GHSA-c8fj-4pm8-mp2c Broken Authorization in ZITADEL Actions

• Go github.com/zitadel/zitadel: >= 2.0.0, < 2.2.0 → fixed in 2.2.0 • Go github.com/zitadel/zitadel: >= 1.42.0, < 1.87.1 → fixed in 1.87.1

Impact Actions, introduced in ZITADEL 1.42.0 on the API and 1.56.0 for 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]