Broken Authorization in ZITADEL Actions

Impact

Actions, introduced in ZITADEL1.42.0on the API and1.56.0for Console, is a feature, where users with role ORG_OWNER are able to create Javascript Code, which is invoked by the system at certain points during the login.Actions, for example, allow creating authorizations (user grants) on newly created users programmatically.
Due to a missing authorization check, Actions were able to grant authorizations for projects that belong to other organisations inside the same Instance. Granting authorizations via API and Console is not affected by this vulnerability.

Patches

2.x versions are fixed on >= 2.2.0
1.x versions are fixed on >= 1.87.1

ZITADEL recommends upgrading to the latest versions available in due course.

Workarounds

There is no workaround since a patch is already available.

Who did disclose this

During our recurring white box penetration test our external security consultant found this issue.
The full report will be made public after the complete review.

References

https://docs.zitadel.com/docs/guides/manage/customize/behavior
https://docs.zitadel.com/docs/apis/actions
https://zitadel.com/blog/pentest-results-h1-2021

Questions

If you have any questions or comments about this advisory:

• Email us at [email protected]