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Home arrow SecurityAlert Database

Arrow  Topic :

SiteScape forum prior 7.3 Cross Site Scripting


Arrow  SecurityAlert : 2893
Arrow  CVE : CVE-2007-3807
Arrow  SecurityRisk : Low  Security Risk Low  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : Yes
Arrow  Credit : Marc Ruef
Arrow  Published : 20.07.2007

Arrow  Affected Software : SiteScape forum prior 7.3



Arrow  Advisory Content :  

SiteScape forum prior 7.3 Cross Site Scripting

scip AG Vulnerability ID 3159 (07/13/2007)
http://www.scip.ch/cgi-bin/smss/showadvf.pl?id=3159

I. INTRODUCTION

SiteScape forum is a commercial web forum. It uses presence to connect
teams through phone, IM, chat, SMS and email, as well as voice- and
web-conferencing. The application also supports online threaded
discussions and creation of content through blogs, wikis and
workflow-driven document and task management.

More information is available at the official web site at the following
URL:

http://www.sitescape.com/

II. DESCRIPTION

Marc Ruef at scip AG found an input validation error within SiteScape
Forum prior release 7.3.

Some scripts that are not protected by any authentication procedure can
be used to run arbitrary script code within a cross site scripting attack.

Other parts of the application might be affected too.

III. EXPLOITATION

Classic script injection techniques and unexpected input data within a
browser session can be used to exploit this vulnerabilities.

The simple approach to verify an insecure installation is within the
login procedure. Use the following string as user name and a wrong
passwort for the simple proof-of-concept[1]:

<script>alert('scip');</script>

A plugin for our open-source exploiting framework "Attack Tool Kit"
(ATK) will be published in the near future. [2]

IV. IMPACT

Because non-authenticated parts of the software are affected, these
vulnerabilities are serious for every secure environment.
Non-authenticated users might be able to exploit this flaw to gain
elevated privileges (e.g. extracting sensitive cookie information or
launch a buffer overflow attack against another web browser).

Because other parts of the application might be affected too - this
could include some second order vulnerabilities - a severe attack
scenario might be possible.

V. DETECTION

Detection of web based attacks requires a specialized web proxy and/or
intrusion detection system. Patterns for such a detection are available
and easy to implement.

VI. SOLUTION

We have informed SiteScape on a very early stage. They told us that the
problem was not announced within a public advisory. But it is already
solved within the latest release of the discussed software. Therefore,
an upgrade to SiteScape Forum 7.3 or newer will solve the issues.

VII. VENDOR RESPONSE

SiteScape has been informed a first time at 06/29/2007 via email at
info-at-sitescape.com. A very kind reply by Chris Pressley came back
some minutes later. Further discussion of the flaw (how to reproduce)
and the co-ordination of a public advisory was made.

VIII. SOURCES

scip AG - Security Consulting Information Process (german)
http://www.scip.ch/

scip AG Vulnerability Database (german)
http://www.scip.ch/cgi-bin/smss/showadvf.pl?id=3159

computec.ch document data base (german)
http://www.computec.ch/download.php

Die Kunst des Penetration Testing (german)
http://www.amazon.de/dp/3936546495/

IX. DISCLOSURE TIMELINE

06/27/07 Identification of the vulnerabilities
06/29/07 First response to info-at-sitescape.com
06/29/07 Immediate reply by Chris Pressley
07/09/07 Co-ordination of the advisory release
07/13/07 Public advisory

IX. CREDITS

The vulnerabilities were discovered by Marc Ruef.

Marc Ruef, scip AG, Zuerich, Switzerland
maru-at-scip.ch
http://www.scip.ch/

A1. BIBLIOGRAPHY

[1] http://www.amazon.de/dp/3936546495/
[2] http://www.computec.ch/projekte/atk/

A2. LEGAL NOTICES

Copyright (c) 2007 scip AG, Switzerland.

Permission is granted for the re-distribution of this alert. It may not
be edited in any way without permission of scip AG.

The information in the advisory is believed to be accurate at the time
of publishing based on currently available information. There are no
warranties with regard to this information. Neither the author nor the
publisher accepts any liability for any direct, indirect or
consequential loss or damage from use of or reliance on this advisory.




Arrow  Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.
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