KZTech/JatonTec/Neotel JT3500V 4G LTE CPE 2.0.1 Unauthenticated Device Reboot (DoS)  
Vendor: KZ Broadband Technologies, Ltd. | Jaton Technology, Ltd.  
Product web page: | |  
Affected version: Model | Firmware  
JT3500V | 2.0.1B1064  
JT3300V | 2.0.1B1047  
AM6200M | 2.0.0B3210  
AM6000N | 2.0.0B3042  
AM5000W | 2.0.0B3037  
AM4200M | 2.0.0B2996  
AM4100V | 2.0.0B2988  
AM3500MW | 2.0.0B1092  
AM3410V | 2.0.0B1085  
AM3300V | 2.0.0B1060  
AM3100E | 2.0.0B981  
AM3100V | 2.0.0B946  
AM3000M | 2.0.0B21  
KZ7621U | 2.0.0B14  
KZ3220M | 2.0.0B04  
KZ3120R | 2.0.0B01  
Summary: JT3500V is a most advanced LTE-A Pro CAT12 indoor Wi-Fi  
& VoIP CPE product specially designed to enable quick and easy  
LTE fixed data service deployment for residential and SOHO customers.  
It provides high speed LAN, Wi-Fi and VoIP integrated services  
to end users who need both bandwidth and multi-media data service  
in residential homes or enterprises. The device has 2 Gigabit LAN  
ports, 1 RJ11 analog phone port, high performance 4x4 MIMO and  
CA capabilities, 802.11b/g/n/ac dual band Wi-Fi, advanced routing  
and firewall software for security. It provides an effective  
all-in-one solution to SOHO or residential customers. It can  
deliver up to 1Gbps max data throughput which can be very  
competitive to wired broadband access service.  
Desc: The device allows unauthenticated attackers to restart the  
device with an HTTP GET request to /goform/RestartDevice page.  
Tested on: GoAhead-Webs/2.5.0 PeerSec-MatrixSSL/3.1.3-OPEN  
Linux 2.6.36+ (mips)  
Mediatek APSoC SDK v4.3.1.0  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
Advisory ID: ZSL-2021-5643  
Advisory URL:  
$ curl -sk