1.0 KiB
CVE-2024-47077
Reported by @quentinmit
Insufficient cross-provider token validation during introspection
Summary
Access tokens issued to one application can be stolen by that application and used to impersonate the user against any other proxy provider. Also, a user can steal an access token they were legitimately issued for one application and use it to access another application that they aren't allowed to access.
Details
The proxy provider uses /application/o/introspect/ to validate bearer tokens provided in the Authorization header:
The implementation of this endpoint separately validates the client_id and client_secret (which are that of the proxy provider) and the token without validating that they correspond to the same provider.
Patches
authentik 2024.6.5 and 2024.8.3 fix this issue.
For more information
If you have any questions or comments about this advisory:
- Email us at security@goauthentik.io