4e3fd305ab
# Which Problems Are Solved We noticed logging where 500: Internal Server errors were returned from the token endpoint, mostly for the `refresh_token` grant. The error was thrown by the database as it received non-UTF8 strings for token IDs Zitadel uses symmetric encryption for opaque tokens, including refresh tokens. Encrypted values are base64 encoded. It appeared to be possible to send garbage base64 to the token endpoint, which will pass decryption and string-splitting. In those cases the resulting ID is not a valid UTF-8 string. Invalid non-UTF8 strings are now rejected during token decryption. # How the Problems Are Solved - `AESCrypto.DecryptString()` checks if the decrypted bytes only contain valid UTF-8 characters before converting them into a string. - `AESCrypto.Decrypt()` is unmodified and still allows decryption on non-UTF8 byte strings. - `FromRefreshToken` now uses `DecryptString` instead of `Decrypt` # Additional Changes - Unit tests added for `FromRefreshToken` and `AESCrypto.DecryptString()`. - Fuzz tests added for `FromRefreshToken` and `AESCrypto.DecryptString()`. This was to pinpoint the problem - Testdata with values that resulted in invalid strings are committed. In the pipeline this results in the Fuzz tests to execute as regular unit-test cases. As we don't use the `-fuzz` flag in the pipeline no further fuzzing is performed. # Additional Context - Closes #7765 - https://go.dev/doc/tutorial/fuzz
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Are you searching for a user management tool that is quickly set up like Auth0 and open source like Keycloak?
Do you have a project that requires multi-tenant user management with self-service for your customers?
Look no further — ZITADEL is the identity infrastructure, simplified for you.
We provide you with a wide range of out-of-the-box features to accelerate your project, including:
✅ Multi-tenancy with team management
✅ Secure login
✅ Self-service
✅ OpenID Connect
✅ OAuth2.x
✅ SAML2
✅ LDAP
✅ Passkeys / FIDO2
✅ OTP
and an unlimited audit trail is there for you, ready to use.
With ZITADEL, you are assured of a robust and customizable turnkey solution for all your authentication and authorization needs.
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Deploying ZITADEL locally takes less than 3 minutes. Go ahead and give it a try!
See all guides here
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Setup ZITADEL Cloud (SaaS)
If you want to experience a hands-free ZITADEL, you should use ZITADEL Cloud.
ZITADEL Cloud comes with a free tier, providing you with all the same features as the open-source version. Learn more about the pay-as-you-go pricing.
Example applications
Clone one of our example applications or deploy them directly to Vercel.
SDKs
Use our SDKs for your favorite language and framework.
Why choose ZITADEL
We built ZITADEL with a complex multi-tenancy architecture in mind and provide the best solution to handle B2B customers and partners. Yet it offers everything you need for a customer identity (CIAM) use case.
- API-first approach
- Multi-tenancy authentication and access management
- Strong audit trail thanks to event sourcing as storage pattern
- Actions to react on events with custom code and extended ZITADEL for you needs
- Branding for a uniform user experience across multiple organizations
- Self-service for end-users, business customers, and administrators
- CockroachDB or a Postgres database as reliable and widespread storage option
Features
Authentication
- Single Sign On (SSO)
- Passkeys support (FIDO2 / WebAuthN)
- Username / Password
- Multifactor authentication with OTP, U2F, Email OTP, SMS OTP
- LDAP
- External enterprise identity providers and social logins
- Device authorization
- OpenID Connect certified => OIDC Endpoints
- SAML 2.0 => SAML Endpoints
- Custom sessions if you need to go beyond OIDC or SAML
- Machine-to-machine with JWT profile, Personal Access Tokens (PAT), and Client Credentials
- Token exchange and impersonation
Multi-Tenancy
- Identity Brokering with templates for popular identity providers
- Customizable onboaring for B2B and their users
- Delegate role management to third-parties
- Domain discovery
Integration
- GRPC and REST APIs for every functionality and resource
- Actions to call any API, send webhooks, adjust workflows, or customize tokens
- Role Based Access Control (RBAC)
- Examples and SDKs
- Audit Log and SOC/SIEM
- User registration and onboarding
- Hosted and custom login user interface
Self-Service
- Self-registration including verification
- Self-service for end-users, business customers, and administrators
- Administration UI (Console)
Deployment
- Postgres (version >= 14) or CockroachDB (version latest stable)
- Zero Downtime Updates
- High scalability
Track upcoming features on our roadmap.
How To Contribute
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Quick Start Guide
Secure a React Application using OpenID Connect Authorization Code with PKCE
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Admin Console
Use Console or our APIs to setup organizations, projects and applications.
Security
You can find our security policy here.
Technical Advisories are published regarding major issues with the ZITADEL platform that could potentially impact security or stability in production environments.
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See our license for detailed information governing permissions and limitations on use.