Use of indistinguishable response time
Summary​
Response time of authentication probes should be indistinguishable whether an user exists or not.
Description​
This requirement aims to ensure that, regardless of the input or conditions, the response time of a system remains indistinguishable. By carefully measuring response times, an attacker may infer details about the internal operations of a system, and maybe exposing sensitive information.
Supported In​
This requirement is verified in following services
| Plan | Supported |
|---|---|
| Essential | 🔴 |
| Advanced | 🟢 |
References​
- CWEâ„¢-208. Observable timing discrepancy
- NIST 800-171-5_4. Employ replay-resistant authentication mechanisms
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