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SyndeoCMS XSS vulnerability
XSS vulnerability in SyndeoCMS
XSS vulnerability in SyndeoCMS

Vulnerability ID: HTB22492
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_syndeocms_1.html 
Product: SyndeoCMS
Vendor: The SyndeoCMS team ( http://www.syndeocms.org/ ) 
Vulnerable Version: 2.9.0 and Probably Prior Versions
Vendor Notification: 12 July 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 save_link script to properly sanitize user-supplied input in "link_description" 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:

action="http://host/starnet/index.php?option=modulemanager&module=2&modoption=save_link&suboption=&page_id=3&link_id=2" method="post" name="main" > value="http://www.google.com">

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