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[FD] LineNity WP Premium Theme - File Include Vulnerability
- To: fulldisclosure@xxxxxxxxxxxx
- Subject: [FD] LineNity WP Premium Theme - File Include Vulnerability
- From: Vulnerability Lab <research@xxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 17 Nov 2015 14:18:10 +0100
Document Title:
===============
LineNity WP Premium Theme - File Include Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1645
Release Date:
=============
2015-11-15
Vulnerability Laboratory ID (VL-ID):
====================================
1645
Common Vulnerability Scoring System:
====================================
6.8
Product & Service Introduction:
===============================
Linenity wordpress theme is a that features a clean and flexible design which
suitable for wide variety of websites. Linenity wp theme includes a huge
theme control panel that help user to develop or customize the theme. It also
includes different kind of homepage style, widget, footer, post type,
shortcode and many others. Linenity also Cross-Browser and Responsive theme,
has clean style and well-documented.
(Copy of the Homepage:
http://themeforest.net/item/linenity-clean-responsive-wordpress-magazine/4417803
)
Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a file include
web vulnerability in the official WordPress LineNity Premium Theme in 2015Q4.
Vulnerability Disclosure Timeline:
==================================
2015-11-13: Report to Vulnerability Lab (Sajjad Sotoudeh - White-hg)
2015-11-15: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Wordpress Premium Themes
Product: LineNity - (WordPress Responsive Magazine Theme) 1.20
Exploitation Technique:
=======================
Remote
Severity Level:
===============
High
Technical Details & Description:
================================
A local file include web vulnerability has been discovered in the official
WordPress LineNity Premium Theme in 2015Q4.
The local file include web vulnerability allows remote attackers to
unauthorized include local file/path requests or system
specific path commands to compromise the web-application.
The web vulnerability is located in the `imgurl` value of the `download.php`
file. Remote attackers are able to inject own files with malicious
`imgurl` value in the `download.php` file GET method request to compromise the
web-application. The local file/path include execution occcurs in
the download.php. The request method to inject is GET and the attack vector is
located on the client-side of the wordpress theme web-application.
The security risk of the local file include vulnerability is estimated as high
with a cvss (common vulnerability scoring system) count of 6.8.
Exploitation of the file include web vulnerability requires no user interaction
and no privileged web-application user account.
Successful exploitation of the local file include vulnerability results in
web-application, dbms and connected account system -compromise.
Request Method(s):
[+] [GET]
Vulnerable Module(s):
[+] ./wp-content/themes/linenity/functions/
Vulnerable File(s):
[+] download.php
Vulnerable Parameter(s):
[+] imgurl
Proof of Concept (PoC):
=======================
The file include web vulnerability can be exploited by remote attackers with
low privilege web-application user account and without user interaction.
For security demonstration or to reproduce the vulnerability follow the
provided information and steps below to continue.
Google Dork(s):
index of: /wp-content/themes/linenity
Exploit:
http://localhost:8080/wp-content/themes/linenity/functions/download.php?imgurl=[
Local File Inclusion ]
PoC:
http://localhost:8080/wp-content/themes/linenity/functions/download.php?imgurl=../../../../index.php
http://localhost:8080/wordpress/wp-content/themes/linenity/functions/download.php?imgurl=../../../../../../../../../../../../../../../etc/passwd
Solution - Fix & Patch:
=======================
The vulnerability can be patched by a secure restriction of the requested path
value in the imgurl value of the vulnerable download.php file.
Restrict the requests by a whitelist of accessable web-server path.
Security Risk:
==============
The security risk of the file include web vulnerability in the web application
is estimated as high. (CVSS 6.8)
Credits & Authors:
==================
Sajjad Sotoudeh - [sajjadsotoudeh@xxxxxxxxx] (http://www.y-r-s.net &
www.white-hg.com) [http://www.vulnerability-lab.com/show.php?user=white-hg]
We are: KamraN HellisH - Dr.RooT - Dr.Repermind - Milad_Inj3ct0r - 4li-3ndG &
All white-hg members
Disclaimer & Information:
=========================
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