HexBrain

Nextcloud · Report #949712

DoS attack against the client when entering a long password

Validstatus
lowseverity
2upvotes
14 Feb 2021disclosed

How it was found

Hi team,

My report like this #840598 entering a long password the denial a service attack on the server please fix it ..

#Step ..

  1. Create account on https://nextcloud.com/signup/
  2. enter password any password and login .
  3. after you login go to your settings .
  4. go to here https://nextcloud03.webo.cloud/settings/user/security .
  5. try to change password .

check your Current Password then the password Fields of new password try check long password payload below .

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the server will be freeze not working stopped page

Impact

it's possible to cause a denial a service attack on the server. This may lead to the website becoming unavailable or unresponsive.

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