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Category:   Application (Forum/Board/Portal)  >   ChitChat.NET Vendors:   Clickcess Ltd
ChitChat.NET Input Filtering Holes in 'Name' and 'TopicTitle' Permit Remote Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1007496
SecurityTracker URL:  http://securitytracker.com/id/1007496
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Aug 13 2003
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 2.0
Description:   Zone-h Security Team reported a vulnerability in 'ChitChat.NET'. A remote user can conduct cross-site scripting attacks.

It is reported that the software does not properly filter HTML code from the 'Name' and 'Topic Title' fields. A remote user can insert some specially crafted text into either or both of those fields as part of a chat session. Then, when the target user views the message, arbitrary scripting code will be executed by the target user's browser. The code will originate from the site running the ChitChat.NET 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.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the ChitChat.NET 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:   The vendor has reportedly issued a patch.
Vendor URL:  clickcess.com/asp/product.asp?recorprod=&product=96 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  ZH2003-24SA (security advisory): ChitChat.NET XSS Vulnerability




ZH2003-24SA (security advisory): ChitChat.NET XSS Vulnerability


Published: 13 august 2003

Released: 13 august 2003

Name: ChitChat.NET

Affected Systems: 2.0

Issue: Remote attackers can inject XSS script

Author: G00db0y@zone-h.org

Vendor: http://clickcess.com/



Description

***********

Zone-h Security Team has discovered a flaw in ChitChat.NET v2.0 (and older 
versions?).
"ChitChat.NET is an ASP.NET based discussion forum designed specifically 
for SQL Server." 




Details

*******
 
It's possibile to inject XSS script in the Name box and in the Topic Title 
box.

For example try this:

Name: <script>alert(Zone-h1)</script>

Email address: test@test.com

Topic title: <script>alert(Zone-h)</script>

Message: www.Zone-h.org



Solution:

*********

The vendor has been contacted and a patch was produced.


Suggestions:

************

Filter the posting procedure.


G00db0y - www.zone-h.org admin

Original advisory here: http://www.zone-h.org/en/advisories/read/id=2882/

 
 


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