iSmartAlarm Backend Server-Side Request Forgery

[+] Credits: Ilia Shnaidman
[+] Source:
http://dojo.bullguard.com/blog/burglar-hacker-when-a-physical-security-is-compromised-by-iot-vulnerabilities/


Vendor: [+] Credits: Ilia Shnaidman
[+] Source:
http://dojo.bullguard.com/blog/burglar-hacker-when-a-physical-security-is-compromised-by-iot-vulnerabilities/


Vendor:
=============
iSmartAlarm, inc.


Product:
=============
iSmartAlarm Backend

iSmartAlarm is one of the leading IoT manufactures in the domain of smart alarm systems.
It provides a fully integrated alarm system with siren, smart cameras and locks.
It functions like any alarm system, but with the benefits of a connected device: alerts pop up on your phone,
offering you full remote control via mobile app wherever you are.


Vulnerability Type:
=============
Server Side Request Forgery


CVE Reference:
=============
CVE-2017-7727


Security Issue:
================
Open Redirection -
iSmartAlarm is not validating injection inside its api.


Attack Vectors:
===============
One of the backend api's contains an SSRF which allows me to use it as a proxy.
An attacker can use iSmartAlarm's backend as a proxy server and potentially launch outbound attacks.
PoC:
https://api.ismartalarm.com:8443/api/downloadfile.ashx?url=https://ifconfig.io


Network Access:
===============
Remote


Severity:
=========
High


Disclosure Timeline:
=====================================
Jan 30, 2017: Initial contact to vendor
Feb 1, 2017: Vendor replied, requesting details
Feb 2, 2017: Disclosure to vendor
Apr 12, 2017: After vendor didn't replied, I've approached CERT
Apr 13, 2017: Confirmed receipt by CERT and assigning CVEs
July 05, 2017: Public disclosure