The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.
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...
Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
If errors must be cap...
CVE-2002-2094This, and others, use ".." attacks and monitor error responses, so there is overlap with directory traversal.
CVE-2001-1483Enumeration of valid usernames based on inconsistent responses
CVE-2001-1528Account number enumeration via inconsistent responses.
CVE-2004-2150User enumeration via discrepancies in error messages.
CVE-2005-1650User enumeration via discrepancies in error messages.