Advisories for Maven/Org.apache.nifi.registry/Nifi-Registry-Web-Api package

The optional ShellUserGroupProvider in Apache NiFi 1.10.0 to 1.16.2 and Apache NiFi Registry 0.6.0 to 1.16.2 does not neutralize arguments for group resolution commands, allowing injection of operating system commands on Linux and macOS platforms. The ShellUserGroupProvider is not included in the default configuration. Command injection requires ShellUserGroupProvider to be one of the enabled User Group Providers in the Authorizers configuration. Command injection also requires an authenticated user with elevated …

If the NiFi Registry uses an authentication mechanism other than PKI, the NiFi Registry would invalidate the authentication token on the client side but not on the server side during user logout. This permits the user's client-side token to be used after logging out to make API requests to NiFi Registry potentially hours after the user clicked logout.