bugtraq - Cross-Site Scripting (XSS) vulnerability in Quick.Cms and Quick.Cart

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Date: Wed,  9 Jan 2013 12:42:40 +0100 (CET)
From: advisory@...ridge.com
To: bugtraq@...urityfocus.com
Subject: Cross-Site Scripting (XSS) vulnerability in Quick.Cms and Quick.Cart

Advisory ID: HTB23135
Product: Quick.Cms, Quick.Cart
Vendor: OpenSolution team
Vulnerable Version(s): Quick.Cms 5.0, Quick.Cart 6.0 and probably prior
Tested Version: Quick.Cms 5.0, Quick.Cart 6.0
Vendor Notification: December 19, 2012 
Vendor Patch: December 20, 2012 
Public Disclosure: January 9, 2013 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2012-6430
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status: Fixed by Vendor
Risk Level: Medium 
Discovered and Provided: High-Tech Bridge Security Research Lab ( https://www.htbridge.com/advisory/ ) 

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Advisory Details:

High-Tech Bridge Security Research Lab discovered XSS vulnerability in Quick.Cms and Quick.Cart - two products developed by OpenSolution team, which can be exploited to perform cross-site scripting attacks.

1. Cross-Site Scripting (XSS) vulnerability in Quick.Cms and Quick.Cart: CVE-2012-6430

The vulnerability exists due to insufficient filtration of user-supplied data in URI in the "admin.php" script. A remote attacker can trick a logged-in administrator to open a specially crafted link and execute arbitrary HTML and script code in browser in context of the vulnerable website.

The exploitation example below uses the "alert()" JavaScript function to display administrator's cookies: 

http://[host]/admin.php/')"></select><script>alert(document.cookie);</script>/

Nevertheless, a remote attacker can create an exploit for this vulnerability to bypass application's CSRF protection mechanism based on the HTTP Referer header and get access to privileged functions of the application. To do so he have to trick a logged-in administrator to click on a malicious link with XSS exploit.

PoC (Prof-of-Concept) code below will change administrator's password to "password":

http://[host]/admin.php/')"></select><form action="http://[host]/admin.php%3fp=tools-config" method="post"><input type="hidden" name="login" value="login"><input type="hidden" name="pass" value="password"><input type="submit" id="btn" name="sOption"></form><script>document.getElementById('btn').click();</script>/

Successful exploitation of the vulnerability requires that Apache directive "AcceptPathInfo" is set to "on" or "default" (default value is "default").

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Solution:

Vendor fixed the vulnerabilities without adding information to Changelog. 
Upgrade to Quick.Cms 5.0 and Quick.Cart 6.0 released after December 19, 2012

More Information:
http://opensolution.org/download,en,18.html?sDir=Quick.Cart
http://opensolution.org/download,en,18.html?sDir=Quick.Cms

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References:

[1] High-Tech Bridge Advisory HTB23135 - https://www.htbridge.com/advisory/HTB23135 - Cross-Site Scripting (XSS) vulnerability in Quick.Cms and Quick.Cart.
[2] Quick.Cms and Quick.Cart - http://opensolution.org/ - Simple and easy to use or modify content management system (CMS) and shopping cart.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types. 

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Disclaimer: The information provided in this Advisory is provided "as is" and without any warranty of any kind. Details of this Advisory may be updated in order to provide as accurate information as possible. The latest version of the Advisory is available on web page [1] in the References.