CVE-2024-41952: Zitadel has an "Ignoring unknown usernames" vulnerability
Impact
ZITADEL administrators can enable a setting called "Ignoring unknown usernames" which helps mitigate attacks that try to guess/enumerate usernames. If enabled, ZITADEL will show the password prompt even if the user doesn't exist and report "Username or Password invalid". Due to a implementation change to prevent deadlocks calling the database, the flag would not be correctly respected in all cases and an attacker would gain information if an account exist within ZITADEL, since the error message shows "object not found" instead of the generic error message.
Patches
2.x versions are fixed on >= 2.58.1 2.57.x versions are fixed on >= 2.57.1 2.56.x versions are fixed on >= 2.56.2 2.55.x versions are fixed on >= 2.55.5 2.54.x versions are fixed on >= 2.54.8 2.53.x versions are fixed on >= 2.53.9
ZITADEL recommends upgrading to the latest versions available in due course.
Workarounds
There is no workaround since a patch is already available.
Questions
If you have any questions or comments about this advisory, please email us at security@zitadel.com
Other sources
Zitadel is an open source identity management system. ZITADEL administrators can enable a setting called "Ignoring unknown usernames" which helps mitigate attacks that try to guess/enumerate usernames. If enabled, ZITADEL will show the password prompt even if the user doesn't exist and report "Username or Password invalid". Due to a implementation change to prevent deadlocks calling the database, the flag would not be correctly respected in all cases and an attacker would gain information if an account exist within ZITADEL, since the error message shows "object not found" instead of the generic error message. This vulnerability is fixed in 2.58.1, 2.57.1, 2.56.2, 2.55.5, 2.54.8, and 2.53.9.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-41952?
CVE-2024-41952 has a moderate severity level due to its potential impact on user enumeration attacks.
How do I fix CVE-2024-41952?
To mitigate CVE-2024-41952, ensure that the setting for 'Ignoring unknown usernames' is enabled in the ZITADEL configuration.
What versions are affected by CVE-2024-41952?
CVE-2024-41952 affects ZITADEL versions prior to 2.58.1, including versions 2.57.1 and lower.
What is the purpose of the 'Ignoring unknown usernames' feature in relation to CVE-2024-41952?
The 'Ignoring unknown usernames' feature helps prevent attackers from guessing or enumerating valid usernames.
Are there any workarounds for CVE-2024-41952?
As a workaround for CVE-2024-41952, administrators can enable the 'Ignoring unknown usernames' option to enhance security.