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TUCoPS :: Web :: CMS / Portals :: b1a-1497.htm

phpwcms XSS vulnerability



XSS vulnerability in phpwcms
XSS vulnerability in phpwcms



Vulnerability ID: HTB22475
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_phpwcms.html 
Product: phpwcms 
Vendor: Oliver Georgi ( http://www.phpwcms.de/ ) 
Vulnerable Version: 1.4.5 and Probably Prior Versions
Vendor Notification: 01 July 2010 
Vulnerability Type: Stored XSS (Cross Site Scripting)
Status: Fixed by Vendor
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 "phpwcms.php" script to properly sanitize user-supplied input in "calendardate" 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:


http://host/phpwcms.php?do=modules&module=calendar&calendardate=8-2010%22+onmouseover=alert%2834%29+style=position:absolute;width:100%;height:100%;left:0;top:0;+%22 

Solution: Upgrade to the most recent version



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