bugtraq - Cross-Site Scripting (XSS) in Ad-minister Wordpress plugin

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Date: Thu, 26 Dec 2013 12:09:22 +0100 (CET)
From: High-Tech Bridge Security Research <advisory@...ridge.com>
To: bugtraq@...urityfocus.com
Subject: Cross-Site Scripting (XSS) in Ad-minister Wordpress plugin

Advisory ID: HTB23187
Product: Ad-minister Wordpress plugin
Vendor: henrikmelin, kalstrom
Vulnerable Version(s): 0.6 and probably prior
Tested Version: 0.6
Advisory Publication:  December 5, 2013  [without technical details]
Vendor Notification: December 5, 2013 
Public Disclosure: December 26, 2013 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2013-6993
Risk Level: Low 
CVSSv2 Base Score: 2.6 (AV:N/AC:H/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 Ad-minister Wordpress plugin, which can be exploited to perform Cross-Site Scripting (XSS) attacks.

1) Cross-Site Scripting (XSS) in Ad-minister Wordpress plugin: CVE-2013-6993

The vulnerability exists due to insufficient sanitisation of user-supplied data in "key" HTTP GET parameter passed to "/wp-admin/tools.php" script. A remote attacker can trick a logged-in administrator 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:

http://[host]/wp-admin/tools.php?page=ad-minister&tab=positions&action=delete&key=%27%3E%3Cscript%3Ealert%28immuniweb%29;%3C/script%3E

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Solution:

Vendor did not reply to 3 notifications by email, 1 notification via twitter, 1 forum thread. Currently we are not aware of any official solution for this vulnerability.

Unofficial patch was developed by High-Tech Bridge Security Research Lab and is available here: https://www.htbridge.com/advisory/HTB23187-patch.zip

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References:

[1] High-Tech Bridge Advisory HTB23187 - https://www.htbridge.com/advisory/HTB23187 - Cross-Site Scripting (XSS) in Ad-minister Wordpress plugin.
[2] Ad-minister Wordpress plugin - http://wordpress.org/plugins/ad-minister/ - A complete system for handling advertising, including ad-rotation (with weights), scheduling and support for theme widgets.
[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.