Server-generated Error Message Containing Sensitive Information

Incomplete Variant
Structure: Simple
Description

Certain conditions, such as network failure, will cause a server error message to be displayed.

Extended Description

While error messages in and of themselves are not dangerous, per se, it is what an attacker can glean from them that might cause eventual problems.

Common Consequences 1
Scope: Confidentiality

Impact: Read Application Data

Potential Mitigations 1
Phase: Architecture and DesignSystem Configuration
Recommendations include designing and adding consistent error handling mechanisms which are capable of handling any user input to your web application, providing meaningful detail to end-users, and preventing error messages that might provide information useful to an attacker from being displayed.
Modes of Introduction
Implementation