[OASIS Issue Tracker] (ODATA-627) Security: Returning 404 (Not Found) versus 401 (unauthorized) could leak information

Michael Pizzo created ODATA-627:
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             Summary: Security: Returning 404 (Not Found) versus 401 (unauthorized) could leak information
                 Key: ODATA-627
                 URL: https://tools.oasis-open.org/issues/browse/ODATA-627
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Task
          Components: Securing Open Data
    Affects Versions: V4.0_WD01
         Environment: [Proposed]
            Reporter: Michael Pizzo
             Fix For: V4.0_WD01


If an unauthorized attacker can query a particular user and receive a 404 if the user does not exist, there is a potential for information leakage. 

In general, security checks should always take place before any other processing, and 401 should be valid a valid response to any request.




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