A Broken Object Level Authorization (BOLA) vulnerability in Indico through 3.3.5 allows attackers to read information by sending a crafted POST request to the component /api/principals. NOTE: this is disputed by the Supplier because the product intentionally lets all users retrieve certain information about other user accounts (this functionality is, in the current design, not restricted to any privileged roles such as event organizer).
Weakness
The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.
Potential Mitigations
- Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
References