Ubiquiti Networks Open Redirect

`SEC Consult Vulnerability Lab Security Advisory < 20170724-1 >  
=======================================================================  
title: Open Redirect in Login Page  
product: Multiple Ubiquiti Networks products, e.g.  
TS-16-CARRIER, TS-5-POE, TS-8-PRO, AG-HP-2G16,  
AG-HP-2G20, AG-HP-5G23, AG-HP-5G27, AirGrid M,  
AirGrid M2, AirGrid M5, AR, AR-HP, BM2HP, BM2-Ti,  
BM5HP, BM5-Ti, LiteStation M5, locoM2, locoM5,  
locoM9, M2, M3, M365, M5, M900, NB-2G18, NB-5G22,  
NB-5G25, NBM3, NBM365, NBM9, NSM2, NSM3, NSM365,  
NSM5, PBM10, PBM3, PBM365, PBM5, PICOM2HP,  
Power AP N  
vulnerable version: AirOS 6.0.1 (XM), 1.3.4 (SW)  
fixed version: AirOS 6.0.3 (XM), 1.3.5 (SW)  
CVE number:  
impact: Low  
homepage: https://www.ubnt.com/  
found: 2017-03-22  
by: T. Weber (Office Vienna)  
SEC Consult Vulnerability Lab  
  
An integrated part of SEC Consult  
Bangkok - Berlin - Linz - Montreal - Moscow  
Singapore - Vienna (HQ) - Vilnius - Zurich  
  
https://www.sec-consult.com  
  
=======================================================================  
  
Vendor description:  
-------------------  
"Ubiquiti Networks develops high-performance networking  
technology for service providers and enterprises. Our technology  
platforms focus on delivering highly advanced and easily deployable  
solutions that appeal to a global customer base in underserved and  
underpenetrated markets."  
  
Source: http://ir.ubnt.com/  
  
Business recommendation:  
------------------------  
SEC Consult recommends not to use the devices in production until a thorough  
security review has been performed by security professionals and all  
identified issues have been resolved.  
  
  
Vulnerability overview/description:  
-----------------------------------  
1) Open Redirect in Login Page - HackerOne #158287  
A open redirect vulnerability can be triggered by luring an attacked user to  
authenticate to a Ubiquiti AirOS device by clicking on a crafted link.  
This vulnerability was found earlier by another bug bounty participant  
on HackerOne. It was numbered with #158287.  
  
Proof of concept:  
-----------------  
http://<IP-of-Device>/login.cgi?uri=https://www.sec-consult.com  
  
After a successful login, the user will be redirected to  
  
https://www.sec-consult.com.  
  
Vulnerable / tested versions:  
-----------------------------  
Ubiquiti Networks AirRouter (v6.0.1)  
Ubiquiti Networks TS-8-PRO (v1.3.4)  
  
Based on information embedded in the firmware of other Ubiquiti products  
gathered from our IoT Inspector tool we believe the following devices are  
affected as well:  
Ubiquiti Networks LBE-M5-23 (Version: XW v6.0.1)  
Ubiquiti Networks NBE-M2-13 (Version: XW v6.0.1)  
Ubiquiti Networks NBE-M5-16 (Version: XW v6.0.1)  
Ubiquiti Networks NBE-M5-19 (Version: XW v6.0.1)  
Ubiquiti Networks PBE-M2-400 (Version: XW v6.0.1)  
Ubiquiti Networks PBE-M5-300 (Version: XW v6.0.1)  
Ubiquiti Networks PBE-M5-300-ISO (Version: XW v6.0.1)  
Ubiquiti Networks PBE-M5-400 (Version: XW v6.0.1)  
Ubiquiti Networks PBE-M5-400-ISO (Version: XW v6.0.1)  
Ubiquiti Networks PBE-M5-620 (Version: XW v6.0.1)  
Ubiquiti Networks RM2-Ti (Version: XW v6.0.1)  
Ubiquiti Networks RM5-Ti (Version: XW v6.0.1)  
  
Vendor contact timeline:  
------------------------  
2017-03-22: Contacting vendor via HackerOne.  
2017-03-22: Vendor marked open redirect as duplicate to: #158287  
The contact also states that this issue will be resolved  
in the next release.  
2017-05-05: Found updates (6.0.3 and 1.3.5) on the website of the vendor  
and confirmed the fix - provide at least 90 days for  
customers to apply the patch.  
2017-05-15: Contacted vendor via e-mail and set the publication date  
to 2017-07-24.  
2017-07-24: Public release of security advisory  
  
Solution:  
---------  
Upgrade to firmware version 6.0.3 (XM), 1.3.5 (SW) or later.  
  
  
Workaround:  
-----------  
No workaround  
  
  
Advisory URL:  
-------------  
https://www.sec-consult.com/en/Vulnerability-Lab/Advisories.htm  
  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
SEC Consult Vulnerability Lab  
  
SEC Consult  
Bangkok - Berlin - Linz - Montreal - Moscow  
Singapore - Vienna (HQ) - Vilnius - Zurich  
  
About SEC Consult Vulnerability Lab  
The SEC Consult Vulnerability Lab is an integrated part of SEC Consult. It  
ensures the continued knowledge gain of SEC Consult in the field of network  
and application security to stay ahead of the attacker. The SEC Consult  
Vulnerability Lab supports high-quality penetration testing and the evaluation  
of new offensive and defensive technologies for our customers. Hence our  
customers obtain the most current information about vulnerabilities and valid  
recommendation about the risk profile of new technologies.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
Interested to work with the experts of SEC Consult?  
Send us your application https://www.sec-consult.com/en/Career.htm  
  
Interested in improving your cyber security with the experts of SEC Consult?  
Contact our local offices https://www.sec-consult.com/en/About/Contact.htm  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Mail: research at sec-consult dot com  
Web: https://www.sec-consult.com  
Blog: http://blog.sec-consult.com  
Twitter: https://twitter.com/sec_consult  
  
EOF T.Weber / @2017  
  
`