V-SOL GPON/EPON OLT Platform v2.03 Link Manipulation Vulnerability

Title: V-SOL GPON/EPON OLT Platform v2.03 Link Manipulation Vulnerability
Advisory ID: ZSL-2019-5535
Type: Local/Remote
Impact: Spoofing
Risk: (3/5)
Release Date: 26.09.2019
Summary
GPON is currently the leading FTTH standard in broadband access technology being widely deployed by service providers around the world. GPON/EPON OLT products are 1U height 19 inch rack mount products. The features of the OLT are small, convenient, flexible, easy to deploy, high performance. It is appropriate to be deployed in compact room environment. The OLTs can be used for 'Triple-Play', VPN, IP Camera, Enterprise LAN and ICT applications.
Description
Input passed via the 'parent' GET parameter in 'bindProfile.html' script is not properly verified before being used to redirect users. This can be exploited to redirect a logged-in user to an arbitrary website e.g. when a user clicks a specially crafted link to the affected script hosted on a trusted domain.
Vendor
Guangzhou V-SOLUTION Electronic Technology Co., Ltd. - https://www.vsolcn.com
Affected Version
V2.03.62R_IPv6
V2.03.54R
V2.03.52R
V2.03.49
V2.03.47
V2.03.40
V2.03.26
V2.03.24
V1.8.6
V1.4
Tested On
GoAhead-Webs
Vendor Status
N/A
PoC
gpon_olt_urlredirect.txt
Credits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>
References
[1] https://packetstormsecurity.com/files/154628
[2] https://exchange.xforce.ibmcloud.com/vulnerabilities/167772
[3] https://cxsecurity.com/issue/WLB-2019090193
Changelog
[26.09.2019] - Initial release
[03.10.2019] - Added reference [1], [2] and [3]
Contact
Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk