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CruxCMS XSS vulnerability
XSS vulnerability in CruxCMS
XSS vulnerability in CruxCMS

Vulnerability ID: HTB22446
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_cruxcms_1.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 "/login.php" script to properly sanitize user-supplied input in "txtusername" POST parameter. 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/manager/login.php" name="main">

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