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Lack of multi-factor authentication

Description​

Critical services of the system, such as databases, shared resources containing sensitive information and web services, are not protected by a multi-factor authentication mechanism. This makes it easier for an attacker who has compromised a user's account to access those resources.

Impact​

Multi-factor authentication is flawed to the point where it can be bypassed entirely.

Recommendation​

Implement a double factor authentication by software or hardware to increase the protection level of the resources authentication.

Threat​

Authenticathed attacker from the Internet.

Expected Remediation Time​

⌚ 15 minutes.

Score​

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

Base​

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

Temporal​

  • Exploit code madurity: X
  • Remediation level: O
  • Report confidence: X

Result​

  • Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L/E:X/RL:O/RC:X
  • Score:
    • Base: 7.6
    • Temporal: 7.3
  • Severity:
    • Base: High
    • Temporal: High

Code Examples​

Compliant code​

All resources should be set up to allow multi-factor authentication

resource "aws_s3_bucket" "bucket" {
  bucket = "some_test_bucket"
  acl    = "private"
  versioning {
    enabled = true
    mfa_delete = true
  }
}

Non compliant code​

Some resources do not allow multi-factor authentication

resource "aws_s3_bucket" "bucket" {
  bucket = "some_test_bucket"
  acl    = "private"
  versioning {
    enabled = false
    mfa_delete = true
  }
}

Requirements​