Pivotal CredHub Service Broker, versions prior to 1.1.0, uses a guessable form of random number generation in creating service broker's UAA client. A remote malicious user may guess the client secret and obtain or modify credentials for users of the CredHub Service.
In Cloud Foundry Foundation Credhub-release version 1.1.0, access control lists (ACLs) enforce whether an authenticated user can perform an operation on a credential. For installations using ACLs, the ACL was bypassed for the CredHub interpolate endpoint, allowing authenticated applications to view any credential within the CredHub installation.