CVE-2024-49757
Published: 25 October 2024
Summary
CVE-2024-49757 is a high-severity Improper Authentication (CWE-287) vulnerability in Zitadel Zitadel. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 6.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Zitadel is an open-source identity infrastructure platform that allows administrators to disable user self-registration. In versions prior to 2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, and 2.58.7, a missing security check caused the "User Registration allowed" setting to only suppress the registration button on the login page while leaving the underlying endpoint unprotected. The flaw is tracked as CVE-2024-49757 with a CVSS 3.1 score of 7.5 and is classified under CWE-287.
An unauthenticated remote attacker can directly request the registration URL /ui/login/loginname to create a new account even when self-registration has been explicitly disabled by an administrator. Successful exploitation grants the attacker a valid user identity within the Zitadel instance, potentially bypassing intended access-control policies without requiring any privileges or user interaction.
The referenced GitHub release notes for versions 2.58.7 through 2.64.0 state that the issue is resolved by adding the missing enforcement check on the registration endpoint; no workarounds are documented. The associated EPSS score has remained flat at 0.1077 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-2921
Vulnerability details
The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Due to a missing security check in versions prior to 2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, and 2.58.7, disabling the "User Registration allowed" option only hid the…
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registration button on the login page. Users could bypass this restriction by directly accessing the registration URL (/ui/login/loginname) and register a user that way. Versions 2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 contain a patch. No known workarounds are available.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Detects unauthorized successful logons resulting from improper authentication implementations.
Documented procedures ensure personnel are trained on authentication mechanisms, tangibly lowering the risk of improper authentication being exploited.
Security awareness training instructs users on secure authentication practices and avoiding credential compromise.
Training on authentication mechanisms and best practices decreases the occurrence of improper authentication.
Non-repudiation requires strong authentication mechanisms to irrefutably attribute performed actions to specific individuals or processes.
Session content review can reveal authentication bypasses or failures in session establishment.
Review of authentication-related audit records can detect improper authentication mechanisms or bypasses.
Assessments check authentication mechanisms for correct implementation and effectiveness, reducing successful authentication bypass attempts.