44 lines
1.7 KiB
Markdown
44 lines
1.7 KiB
Markdown
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---
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stage: Secure
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group: Dynamic Analysis
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Generation of error message containing sensitive information
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## Description
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The application was found to return error data such as stack traces. Depending on the data contained within the error message,
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this information could be used by an attacker to conduct further attacks. While stack traces are helpful during development
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and debugging, they should not be presented to users when an error occurs.
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## Remediation
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Applications should handle exception conditions internally and map known failure types to error codes that can be displayed
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to a user. These error codes should be customized to the application and returned along with the relevant HTTP error code.
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When an error occurs, the application identifies the error type or class, and displays a numerical value to the
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user. Requests should also be tracked so when a user is presented with an error code, it has a corresponding request ID.
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Support teams can then correlate the HTTP error, the customized error code, and the request ID in the log files to
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determine the root cause of the error without leaking details to the end user.
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Example of returning customized errors:
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```plaintext
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HTTP/1.1 500 Internal Server Error
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...
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Error [0004] Occurred, please contact support or re-try your request again shortly.
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Request ID [a4bc91def12]
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...
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```
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## Details
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| ID | Aggregated | CWE | Type | Risk |
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|:---|:--------|:--------|:--------|:--------|
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| 209.1 | false | 209 | Passive | Low |
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## Links
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- [CWE](https://cwe.mitre.org/data/definitions/209.html)
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