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Date: Thu, 20 Aug 2015 14:37:33 +0200
From: Vulnerability Lab <>
Subject: UBNT Bug Bounty #1 - Client Side Cross Site Scripting Vulnerability

Document Title:
UBNT Bug Bounty #1 - Client Side Cross Site Scripting Vulnerability

References (Source):


Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Product & Service Introduction:
Ubiquiti Networks is an American technology company started in 2005. Based in San Jose, California they are a manufacturer of 
wireless products whose primary focus is on under-served and emerging markets.

(Copy of the Homepage: )

Abstract Advisory Information:
The Vulnerability Laboratory Research Team discovered a client-side cross site scripting web vulnerability in the official Ubnt online service web-application.

Vulnerability Disclosure Timeline:
2015-03-17: Researcher Notification & Coordination (Hadji Samir)
2015-03-18: Vendor Notification (Ubnt Security Team - Bug Bounty Program)
2015-04-03: Vendor Response/Feedback (Ubnt Security Team - Bug Bounty Program)
2015-07-24: Vendor Fix/Patch (Ubnt Developer Team)
2015-08-12: Bug Bounty Reward (Ubnt Security Team - Bug Bounty Program)
2015-08-17: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Affected Product(s):
Ubiquiti Network
Product: Ubnt Store - Web Application (Online-Service) 2015 Q2

Exploitation Technique:

Severity Level:

Technical Details & Description:
A non persistent cross site scripting web vulnerability has been discovered in the official Cisco Newsroom online service web-application.
The vulnerability allows remote attackers to hijack website customer, moderator or admin sessions data by client-side manipulated cross site requests.

The vulnerability is located in the `bridgename` value of the service module. The injection point 
of the issue is the vulnerable uploader.swf file. Remote attackers are able to inject own script codes to the vulnerable GET method request of the 
uploader.swf module.  The attack vector of the vulnerability is located on the client-side of the ubnt store web-application. The request method to 
inject the script code to the client-side is `GET`. The execution of the script code occurs in the same swf files context.

The security risk of the non-persistent input validation web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 2.8.
Exploitation of the client-side cross site scripting web vulnerability requires low user interaction (click) and no privileged application user account. 
Successful exploitation results in client-side account theft by hijacking, client-side phishing, client-side external redirects and non-persistent manipulation 
of affected or connected service modules.

Request Method(s):
						[+] GET

Vulnerable Service(s):
						[+] Ubnt Store - (

Vulnerable Module(s):
						[+] uploader.swf

Vulnerable Parameter(s):
						[+] bridgeName

Proof of Concept (PoC):
The remote cross site vulnerability in the swf file can be exploited by remote attackers without privileged application user account and with low or medium user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

PoC: Example
string attack uploader.swf?bridgeName=1``]));}catch(s){alert('hadjisamir')}//

PoC: Payload``]));}catch(s){alert('hadjisamir')}//Hadji Samir

Reference(s): in the (uploader.swf)

Solution - Fix & Patch:
Encode the bridgeName value in the uploaded swf files to prevent client-side script code injection attacks or cross site scripting.

Security Risk:
The security risk of the client-side cross site scripting web vulnerabilities in the swf file is estimated as medium. (CVSS 2.8)

Credits & Authors:
Vulnerability Laboratory [Research Team] - Hadji Samir []

Disclaimer & Information:
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed 
or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable 
in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab 
or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for 
consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses, 
policies, deface websites, hack into databases or trade with fraud/stolen material.

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