bugtraq - fusetalk CSS (comfinish.cfm)

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Message-ID: <46791039.4020609@fastcom-technology.com>
Date: Wed, 20 Jun 2007 13:32:09 +0200
From: Ivan Almuina <list-bugtraq@...tcom-technology.com>
To: bugtraq@...urityfocus.com
Subject: fusetalk CSS (comfinish.cfm)

Hello everyone,

After trying to report a SQL bug (autherror.cfm) to FuseTalk, and seeing them
providing patches to customers (dropping new fixed .cfm files in a private place
reserved to customers) without giving proper credits and without reporting them
publicly (we were following the Full Disclosure Policy v2.0), we decided to
release the advisories without contacting them concerning the other bugs we
found. Here is the third one:
------------------------
Advisory: FuseTalk affected by multiple Cross Site Scripting bugs
Product: FuseTalk Basic/Standard/Enterprise ColdFusion version
Version: unknown, the vendor fixes bugs without changing version number
Risk: Medium
Reported on: Not reported
Vendor: FuseTalk
Impact: execution of script code in the victim's browser window

Product Overview
------------------------
With an easy-to-use, intuitive administration system, extensive customization
capabilities and a rich feature set, FuseTalk is a pleasure to use for both
administrators and forum members. Full RDBMS support, high performance and full
linear scalability allow FuseTalk to meet your demands.Over 1,000 customers use
FuseTalk to deliver the benefits of collaborative online communities, including
VCampus, Rockwell, Seagate Software, Macromedia, Hasbro, U.S. Air Force, AT&T,
Citicorp, McCormick and Company, Adobe, eBay, AnandTech, NASA, Bloomberg,
the U.S. Dept. of Energy, VISA, etc.

Summary
------------------------
FuseTalk is vulnerable to multiple Cross Site Scripting bugs.

Technical Details
------------------------
The problem lies in the script comfinish.cfm that can be found on
blog/include/common/comfinish.cfm
and/or
forum/include/common/comfinish.cfm

the variable FTVAR_SCRIPTRUN is not sanitized.

Proof of Concept (PoC)
------------------------
http://[srv]/forum/include/common/comfinish.cfm?FTRESULT.errorcode=0
&FTVAR_SCRIPTRUN=alert(document.cookie)

http://[srv]/blog/include/common/comfinish.cfm?FTRESULT.errorcode=0
&FTVAR_SCRIPTRUN=alert(document.cookie)

Credit
------------------------
Discovered by Ivan Almuina of Fastcom Technology SA.

Contact
------------------------
almuina at domainname (following domain)
fastcom-technology.com

Disclaimer
------------------------
The information within this paper may change without notice.
Use of this information constitutes acceptance for use in an AS IS condition.
There are no warranties, implied or express, with regard to this information.
In no event shall the author be liable for any direct or indirect damages
whatsoever arising out of or in connection with the use or spread of this
information. Any use of this information is at the user's own risk.
---

More fusetalk advisories to come,


-- 
Ivan Almuina

Fastcom Technology S.A.
Phone: +41 21 619 06 70
Fax:   +41 21 619 06 71
Internet: http://www.fastcom-technology.com/