CVE-2024-24766

CasaOS-UserService provides user management functionalities to CasaOS. Starting in version 0.4.4.3 and prior to version 0.4.7, the Casa OS Login page disclosed the username enumeration vulnerability in the login page. An attacker can enumerate the CasaOS username using the application response. If the username is incorrect application gives the error `**User does not exist**`. If the password is incorrect application gives the error `**Invalid password**`. Version 0.4.7 fixes this issue.

CasaOS-UserService provides user management functionalities to CasaOS. Starting in version 0.4.4.3 and prior to version 0.4.7, the Casa OS Login page disclosed the username enumeration vulnerability in the login page. An attacker can enumerate the CasaOS username using the application response. If the username is incorrect application gives the error `**User does not exist**`. If the password is incorrect application gives the error `**Invalid password**`. Version 0.4.7 fixes this issue.

CasaOS-UserService is vulnerable to a username enumeration issue, when an attacker can enumerate the CasaOS username using the application response. If the username is incorrect, the application gives the error 'User does not exist'. If the password is incorrect, the application gives the error 'Invalid password'.

### Summary The Casa OS Login page has disclosed the username enumeration vulnerability in the login page. ### Details It is observed that the attacker can enumerate the CasaOS username using the application response. If the username is incorrect application gives the error "**User does not exist**", If the password is incorrect application gives the error "**Invalid password**". ### PoC Capture the login request in a tool like Burp Suit and use the intruder tab for trying multiple usernames. Keep checking the response of each request if the response says **Invalid password** then the username is right. ### Impact Using this error attacker can enumerate the username of CasaOS. ### The logic behind the issue If the username is incorrect, then throw an error "User does not exist" else throw an error "Invalid password". This condition can be vice versa like: If the password is incorrect, then throw an error "Invalid password" else throw an error "User does not exist". ### Mitigation Since this is the condition we have to implement a single error which can be "Username/Password is Incorrect!!!"

CasaOS-UserService proporciona funcionalidades de gestión de usuarios a CasaOS. A partir de la versión 0.4.4.3 y antes de la versión 0.4.7, la página de inicio de sesión de Casa OS reveló la vulnerabilidad de enumeración de nombres de usuario en la página de inicio de sesión. Un atacante puede enumerar el nombre de usuario de CasaOS utilizando la respuesta de la aplicación. Si el nombre de usuario es incorrecto, la aplicación muestra el error `**El usuario no existe**`. Si la contraseña es incorrecta, la aplicación muestra el error `**Contraseña no válida**`. La versión 0.4.7 soluciona este problema.