Proof of Concept

1. Go to http://127.0.0.1/admin/view:modules/load_module:users/action:profile
2. Click on edit profile
3. Fill the first name & last name field with huge characters, (more than 1 lakh)
4. Copy the below payload and put it in the input fields and click on continue.
5. You will see the application accepts large characters and if we will increase the characters then it can lead to Dos.

Download the payload from here:

https://drive.google.com/file/d/1-e-lPMJxO7zBhcZOGKipnqOj3C4ygDGA/view?usp=drivesdk

Video & Image POC:

https://drive.google.com/drive/folders/1-lM2kFjS9p2Pjb9S0Nw_SuqPhW5Zohja

Patch recemmondation:

The first name & last name input should be limited to 50 characters or max 100 characters.