Vulnerability Description
authentik is an open-source identity provider. Redirect URIs in the OAuth2 provider in authentik are checked by RegEx comparison. When no Redirect URIs are configured in a provider, authentik will automatically use the first redirect_uri value received as an allowed redirect URI, without escaping characters that have a special meaning in RegEx. Similarly, the documentation did not take this into consideration either. Given a provider with the Redirect URIs set to https://foo.example.com, an attacker can register a domain fooaexample.com, and it will correctly pass validation. authentik 2024.8.5 and 2024.10.3 fix this issue. As a workaround, When configuring OAuth2 providers, make sure to escape any wildcard characters that are not intended to function as a wildcard, for example replace `.` with `\.`.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Goauthentik | Authentik | < 2024.8.5 |
Related Weaknesses (CWE)
References
- https://github.com/goauthentik/authentik/commit/85bb638243c8d7ea42ddd3b15b3f51a9Patch
- https://github.com/goauthentik/authentik/security/advisories/GHSA-3q5w-6m3x-64gjVendor Advisory
- https://www.vicarius.io/vsociety/posts/cve-2024-52289-detect-authentik-vulnerabi
- https://www.vicarius.io/vsociety/posts/cve-2024-52289-mitigate-authentik-vulnera
FAQ
What is CVE-2024-52289?
CVE-2024-52289 is a vulnerability with a CVSS score of 9.8 (CRITICAL). authentik is an open-source identity provider. Redirect URIs in the OAuth2 provider in authentik are checked by RegEx comparison. When no Redirect URIs are configured in a provider, authentik will aut...
How severe is CVE-2024-52289?
CVE-2024-52289 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2024-52289?
Check the references section above for vendor advisories and patch information. Affected products include: Goauthentik Authentik.