Vanilla 1.1.7 Cross Site Scripting

`Author: Gerendi Sandor Attila  
Original advisory: http://gsasec.blogspot.com/2009/05/vanilla-v117-cross-site-scripting.html  
Date: May 14, 2009  
Package: Vanilla (1.1.7)  
Product Homepage: http://getvanilla.com/  
Versions Affected: v.1.1.7, 1.1.5 (Other versions may also be affected)  
Severity: Medium  
  
Input passed to the 'RequestName' header parameter when posting to '/ajax/updatecheck.php' is not sanitized before it is returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.  
  
Example:  
  
http://somehost/ajax/updatecheck.php?PostBackKey=1&ExtensionKey=1&RequestName=1<script>alert(123)</script>  
  
will return:  
  
1<script>alert(123)</script>|[ERROR]There was a problem authenticating your post information.  
  
  
Status:  
1. Contacted the author at: May 15, 2009 via http://lussumo.com/  
2. The author corrected the problem in the same day (read here).  
Publicat de Attila la 11:50 PM 0 comentarii   
`