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User enumeration

Description​

The system provides different responses for existent and non-existent users, allowing an attacker to enumerate valid users via error messages, response times, frames count, among other techniques.

Impact​

Obtain valid application usernames.

Recommendation​

Set the same server response for existent and non-existent users.

Threat​

Anonymous attacker from the Internet.

Expected Remediation Time​

⌚ minutes.

Score​

Default score using CVSS 3.1. It may change depending on the context of the src.

Base​

  • Attack vector: N
  • Attack complexity: L
  • Privileges required: N
  • User interaction: N
  • Scope: U
  • Confidentiality: L
  • Integrity: N
  • Availability: N

Temporal​

  • Exploit code madurity: X
  • Remediation level: U
  • Report confidence: C

Result​

  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:U/RC:C
  • Score:
    • Base: 5.3
    • Temporal: 5.3
  • Severity:
    • Base: Medium
    • Temporal: Medium

Requirements​

Fixes​

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