HexBrain

Nextcloud · Report #855304

No set limit to try to login in "https://auth.nextcloud.com/auth/realms/master/protocol/openid-connect/auth" page.

Informativestatus
5upvotes
20 Apr 2021disclosed

How it was found

Hi. I checked the "https://nextcloud.com" page, and try to go to wp-admin page. Then, I found the login page "https://auth.nextcloud.com/auth/realms/master/protocol/openid-connect/auth" In this page, I tried to login more than 10 times!(manually) I think that I can try to brute force to this login page, because it's no limit to try to login. You should be better to set the limit to try to login.

Impact

an attacker can try to brute force attack to login the page until he can success to login.

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original