bugtraq - XSS vulnerability in CruxCMS

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Message-Id: <201007081440.o68Ee6kK097253@htbridge.ch>
Date: Thu, 8 Jul 2010 16:40:06 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: XSS vulnerability in CruxCMS

Vulnerability ID: HTB22445
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_cruxcms.html
Product: CruxCMS
Vendor: CruxSoftware
Vulnerable Version: 3.00 and Probably Prior Versions
Vendor Notification: 21 June 2010 
Vulnerability Type: 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 "search.php" script to properly sanitize user-supplied input in "search" 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/search.php?search=%27%22%3E%3Cscript%3Ealert%28234%29%3C/script%3E