04 +0300
Subject:  Cross-Site Scripting vulnerability in E107

Hello Bugtraq!

I want to warn you about Cross-Site Scripting vulnerability in E107. Which I
found at 31.01.2009 and disclosed recently.

XSS:

At page for sending news to email (http://site/email.php?news.1) it's
possible to conduct XSS attack via Referer header. Particularly it can be
done via flash.

Referer: '><script>alert(document.cookie)</script>

Vulnerable are E107 0.7.16 and previous versions (all versions).

I mentioned about this vulnerability at my site
(http://websecurity.com.ua/3528/).

Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua

 
 


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