ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.2.4 and all prior versions, the API endpoint `http://<Server-IP>/v1/users/login` in ZimaOS returns distinct responses based on whether a username exists or the password is incorrect. This behavior can be exploited for username enumeration, allowing attackers to determine whether a user exists in the system or not. Attackers can leverage this information in further attacks, such as credential stuffing or targeted password brute-forcing. As of time of publication, no known patched versions are available.

GitHub, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

GitHub, Inc. CWE-203

GitHub, Inc. https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-3f6g-8r88-3mx5 [No types assigned]

GitHub, Inc. https://youtu.be/BClx2u8DMfM [No types assigned]